|
Check if the tight corner braking phenomenon occurs during driving on a flat road with the 4WD switch being on the 4WD ECO or 4WD LOCK position.
|
|
Q.
Does the tight corner braking phenomenon occur?
|
|
This diagnosis is complete.
|
|
|
|
(1)Check the wiring harness between the 4WD-ECU connector (terminal SOL+, SOL-) and the electronic control coupling solenoid connector for damage or other problem.
|
|
(2)Check the connector(s) or terminal(s) or wiring harness above for damage or other problem.
|
|
Q.
Is the check result normal?
|
|
Repair the connector(s) or terminal(s) or wiring harness.
|
|
|
|
Check the data list for the items below.
|
|
- Item No.8: Steering angle sensor
- Item No.11: Accelerator position
- Item No.18: FL wheel speed sensor
- Item No.19: FR wheel speed sensor
- Item No.20: RL wheel speed sensor
- Item No.21: RR wheel speed sensor
- Item No.22: Yaw rate sensor
- Item No.23: Lateral G sensor
|
|
Q.
Is the check result normal?
|
|
Perform the troubleshooting of the ASC system (Refer to GROUP 35C - Troubleshooting/Diagnosis Code Chart ) or the engine control system (Refer to GROUP 13D - Troubleshooting/Inspection Chart for Diagnosis Code ). Then go to Step 4.
|
|
|
|
Check if the tight corner braking phenomenon occurs during driving on a flat road with the 4WD switch being on the 4WD ECO.
|
|
Q.
Does the tight corner braking phenomenon occur?
|
|
YES (Coil current in the electronic control coupling solenoid is 0 A) : Measure the coil current when the tight corner braking occurs. If the coil current measures 0 A, replace the electronic control coupling. Then go to Step 5.
|
|
|
|
YES (Coil current in the electronic control coupling solenoid is other than 0 A) : Measure the coil current when the tight corner braking occurs. If the coil current is other than 0 A, go to Step 5.
|
|
|
|
This diagnosis is complete. Then go to Step 6.
|
|
|
|
Q.
Does the malfunction occur again?
|
|
Replace 4WD-ECU. Then go to Step 6.
|
|
|
|
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/How to Cope with Intermittent Malfunctions).
|
|
|
|
Q.
Does the malfunction occur again?
|
|
Replace the electronic control coupling. Then go to Step 7.
|
|
|
|
This diagnosis is complete.
|
|
|
|
Q.
Does the malfunction occur again?
|
|
Diagnose again from Step 1.
|
|
|
|
This diagnosis is complete.
|
|
|