SERVICE SPECIFICATIONS
| Item | Standard value | |
|---|---|---|
| Electronic control coupling solenoid resistance ohms [at 20°C (68°F)] | Electronic control 4WD | 2.2 - 4.0 |
| S-AWC | 1.6 - 3.7 | |
| Electronic control coupling stud bolt length mm (in) | 22.3 - 25.1 (0.88 - 0.99) | |
SERVICE SPECIFICATIONS
FREEZE FRAME DATA SPECIFICATIONS
| Item No. | Item | Unit/Content |
|---|---|---|
| 01 | Odometer | Xxxx mile |
| 02 | Ignition cycle | |
| 03 | Coupling torque | Xxxx N.m |
| 04 | Current trouble accumulative time | Xxxx min |
| 06 | Coupling temperature | Xxxx °F |
| 07 | CAN communication (ABS/ASC) error flag | OFF (Normal)/ON (Malfunction) |
| 08 | CAN communication (engine) error flag | OFF (Normal)/ON (Malfunction) |
| 09 | CAN communication (ETACS) error flag | OFF (Normal)/ON (Malfunction) |
| 15 | AWD mode | 2WD |
| 4WD | ||
| 4WD LOCK | ||
| 16 | FL wheel speed sensor | Xxxx mph |
| 17 | FR wheel speed sensor | Xxxx mph |
| 18 | RL wheel speed sensor | Xxxx mph |
| 19 | RR wheel speed sensor | Xxxx mph |
| Xxxx indicates the value. | ||
FREEZE FRAME DATA SPECIFICATIONS
Actuator test specifications
| Item No. | Check item | Driven component | Operating duration |
|---|---|---|---|
| 01 | AWD coupling control torque | Drive the electronic control coupling with the control torque of 0 N.m to 730 N.m (0 to 538 ft-lb). | Maximum 10 seconds |
| 02 | AWD mode | AWD LOCK | Maximum 1 minute |
| AWD | Maximum 1 minute | ||
| FWD | Maximum 1 minute |
ACTUATOR TEST SPECIFICATIONS
Scheme 1
| Terminal No. | Check item | Check condition | Normal condition | |
|---|---|---|---|---|
| 1 | Current command value of electronic control coupling solenoid | Drive mode selector: 4WD (AWD) Perform a test run of the vehicle. | 0 to 3 A | |
| 3 | Electronic control coupling solenoid power supply | Always | System voltage | |
| 4 | Ignition power supply voltage | Ignition switch: ON | System voltage | |
| Ignition switch: OFF | 1 V or less | |||
| 9 | Electronic control coupling solenoid current monitor value | Drive mode selector: 4WD (AWD) Perform a test run of the vehicle. | 0 to 3 A | |
| 10 | Ground | Always | 1 V or less | |
| 14 | Drive mode selector FWD signal | Ignition switch: ON | Drive mode selector: 2WD (FWD) | 1 V or less |
| Drive mode selector: 4WD (AWD) or LOCK | System voltage | |||
| 16 | Drive mode selector LOCK signal | Ignition switch: ON | Drive mode selector: LOCK | 1 V or less |
| Drive mode selector: 2WD (FWD) or 4WD (AWD) | System voltage | |||
ECU TERMINALS REFERENCE CHART
Scheme 2
- Raise the vehicle.
- Mark the front and rear tires for easy identification of tire rotation.
- Adjust the parking brake lever to the normal conditions. (Refer to PARKING BRAKE LEVER STROKE CHECK AND ADJUSTMENT.)
- Pull the parking brake lever by two notches. NOTE: Activating the parking brake slightly prevents the drive force transferring to the rear wheels by a friction in the electronic control coupling. If the following FWD mode is checked without the parking brake activation, the drive force is transferred to the rear wheels by a friction in the electronic control coupling.
- Start the engine, and move the shift lever into the D position.
- Depress the accelerator pedal gradually, and maintain the vehicle speed at approximately 10 km/h (6.0 mph).
- Switch the drive mode selector to the FWD mode, and check that the rear wheels are under FWD control (At this time, the AWD/LOCK indicators in the combination meter do not illuminate).
- Stop the engine.
- Start the engine again, and move the shift lever into the D position.
- Depress the accelerator pedal gradually, and maintain the vehicle speed at approximately 10 km/h (6.0 mph). CAUTION: The following checks in the AWD mode must be completed within one minute in total to protect the AWD drive system components and parking brake.
- Switch the drive mode selector to the AWD mode, and check that the rear wheels are rotating. (At this time, the AWD indicator in the combination meter illuminates.) After the above checks are completed, if the rear wheel rotation satisfies the above conditions, it is judged that the electronic control coupling operates correctly. If the rear wheel rotation does not satisfy the above conditions, replace the electronic control coupling. (Refer to ELECTRONIC CONTROL COUPLING.)
See also:
• TROUBLESHOOTING/DTC CHART
• TROUBLESHOOTING/DTC CHART