OBJECTIVES After studying Chapter 8, the reader should

OBJECTIVES After studying Chapter 8, the reader should

OBJECTIVES After studying Chapter 8, the reader should be able to: 1. Explain how electronic controls are used for transmission operation. 2. Identify the major automatic transmission electronic control components. 3. Describe the relationship between volts, amperes, and ohms. 4. Explain the circuit required for an electrical system to operate. 5. Describe the operation of an electronic transmission. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458

INTRODUCTION FIGURE 8-1 An electronic transmission has electronic sensors and actuators and is integrated electronically with other phases of vehicle operation. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 INTRODUCTION Current electronic automatic transmissions are able to provide diagnostic information as well as accurately control:

Shift timing and quality Mainline pressure Application and release of apply devices Apply-device pressures Clutch-apply fluid volume Application and release of the torque converter clutch Ignition timing during shifts Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood

2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 INTRODUCTION FIGURE 8-2 When the transmission control module (TCM) is ready to begin an upshift, it signals the power train control module (PCM) to reduce engine torque. This produces a smoother shift with less wear in the transmission. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 INTRODUCTION

FIGURE 8-3 The fuzzy logic part of the TMC receives input signals, compares what the driver is doing with the throttle and what the vehicle is doing with normal operation, and adapts shift timing. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 INTRODUCTION FIGURE 8-4 This electronic transmission valve body includes four solenoids. Automatic Transmissions and Transaxles, Fourth Edition

By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRICITY The three measurable aspects of electricity that concern an automotive technician are: Current flow (amperage), Electrical pressure (voltage) Resistance to current flow (ohms). Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458

BASIC ELECTRICITY FIGURE 8-5 If we compare electricity with hydraulics, voltage and pressure (a), current flow and fluid flow (b), and a resistor and orifice (c) are very similar. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRICITY FIGURE 8-5 (CONTINUED) If we compare electricity with hydraulics, voltage and pressure (a), current flow and fluid flow (b), and a resistor and orifice (c) are very similar.

Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRICITY FIGURE 8-6 Insulated wires conduct electricity to the lights. The body metal forms the ground circuit to complete the circuit back to the battery. This is shown in a diagram (a) and a schematic (b). Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458

BASIC ELECTRICITY FIGURE 8-7 A series circuit (a) and a parallel circuit (b). Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRICITY FIGURE 8-8 Wiring schematics use symbols to show the various components. (Courtesy of Chrysler Corporation)

Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRICITY System Components Power Source Circuit Protection Switches

Wiring Electrical Loads Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRICITY FIGURE 8-9 This wiring diagram of a transmission with electronic controls for fourth gear (O/D) shows the power source (battery), three fuses for protection, a control switch and two ECUs (electronic control units), two output devices (the O/D solenoid and indicator light), and the wires that connect them.

Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRICITY FIGURE 8-10 Circuit protection can be fuses with tubular or flat-blade connections (a), a circuit breaker (b and c),or a fusible link (d). (Courtesy of Chrysler Corporation) Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458

BASIC ELECTRICITY FIGURE 8-11 This stop light switch is a normally open switch. When the brake pedal is depressed, battery voltage is sent to the ECT ECU. (Courtesy of Toyota Motor Sales USA, Inc.) Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRICITY FIGURE 8-12 A de-energized relay. Relays use a magnetic coil to either close or

open switch contacts. Note that terminals 85 and 86 are for control, terminals 30 to 87 are normally open, and terminals 30 to 87A are normally closed. (Courtesy of Chrysler Corporation) Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRICITY FIGURE 8-13 Electrical wire is sized by gauge sizes or cross section in millimeters; three American wire gauge (AWG) sizes are shown for comparison (a). Wire colors with tracers are used to identify particular wires (b). (b is courtesy of Chrysler Corporation) Automatic Transmissions and Transaxles, Fourth Edition

By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRICITY FIGURE 8-14 Transmission solenoids can take different shapes, but they all include an electromagnet and a valve. The style shown in (b) is the most common. (a is courtesy of Chrysler Corporation; b is courtesy of Toyota Motor Sales USA, Inc.) Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458

BASIC ELECTRICITY FIGURE 8-15 A clamping diode is wired parallel to the coil winding (a). It blocks current flow when the switch is closed, but it allows induced current to dissipate when the switch opens (b). Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS Solid-state electronics is the basis of automotive computers and control modules. These devices are constructed from diodes, transistors, capacitors, resistors, integrated circuits, and microchips.

Solid-state devices, for all practical purposes, do not wear out because there are no moving parts. A major difference between electrical and electronic circuits is the quantity of electrical flow. The current flow in electronic circuits is very small, thus the voltage requirement is low and circuit resistance must be kept to a minimum. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-16 This PCM receives sensor input (at left) and controls

actuators (outputs) inside the transmissions Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS Sensors The various sensor types (organized by the type of electrical signal) are as follows: Frequency generators (creates an ac signal with a frequency relative to speed) Voltage generator (creates a voltage signal that is relative to speed) Potentiometer or variable resistor (alters the voltage or resistance) Switches (an onoff signal)

Serial data (an onoff signal coming from another control module) Thermistor (changes resistance relative to temperature) Transducer (changes resistance relative to pressure) Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-17 This transmission uses an input (left) and output (right) speed sensor. The sensors generate a signal frequency that is relative to the speeds of the reluctor rings. (Courtesy of Toyota Motor Sales USA, Inc.) Automatic Transmissions and Transaxles, Fourth Edition

By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-18 The speed sensor switch will close as the magnet moves past it (a).It will generate a square wave/onoff signal (b). Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS

FIGURE 8-19 The reluctor tooth will pull the magnetic field across the coil windings as it moves past (a). It will generate a sine wave/AC signal (b). Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-20 An input speed sensor along with an output speed sensor allows the TCM to calculate the gear ratio and determine how long it takes to complete a shift or if there is internal slippage in the gear train. (Courtesy of Chrysler Corporation) Automatic Transmissions and Transaxles, Fourth Edition

By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-21 ATPS (throttle position sensor) is mounted at the throttle body. It provides an electronic signal of the throttle operation to the ECM. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS

FIGURE 8-22 The ECT (engine coolant temperature) sensor is mounted close to the engines thermostat (a). It is a thermistor (b) that provides a coolant temperature signal to the ECM (c and d). Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-23 A transmission fluid temperature sensor can be checked by connecting an ohmmeter to the harness connector terminals (a). The resistance should change as the temperature changes (b).

Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-24 This hydraulic circuit shows three fluid pressure switches that signal the TCM when there is pressure in their circuits. (Courtesy of Chrysler Corporation) Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458

BASIC ELECTRONICS FIGURE 8-25 Some systems include an AD (analogdigital) buffer to convert the ac analog speed sensor signal so it can be read by the ECM. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-26 This MLP (manual lever position) sensor/neutral start switch is mounted at the transmission. It provides a shift lever position signal to the ECM. Automatic Transmissions and Transaxles, Fourth Edition

By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-27 The stop light switch is mounted at the brake pedal. It provides a brake-apply signal to the TCM. (Courtesy of Toyota Motor Sales USA, Inc.) Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458

BASIC ELECTRONICS Electronic Transmission Shift Controls Serial Data OBD-II Controller Area Network Transmission-Based Control Module Actuators Shift Solenoids Shift Solenoid Operation Pressure Control Solenoids CVT Electronic Controls Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood

2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-28 Power supply for the electrical circuits of a modern vehicle begins at the power distribution center. It usually includes major relays and the fuses. (Courtesy of Chrysler Corporation) Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS

FIGURE 8-29 Solenoid control occurs when the ECM completes the circuit to ground (top) or switches on B+ (bottom). The ground connection is also B-. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-30 This electrical schematic shows the various inputs and outputs of the transmission control module for a 42LE transaxle. (Courtesy of Chrysler Corporation)

Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-31 The scan tool is being plugged into the diagnostic connector (arrow) under the instrument panel. It can read any DTCs, sensor outputs, and operate the solenoids inside the transmission. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood

2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-32 A weathertight connector is used at this pressure switch (a). Opening the latch allows the connector to be removed (b). Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS

FIGURE 8-33 One of the solenoids is wired directly to this internal electrical harness. Note the case connecter near the bottom. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-34 The CCD (Chrysler Collision Detection) bus allows the BCM (body control module) and PCM (power-train control module) to share information such as the signal from the transaxle output speed sensor. Among other things, this

signal is used for the speedometer. (Courtesy of Chrysler Corporation) Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-35 This control solenoid assembly (a) contains four transmission fluid pressure (TFP) switches, a line pressure control (PC) solenoid, four pressure control (PC) solenoids, two shift solenoids (SS), a torque converter clutch (TCC) solenoid, a transmission fluid temperature (TFT) sensor, and the transmission control module (TCM). It also has a vehicle harness connector and connectors to the shift position switch and the input and output speed sensors. A simplified view is also shown (b).

Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-36 This solenoid is on. Magnetic force has pulled the plunger to the right. Fluid pressure has moved the metering ball off its seat, and fluid is passing through the valve. (Courtesy of Toyota Motor Sales USA, Inc.) Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458

BASIC ELECTRONICS FIGURE 8-37 The tapered stems are connected to the shift solenoids. When the solenoids are on, they move downward to move the check balls off their seats and also close the vent. (Courtesy of Chrysler Corporation) Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-38 The No. 1 solenoid is on. Fluid pressure is exhausted at the drain, and the 23 shift valve is upshifted. The No.2 solenoid is off, so fluid

pressure has the 12 shift valve in downshift position. (Courtesy of Toyota Motor Sales USA, Inc.) Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-39 The hydraulic diagram of a Toyota A240E transaxle in second gear. Both the No.1 and No.2 solenoids are turned on. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc.

Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-40 The valve body for a 41TE transaxle. Note that there are no shift valves. (Courtesy of Chrysler Corporation) Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-41 The hydraulic diagram of a 41TE transaxle in first gear. The shift to second occurs when the 24/LR solenoid is turned on to allow pressure to flow to

the 24 clutch. (Courtesy of Chrysler Corporation) Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-42 The solenoids and pressure switches of this Chrysler transaxle are mounted under the solenoid sound shield on the outside of the transaxle. (Courtesy of Chrysler Corporation) Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc.

Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-43 Line pressure increases as the duty cycle of the EPC solenoid increases. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-44 This block diagram shows the relationship between the TCM, electrical actuators, valve body, and hydraulic actuators for a

CVT transmission. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 BASIC ELECTRONICS FIGURE 8-45 The stepper motor and pulley ratio link with the CVT in low ratio (A). The stepper motor has extended (B), moving the ratio link and ratio control valve; this should cause the primary pulley to become narrower to produce a higher ratio. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood

2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 SUMMARY 1. Electronic controls are used for more accurate automatic operation of the transmission. 2. A basic understanding of electricity and electronic devices is essential to understanding and repairing electronically controlled transmissions. 3. Electronic controls use sensors to monitor various operational inputs that will be used to control the operation of the transmission. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc.

Pearson Prentice Hall - Upper Saddle River, NJ 07458 SUMMARY 4. The hydraulic operation of the transmission is controlled by solenoids that are switched to redirect pressurized fluid to move shift valves or change the operational pressures. 5. The TCM receives the signals from the sensors and operates the solenoids to produce upshifts and downshifts at the proper speed. 6. CVT transmissions use the same type of logic for transmission control as conventional electronic transmissions. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood

2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 REVIEW QUESTIONS 1. Electronic control of the automatic transmission provides for accurate control of shift _____ and _____. 2. Electronic transmissions replace the governor with a _____ _____ _____ and the throttle valve with a _____ _____ _____. 4. A complete electrical circuit has a _____ source, circuit _____, _____, conductors, and an electrical _____. 5. Three types of electrical protection devices are _____, _____, and _____. 6. When the circuit is _____, current will stop flowing. 7. A _____ controls a switch by electromagnetism. 8. A _____ controls fluid flow by electromagnetism. Automatic Transmissions and Transaxles, Fourth Edition

By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 REVIEW QUESTIONS 4. The three major parts that an electronic control system can be divided into are _____, _____, and _____. 5. Identify the six inputs that an electronically controlled transmission might use for each of these. a. b. c. d. e.

f. Vehicle _____ Input shaft _____ Engine coolant _____ Engine _____ Driver _____ Transmission _____ temperature Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 REVIEW QUESTIONS 11. A thermistor is a _____ resistor that changes resistance relative to

_____. 12. Identify each of the following abbreviations. a. b. c. d. e. f. g. h. i. j. k. l. m. n.

BOO PRNDL ECT MAP MAF MLP PNP TOT TSS TPS VSS TCC ECM PCM 13. Good ground connections are essential for proper operation of _____ circuits.

Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 REVIEW QUESTIONS 14. A diagnostic _____ code (DTC) will set if an electrical problem is identified by the electronic control unit (ECU). DTCs can be read with a _____ tool. 15. Six actuators that are computer controlled are _____, _____, _____, _____, serial data, and _____. 16. Shift solenoids are controlled by the ECU to control the fluid pressure in the _____ valve circuits. 17. If both shift solenoids on a typical Toyota transmission are inoperative, what gear will the transmission be in? 18. If the shift solenoids fail in a Chrysler 41TE transmission,

what gear will the transmission be in? 19. EPC solenoids use _____ _____ to cycle a circuit on and off. 20. Ramping a torque converter clutch (TCC) solenoid produces a _____ lockup clutch apply. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 1. Student A says that it is important to have an understanding of electricity to understand an automatic transmission. Student B says that in most electronically controlled transmissions, the shift valves are controlled by solenoids. Who is

correct? a) b) c) d) Student A Student B Both A and B Neither A nor B Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458

CHAPTER QUIZ 1. Student A says that it is important to have an understanding of electricity to understand an automatic transmission. Student B says that in most electronically controlled transmissions, the shift valves are controlled by solenoids. Who is correct? a) b) c) d) Student A Student B Both A and B Neither A nor B

Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 2. Electrical pressure is measured in a) b) c) d) amperes. ohms. volts. watts.

Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 2. Electrical pressure is measured in a) b) c) d) amperes. ohms. volts.

watts. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 3. The current flowing through a circuit is measured in a) b) c) d) amperes.

ohms. volts. watts. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 3. The current flowing through a circuit is measured in a) b) c) d)

amperes. ohms. volts. watts. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 4. The resistance to electrical flow through a component is measured in a) b)

c) d) amperes. ohms. volts. watts. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 4. The resistance to electrical flow through a component is measured in

a) b) c) d) amperes. ohms. volts. watts. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ

5. The controlling unit for an electronically shifted transmission is the a) b) c) d) vehicle speed sensor. TCM. throttle position sensor. None of these Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458

CHAPTER QUIZ 5. The controlling unit for an electronically shifted transmission is the a) b) c) d) vehicle speed sensor. TCM. throttle position sensor. None of these Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood

2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 6. A _____ is an electromagnetic device that can be used to control fluid pressure in a hydraulic circuit. a) b) c) d) neutral start switch TCM Solenoid vehicle speed sensor Automatic Transmissions and Transaxles, Fourth Edition

By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 6. A _____ is an electromagnetic device that can be used to control fluid pressure in a hydraulic circuit. a) b) c) d) neutral start switch TCM Solenoid vehicle speed sensor

Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 7. A normally vented solenoid _____ allow fluid to flow to the sump when it is not energized. a) b) c) d) Will will, but at a reduced flow,

will not Any of these Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 7. A normally vented solenoid _____ allow fluid to flow to the sump when it is not energized. a) b) c) d)

Will will, but at a reduced flow, will not Any of these Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 8. Student A says that a transmission with electronic shift controls uses a throttle position sensor in place of a throttle valve. Student B says that a vehicle speed sensor is used in place of a governor. Who is correct?

a) b) c) d) Student A Student B Both A and B Neither A nor B Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ

8. Student A says that a transmission with electronic shift controls uses a throttle position sensor in place of a throttle valve. Student B says that a vehicle speed sensor is used in place of a governor. Who is correct? a) b) c) d) Student A Student B Both A and B Neither A nor B Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood

2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 9. If the solenoids fail in a transmission with electronic shift controls, the transmission will a) b) c) d) be ruined if the car is driven. not have any forward gears. operate in reverse only. operate in only one gear.

Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 9. If the solenoids fail in a transmission with electronic shift controls, the transmission will a) b) c) d) be ruined if the car is driven. not have any forward gears. operate in reverse only.

operate in only one gear. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 10. Student A says that the neutral start switch in a transmission with electronic shift controls is the same as the ones in all other transmissions. Student B says that the neutral start switch in a transmission with electronic shift controls is operated by the manual shift linkage. Who is correct? a)

b) c) d) Student A Student B Both A and B Neither A nor B Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 10. Student A says that the neutral start switch in a transmission with electronic shift controls is the

same as the ones in all other transmissions. Student B says that the neutral start switch in a transmission with electronic shift controls is operated by the manual shift linkage. Who is correct? a) b) c) d) Student A Student B Both A and B Neither A nor B Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood

2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 11. Student A says that if a transmission uses a comfort power switch, the switch will raise the shift points when it is in the power position. Student B says that if a transmission uses a comfort power switch, it will produce firmer shifts when it is in the comfort position. Who is correct? a) b) c) d) Student A Student B

Both A and B Neither A nor B Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 11. Student A says that if a transmission uses a comfort power switch, the switch will raise the shift points when it is in the power position. Student B says that if a transmission uses a comfort power switch, it will produce firmer shifts when it is in the comfort position. Who is correct? a)

b) c) d) Student A Student B Both A and B Neither A nor B Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 12. The TCC should not apply if the

a) brakes are applied. b) engine coolant sensor senses a cold engine. Which is correct? a) b) c) d) A B Both A and B Neither A nor B Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood

2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 12. The TCC should not apply if the a) brakes are applied. b) engine coolant sensor senses a cold engine. Which is correct? a) b) c) d) A B Both A and B

Neither A nor B Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 13. An electrical circuit must have which of the following to operate? a) b) c) d) Power source, conductors, load

Circuit protection, conductor, load Power source, switch, load Conductor, load, ground Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 13. An electrical circuit must have which of the following to operate? a) b) c) d)

Power source, conductors, load Circuit protection, conductor, load Power source, switch, load Conductor, load, ground Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 14. Student A says that diagnostic trouble codes can be read from a light on the dash. Student B says that the diagnostic trouble codes will pinpoint the problem. Who is correct?

a) b) c) d) Student A Student B Both A and B Neither A nor B Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ

14. Student A says that diagnostic trouble codes can be read from a light on the dash. Student B says that the diagnostic trouble codes will pinpoint the problem. Who is correct? a) b) c) d) Student A Student B Both A and B Neither A nor B Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood

2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 15. The vehicle speed sensor is driven by the a) b) c) d) front wheel. speedometer. transmission output shaft. drive shaft. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood

2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 15. The vehicle speed sensor is driven by the a) b) c) d) front wheel. speedometer. transmission output shaft. drive shaft. Automatic Transmissions and Transaxles, Fourth Edition

By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 16. The throttle position sensor is located on the a) b) c) d) throttle cable. throttle body. gas pedal. transmission case.

Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 16. The throttle position sensor is located on the a) b) c) d) throttle cable. throttle body. gas pedal. transmission case.

Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 17. The throttle position sensor is typically a a) b) c) d) thermistor. rheostat. potentiometer.

switch. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 17. The throttle position sensor is typically a a) b) c) d) thermistor. rheostat.

potentiometer. switch. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 18. A pulse-width modulated solenoid can be used to a) b) c) d) modulate the engine pulses.

smooth the application of the clutches. signal the computer of a problem. give the technician information about a problem. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 18. A pulse-width modulated solenoid can be used to a) b) c) d)

modulate the engine pulses. smooth the application of the clutches. signal the computer of a problem. give the technician information about a problem. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 19. If a conductor has infinite resistance it is a) b) c) d)

corroded. open. closed. grounded. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 19. If a conductor has infinite resistance it is a) b) c)

d) corroded. open. closed. grounded. Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 20. A _____ is used to prevent high-voltage spikes from a collapsing electromagnetic field. a)

b) c) d) Transistor Relay Diode potentiometer Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458 CHAPTER QUIZ 20. A _____ is used to prevent high-voltage spikes

from a collapsing electromagnetic field. a) b) c) d) Transistor Relay Diode potentiometer Automatic Transmissions and Transaxles, Fourth Edition By Tom Birch and Chuck Rockwood 2010 Pearson Higher Education, Inc. Pearson Prentice Hall - Upper Saddle River, NJ 07458

Recently Viewed Presentations

  • Geometry Chapter 3

    Geometry Chapter 3

    Postulate 15 - Corresponding Angles Postulate:If two parallel lines are cut by a transversal, then the pairs of corresponding angles are congruent. 1. 5. ... Linear Pair Postulate. Proving Theorem 3-3. 5. ?<5+?<6=180° ...
  • Four Basic Principles

    Four Basic Principles

    Proximity Examples Notice what happens when you visually connect the text. Conclusion Show me your CRAP! Contrast Repetition Alignment Proximity Four Basic Principles How to look good on paper in four easy steps Contrast The idea behind contrast is to...
  • AF Epidemiology, RFs, Rx, Future Directions

    AF Epidemiology, RFs, Rx, Future Directions

    How important are the Specific Aims? Why are the Specific Aims Important? Specific Aims Chapter 7 - Grant Application Writer's Workbook Outline Grant - Paragraph 1 Specific Aims Outline Grant - Paragraph 2 Specific Aims Outline Grant - Paragraph 3...
  • Ancient Greece

    Ancient Greece

    Paid government officials - poor men could now serve in the government Strengthen the Empire - money from the Delian League (alliance of Greek city-states led by Athens) to build up Athens' navy Greece's Golden Age - Pericles' Goals Glorify...
  • IREAD-3 - Lake Station Community Schools

    IREAD-3 - Lake Station Community Schools

    who do not pass IREAD-3 in the spring have an opportunity to retest in the summer. Students who do not pass the spring or summer administrations of IREAD-3 will continue to receive instruction in Grade 3 Reading, will be officially...
  • NAEPP Coordinating Committee

    NAEPP Coordinating Committee

    The plan should include information about prescribed daily and quick-relief medicines and how they should be used, guidelines for handling asthma episodes including information about peak flow monitoring, emergency contact information for parents/guardians, and a list of things that make...
  • Analisis Pengaruh Kejelasan Jenjang Karir, Gaji, Fasilitas ...

    Analisis Pengaruh Kejelasan Jenjang Karir, Gaji, Fasilitas ...

    DR.IR DIAR FACHMI R CHAIDAR.,MT,CISCP * 1911 Frederick W. Taylor publishes The Principle of Scientific Management, giving birth to such techniques as time and motion studies. 1931 Walter A. Shewart of Bell Laboratories introduces statistical quality control in his book...
  • Windows 8: The Basics Mouse/Keyboard Learn about the

    Windows 8: The Basics Mouse/Keyboard Learn about the

    Sports, update in real time so you can see the latest information in one place. Windows 8 offers the . ... view the list that appears to the left or type in the search box in the top right corner....