TOYOTA RAV4 1996 Service Repair Manual

2. Turn cruise control main switch off. Connect a jumper wire between terminals E1 and Tc at DLC No. 1.
See Fig. 2
. If any DTCs are present, perform appropriate DTC test under DIAGNOSTIC TESTS . See
DIAGNOSTIC TROUBLE CODE DEFINITIONS
table.
3. If no codes are present and CRUISE indicator light begins flashing on and off every .25 second, system is
operating normally at this time. If no codes are present and cruise control system fault still exists, perform
CRUISE CONTROL FUNCTION TEST
under TROUBLE SHOOTING.
DIAGNOSTIC TROUBLE CODE DEFINITIONS
CLEARING CODES
1. To clear codes from cruise control ECU memory, locate DLC No. 1 in right side of engine compartment,
near shock tower. Connect a jumper wire between terminals E1 and Tc at DLC No. 1. See Fig. 2
. Road
test vehicle at 9 MPH or less. Holding cruise control switch in CANCEL position, depress cruise control
ON-OFF (main) switch to ON position 5 times within 3 seconds.
2. Fault codes are now erased from cruise control ECU memory. If problem has not been corrected or fault
is still present, code will reset in cruise control ECU memory.
DIAGNOSTIC TESTS
DTC 11 OR DTC 15: ACTUATOR MOTOR CIRCUIT
1. Ensure actuator control plate is NOT in full
y opened (counterclockwise) position or fully closed
DTCCircuit Affected/Probable Cause
11 Actuator Motor Circuit, Actuator Motor Or Cruise Control ECU
12 Actuator Magnetic Clutch, STOP Fuse, Stoplight Switch, Wiring Harness Or
Cruise Control ECU
14 Actuator Motor Or Cruise Control ECU
15 Actuator Motor Circuit, Actuator Motor Or Cruise Control ECU
21 Instrument Cluster, Wiring Harness, VSS Or Cruise Control ECU
23 VSS Or Cruise Control ECU
41 (1) Cruise Control ECU
42 (1) Power Source
43 (1) Cruise Control ECU Or Wiring Harness
(1)Perform CRUISE CONTROL ECU POWER SOURCE CIRCUIT test.
CAUTION: DO NOT disconnect vehicle battery to clear codes.
NOTE: To identify cruise control ECU connector terminals, see Fig. 6
. To help identify
all other cruise control related connector terminals and wire colors, see WIRING
DIAGRAMS .

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1999 ACCESSORIES & EQUIPMENT Cruise Control Systems - RAV4
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(clockwise) position before disconnecting actuator connector. See Fig. 4. Disconnect Black 4-pin
actuator connector. See Fig. 1
.
2. Measure resistance between actuator terminals No. 1 (Red/Green wire) and No. 2 (Red/Black wire). If
resistance is greater than 4.2 ohms, go to next step. If resistance is 4.2 ohms or less, replace cruise control
actuator and retest system.
3. Check wiring harness and connectors between actuator motor and cruise control ECU. Repair as
necessary. If wiring harness and connectors are okay, replace cruise control ECU and retest system.
DTC 12: ACTUATOR MAGNETIC CLUTCH CIRCUIT
1. Turn ignition switch to OFF position. Remove and inspect STOP fuse from instrument panel junction
block. See Fig. 1
. If fuse is okay, reinstall fuse and go to next step. If fuse is blown, replace fuse and
retest system.
2. Disconnect 4-pin stoplight switch connector. See Fig. 1
. Depress brake pedal (stoplight switch pin free).
Ensure continuity exists between stoplight switch connector terminals No. 1 (Green/White wire) and No.
2 (Red/White wire). If continuity does not exist, replace stoplight switch and retest system. If continuity
exists, go to next step.
3. Release brake pedal (stoplight switch pin pushed in). Ensure continuity exists between stoplight switch
connector terminals No. 3 (Green/Black wire) and No. 4 (Red/Yellow wire). If continuity does not exist,
replace stoplight switch and retest system. If continuity exists, go to next step.
4. Ensure ignition switch is in OFF position. Disconnect Black 4-pin actuator connector. See Fig. 1
.
Measure resistance between actuator terminals No. 3 (Red/Yellow wire) and No. 4 (White/Black wire). If
resistance is 34.65-42.35 ohms, go to next step. If resistance is not 34.65-42.35 ohms, replace cruise
control actuator and retest system.
5. Check wiring harness and connectors between cruise control ECU and stoplight switch, stoplight switch
and magnetic clutch, and magnetic clutch and ground. Repair as necessary. If wiring harness and
connectors are okay, replace cruise control ECU and retest system.
DTC 14: ACTUATOR MECHANICAL FAULT
1. Turn ignition switch to OFF position. Disconnect Black 4-pin actuator connector. See Fig. 1
. Connect a
jumper wire between positive battery terminal and actuator terminal No. 3 (Red/Yellow wire). Connect
another jumper wire between negative battery terminal and actuator terminal No. 4 (White/Black wire).
Attempt to move actuator control plate by hand. If control plate does not move, disconnect jumper wires
and go to next step. If control plate moves, replace cruise control actuator and retest system.
2. Connect a jumper wire between positive battery terminal and actuator terminals No. 1 (Red/Green wire)
and No. 3 (Red/Yellow wire). Connect another jumper wire between negative battery terminal and
actuator terminals No. 2 (Red/Black wire) and No. 4 (White/Black wire). Actuator control plate should
rotate to full open (counterclockwise) position. See STEP 1 in Fig. 4
. Reverse positive and negative
jumper wires at actuator terminals. Actuator control plate should rotate to full closed (clockwise) position.
See STEP 2 in Fig. 4
. If actuator control plate operates as specified, go to next step. If actuator control NOTE: Magnetic clutch and motor circuits include a diode. If circuit shows no
continuity or incorrect resistance, reverse positive and negative test leads and
retest circuit.

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1999 ACCESSORIES & EQUIPMENT Cruise Control Systems - RAV4
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plate does not operate as specified, replace cruise control actuator and retest system.
3. Check wiring harness and connector between cruise control ECU and cruise control actuator. Repair as
necessary. If wiring harness and connectors are okay, replace cruise control ECU and retest system.
Fig. 4: Checking Cruise Control Actuator Operation

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
DTC 21: VEHICLE SPEED SENSOR CIRCUIT

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1999 ACCESSORIES & EQUIPMENT Cruise Control Systems - RAV4
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1. Perform VEHICLE SPEED SENSOR test under CRUISE CONTROL FUNCTION TEST under
TROUBLE SHOOTING. If speed sensor input signals are not as specified, go to next step. If speed
sensor input signals are as specified, replace cruise control ECU and retest system.
2. Check speedometer circuit. See appropriate INSTRUMENT PANELS article. If speedometer circuit is
okay, go to next step. If speedometer circuit is not okay, repair wiring harness, connector or instrument
cluster as necessary. Retest system.
3. Check wiring harness and connectors between cruise control ECU, vehicle speed sensor and instrument
cluster. Repair as necessary and retest system. If wiring harness and connectors are okay, go to next step.
4. Remove vehicle speed sensor from transaxle. See Fig. 1
. Using jumper wires, connect positive battery
terminal to vehicle speed sensor terminal No. 1 (Red/Blue wire) and negative battery terminal to terminal
No. 2 (Blue/Black wire). Connect voltmeter positive lead to terminal No. 3 (Red/Yellow wire) and
negative lead to terminal No. 2 (Blue/Black wire). See Fig. 5
. Rotate vehicle speed sensor shaft and
ensure voltage changes from 0-11 volts or more 4 times per shaft revolution. Replace vehicle speed
sensor as necessary. If vehicle speed sensor is okay, replace cruise control ECU and retest system.
Fig. 5: Testing Vehicle Speed Sensor

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
DTC 23: VEHICLE SPEED SENSOR SIGNAL FAULT
Check vehicle speed sensor. See COMPONENT TESTS
. Replace vehicle speed sensor as necessary. If

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1999 ACCESSORIES & EQUIPMENT Cruise Control Systems - RAV4
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vehicle speed sensor is okay, replace cruise control ECU and retest system.
PIN VOLTAGE TESTS
Cruise control ECU pin testing chart is used for diagnosing intermittent symptoms and faults that are unable to
be resolved during self-diagnostics. Pin test ensures cruise control ECU is receiving and transmitting proper
voltage signals. To perform pin voltage test, remove cruise control ECU with connector attached. See Fig. 1
.
Test cruise control ECU voltages by backprobing ECU connector using a DVOM with ignition switch in ON
position, unless otherwise specified. If voltage readings are as specified, cruise control ECU may be faulty. See
Fig. 6
.

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Fig. 6: Cruise Control ECU Voltage Testing
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
WIRING DIAGRAMS

1999 Toyota RAV4
1999 ACCESSORIES & EQUIPMENT Cruise Control Systems - RAV4
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1999 Toyota RAV4
1999 ACCESSORIES & EQUIPMENT Cruise Control Systems - RAV4
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Fig. 7: Cruise Control System Wiring Diagram (RAV4)

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1999 ACCESSORIES & EQUIPMENT Cruise Control Systems - RAV4
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1999-2000 ACCESSORIES & EQUIPMENT
Rear Window & Mirror Defoggers
DESCRIPTION & OPERATION
Rear window defogger systems use a heating wire grid bonded to the inside of window. Electrical power to
heating grid is supplied by defogger relay, which is controlled by defogger switch. Some switches have an
integrated timer, which turns system off after 12-18 minutes of operation. Some models are equipped with
outside rearview mirror defoggers.
ON-VEHICLE SERVICE
GRID FILAMENT REPAIR
Clean broken wire tips thoroughly. Place masking tape along both sides of broken wire. See Fig. 1
. Apply
Repair Paste (DuPont 4817) to broken section of grid. Remove masking tape after paste has dried. Wait 24
hours before using defogger.
Fig. 1: Repairing Rear Defogger Grid Filament

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
TROUBLE SHOOTING
DEFOGGER DOES NOT WORK NOTE: This article also applies to Lexus LX470, refer to Land Cruiser, unless otherwise
indicated.

1999 Toyota RAV4
1999-2000 ACCESSORIES & EQUIPMENT Rear Window & Mirror Defoggers

1999 Toyota RAV4
1999-2000 ACCESSORIES & EQUIPMENT Rear Window & Mirror Defoggers
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Blown fuse or poor contact. Defogger switch defective. Poor connections. Broken wire. Relay defective.
INDICATOR LIGHT DOES NOT WORK
Bulb burned out. Open wire or poor connection.
REAR WINDOW DEFOGGER SYSTEM CHECK
1. Ensure all in-line fuses or circuit breakers are okay. Turn ignition and control switches to ON position.
Glass should feel warm after a few minutes.
2. If glass is not warm, use a test light or voltmeter to check for battery voltage at grid feed wire. If voltage
is not correct, check wiring harness, control switch and timer/relay.
SYSTEM TESTS
DEFOGGER SWITCH CIRCUIT
2000 Celica
1. Disconnect defogger switch 10-pin connector. Check continuity between ground and defogger switch
harness connector terminal No. 3 (White/Black wire). See Fig. 2
. If continuity exists, go to next step. If
continuity does not exist, repair ground circuit as necessary. See WIRING DIAGRAMS
.
2. Turn ignition on. Measure voltage between ground and defogger switch harness connector terminal No. 5
(Red/White wire). Battery voltage should exist. With ignition switch in LOCK or ACC position, no
voltage should exist. If voltage is as specified, go to next step. If voltage is not as specified, repair
appropriate circuit as necessary. See WIRING DIAGRAMS
.
3. Connect defogger switch harness connector. Turn ignition on. Measure voltage between ground and
defogger switch connector (backprobe) terminal No. 5 (Red/White wire). Battery voltage should exist.
Turn defogger switch to ON position. No voltage should exist. If voltage is not as specified, replace
defo
gger switch and retest system.

1999 Toyota RAV4
1999-2000 ACCESSORIES & EQUIPMENT Rear Window & Mirror Defoggers
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