DESCRIPTION
The vehicle speed signal consists of pulses sent to the combination meter assembly from the master cylinder solenoid (skid control ECU)*1 or skid control ECU (brake actuator assembly)*2.
WIRING DIAGRAM
PROCEDURE
1. |
CHECK ECU TERMINAL VOLTAGE (INPUT VOLTAGE) |
(a) Disconnect the F14 combination meter assembly connector.
(b) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
NG | ![]() |
GO TO STEP 5 |
|
2. |
CHECK COMBINATION METER ASSEMBLY (OUTPUT VOLTAGE) |
(a) for 4WD:
(1) Disconnect the A6 master cylinder solenoid (skid control ECU) connector.
(2) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
(b) for 2WD:
(1) Disconnect the A53 skid control ECU (brake actuator assembly) connector.
(2) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
NG | ![]() |
GO TO STEP 4 |
|
3. |
CHECK COMBINATION METER ASSEMBLY (SPEED SIGNAL) |
(a) Check the input waveform. (1) Reconnect the F14 combination meter assembly connector. (2) Remove the combination meter assembly with the connector(s) still connected. (3) Connect an oscilloscope to terminal F14-29 (SI) and body ground. (4) Turn the ignition switch to ON. (5) Check the signal waveform according to the condition(s) in the table below. Measurement Condition
OK: The waveform displayed is as shown in the illustration. HINT: When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows. |
|
Result |
Proceed to |
---|---|
OK |
A |
NG (for 4WD) |
B |
NG (for 2WD) |
C |
A | ![]() |
REPLACE COMBINATION METER ASSEMBLY |
B | ![]() |
REPLACE MASTER CYLINDER SOLENOID (SKID CONTROL ECU) |
C | ![]() |
REPLACE SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY) |
4. |
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - SKID CONTROL ECU) |
(a) Disconnect the F14 combination meter assembly connector.
(b) Disconnect the A6 master cylinder solenoid (skid control ECU )*1 or A53 skid control ECU (brake actuator assembly)*2 connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F14-29 (SI) - A6-12 (SP1)*1 F14-29 (SI) - A53-11 (SP1)*2 |
Always |
Below 1 Ω |
A6-12 (SP1) - Body ground*1 A53-11 (SP1) - Body ground*2 |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE COMBINATION METER ASSEMBLY |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
5. |
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - NO. 4 JUNCTION BLOCK) |
(a) Disconnect the F14 combination meter assembly connector.
(b) Disconnect the 4B No. 4 junction block connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F14-28 (+S) - 4B-20 |
Always |
Below 1 Ω |
F14-28 (+S) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
6. |
CHECK HARNESS AND CONNECTOR (NO. 4 JUNCTION BLOCK) |
(a) Inspect for a short in the circuit that is connected to the junction block connector shown in the wiring diagram.
HINT:
If voltage is not present, it is possible that an ECU or circuit has a malfunction. The malfunctioning ECU or circuit will be diagnosed in the following steps.
(1) Disconnect the 4A No. 4 junction block connector.
*1 |
No. 4 Junction Block |
- |
- |
*a |
Front view of wire harness connector (to No. 4 Junction Block) |
- |
- |
(2) Disconnect the 4C No. 4 junction block connector.
(3) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
4C-16 - Body ground |
Ignition switch ON |
4.5 to 14 V |
4B-8 - Body ground |
Ignition switch ON |
4.5 to 14 V |
4A-90 - Body ground |
Ignition switch ON |
4.5 to 14 V |
Result |
Proceed to |
---|---|
Voltage is not present in one circuit |
A |
Voltage is present in all the circuits |
B |
B | ![]() |
REPLACE NO. 4 JUNCTION BLOCK |
|
7. |
SYSTEM CHECK |
(a) Select the circuit for which voltage was not present in the previous step.
Result
Tester Connection |
System that Uses the Circuit |
Proceed to |
---|---|---|
4C-16 - Body ground |
SFI system, smart key system*1, safety connect system*2, voltage inverter*1, intuitive parking assist system*3 |
A |
4B-8 - Body ground |
Tire pressure warning system |
B |
4A-90 - Body ground |
Audio and visual system or navigation system |
C |
B | ![]() |
GO TO STEP 16 |
C | ![]() |
GO TO STEP 17 |
|
8. |
CHECK HARNESS AND CONNECTOR (NO. 4 JUNCTION BLOCK - NO. 5 JUNCTION BLOCK) |
(a) Disconnect the 4C No. 4 junction block connector.
(b) Disconnect the 5B No. 5 junction block connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
4C-16 - 5B-25 |
Always |
Below 1 Ω |
4C-16 - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
9. |
CHECK HARNESS AND CONNECTOR (NO. 5 JUNCTION BLOCK) |
(a) Disconnect the 5A No. 5 junction block connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
5B-2 - 5A-13 |
Always |
Below 1 Ω |
5B-2 - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
10. |
CHECK HARNESS AND CONNECTOR (NO. 5 JUNCTION BLOCK) |
(a) Inspect for a short in the circuit that is connected to the junction block connector shown in the wiring diagram.
(1) Disconnect the 5C No. 5 junction block connector.
*1 |
No. 5 Junction Block |
- |
- |
*a |
Front view of wire harness connector (to No. 5 Junction Block) |
- |
- |
(2) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
5B-14 - Body ground |
Ignition switch ON |
4.5 to 14 V |
5C-1 - Body ground*1 |
Ignition switch ON |
4.5 to 14 V |
5A-1 - Body ground*1 |
Ignition switch ON |
4.5 to 14 V |
5A-38 - Body ground*2 |
Ignition switch ON |
4.5 to 14 V |
5A-73 - Body ground*3 |
Ignition switch ON |
4.5 to 14 V |
Result |
Proceed to |
---|---|
Voltage is not present in one circuit |
A |
Voltage is present in all the circuits |
B |
B | ![]() |
REPLACE NO. 5 JUNCTION BLOCK |
|
11. |
SYSTEM CHECK |
(a) Select the circuit for which voltage was not present in the previous step.
Result
Tester Connection |
System that Uses the Circuit |
Proceed to |
---|---|---|
5B-14 - Body ground |
SFI system |
A |
5C-1 - Body ground*1 |
Voltage inverter |
B |
5A-1 - Body ground*1 |
Smart key system |
C |
5A-38 - Body ground*2 |
Safety connect system |
D |
5A-73 - Body ground*3 |
Intuitive Parking Assist System |
E |
B | ![]() |
GO TO STEP 13 |
C | ![]() |
GO TO STEP 14 |
D | ![]() |
GO TO STEP 15 |
E | ![]() |
GO TO STEP 20 |
|
12. |
CHECK HARNESS AND CONNECTOR (ECM CIRCUIT) |
(a) Disconnect the F51 ECM connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F51-18 (SPD) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE ECM |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
13. |
CHECK HARNESS AND CONNECTOR (VOLTAGE INVERTER ASSEMBLY CIRCUIT) |
(a) Disconnect the N19 voltage inverter assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
N19-2 (SPD) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE VOLTAGE INVERTER ASSEMBLY |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
14. |
CHECK HARNESS AND CONNECTOR (POWER MANAGEMENT CONTROL ECU CIRCUIT) |
(a) Disconnect the F80 power management control ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F80-23 (SPD) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE POWER MANAGEMENT CONTROL ECU |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
15. |
CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER CIRCUIT) |
(a) Disconnect the F39 telematics transceiver connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F39-10 (SPDP) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE TELEMATICS TRANSCEIVER |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
16. |
CHECK HARNESS AND CONNECTOR (TIRE PRESSURE WARNING ECU CIRCUIT) |
(a) Disconnect the F7 tire pressure warning ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F7-2 (SPD) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE TIRE PRESSURE WARNING ECU |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
17. |
SYSTEM CHECK |
(a) Proceed to the appropriate inspection based on the components of the vehicle.
Component
Component |
Proceed to |
---|---|
for Navigation Receiver Type |
A |
for Radio and Display Type |
B |
for 9 Speakers Type |
C |
B | ![]() |
GO TO STEP 19 |
C | ![]() |
GO TO STEP 21 |
|
18. |
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER CIRCUIT) |
(a) Disconnect the G37 navigation receiver connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
G37-17 (SPD) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE NAVIGATION RECEIVER ASSEMBLY |
NG | ![]() |
REPAIR OR REPLACE HARNESS AND CONNECTOR |
19. |
CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER CIRCUIT) |
(a) Disconnect the G49 radio and display receiver connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
G49-17 (SPD) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
20. |
CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU CIRCUIT) |
(a) Disconnect the F95 clearance warning ECU connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F95-5 (SPD) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE CLEARANCE WARNING ECU ASSEMBLY |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
21. |
CHECK HARNESS AND CONNECTOR (STEREO COMPONENT AMPLIFIER ASSEMBLY) |
(a) Disconnect the N11 stereo component amplifier connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
N11-11 (SPD) - Body ground |
Always |
10 kΩ or higher |
OK | ![]() |
REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Shifting between H2 and H4
Shifting from H2 to H4
Type A
Reduce vehicle speed to less
than 50 mph (80 km/h).
Shift the front-wheel drive
control lever to H4.
Type B
Reduce vehicle speed to less
than 62 mph (100 km/h).
Push the “UNLOCK” button and
turn the front-whee ...
Removal
REMOVAL
CAUTION / NOTICE / HINT
CAUTION:
Wear protective gloves. Sharp areas on the parts may injure your hands.
HINT:
Use the same procedure for the RH and LH sides.
The procedure listed below is for the LH side.
PROCEDURE
1. PRECAUTI ...