On-Vehicle Inspection

DIFFERENTIAL: DIFFERENTIAL SYSTEM: ON-VEHICLE INSPECTION

NOTICE:
* Switch the four wheel drive control switch when the A/T shift lever is in the N position and the vehicle speed is 3 mph (5km/h) or less.
* Switch the four wheel drive control switch when the clutch start switch is turned ON and the vehicle speed is 2mph (3 km/h) or less.
* Do not change from H2 to H4 when the vehicle speed is 62 mph (100 km/h) or more.

1. INSPECT H2 (2WD)-H4 (4WD) SHIFT





(a) Start the engine.

(b) Turn the four wheel drive control switch from the H2 position to the H4 position.

(c) Check that the 4WD indicator light blinks and then stays on.

(d) Turn the four wheel drive control switch from the H4 position to the H2 position.

(e) Check that the 4WD indicator light blinks and then goes off.

2. INSPECT H4 (4WD)-L4 (4WD) SHIFT





(a) Start the engine.

(b) Turn the four wheel drive control switch from the H4 position to the L4 position while pressing it.

(c) Check that the 4LO indicator light blinks and then stays on.

(d) Turn the four wheel drive control switch from the L4 position to the H4 position while pressing it.

(e) Check that the 4LO indicator light blinks and then goes off.

3. INSPECT H2 (2WD)-L4 (4WD) SHIFT





(a) Start the engine.

(b) Turn the four wheel drive control switch from the H2 position to the H4 position.

(c) Check that the 4WD indicator light blinks and then stays on.

(d) Turn the four wheel drive control switch from the H4 position to the L4 position while pressing it.

(e) Check that the 4LO indicator light blinks and then stays on.

4. INSPECT L4 (4WD)-H2 (2WD) SHIFT





(a) Start the engine.

(b) Turn the four wheel drive control switch from the L4 position to the H4 position while pressing it.

(c) Check that the 4LO indicator light blinks and then goes off.

(d) Turn the four wheel drive control switch from the H4 position to the H2 position.

(e) Check that the 4WD indicator light blinks and then goes off.

5. INSPECT REAR DIFFERENTIAL LOCK SYSTEM (w/ Differential Lock)





(a) Inspect the indicator light.

(1) Check that the indicator light illuminates for approx. 1 second when the ignition switch is turned ON.

(b) Inspect the differential lock operation.

(1) Jack up the vehicle and start the engine.

(2) When the differential lock control switch is ON the indicator light blinks.

HINT
If the gears of the differential lock system are not engaged, the indicator light continues blinking, so rotate the tires to engage the gear.

(3) When the differential lock control switch is in the OFF position, the indicator light goes off. The differential lock is released for the rear wheel at this time.

(4) Check the voltage between the terminals of the rear differential lock control ECU when switching the rear differential lock control ON, with the speedometer registering at approximately 7 mph (11 km/h) or more.









(5) Return the differential lock control switch to OFF.

(6) Stop the engine and lower the vehicle.

6. INSPECT DIFFERENTIAL LOCK SYSTEM CIRCUIT (w/ Differential Lock)

(a) Inspect the battery positive voltage.

Battery positive voltage:

10 to 14 V

(b) Inspect the system circuit with the connector disconnected.

Disconnect the connector from the rear differential lock control ECU and inspect the connector on the wire harness side, as shown in the table.





Standard:





If the result is not as specified value, check and repair or replace the malfunctioning part shown in the table above.

(c) Inspect the system circuit with the connector connected.





(1) Turn the ignition switch to the ON position.

(2) Using a voltmeter, measure the voltage when the differential lock control switch is in the positions shown in the table.





HINT
*1: The rear differential should be locked mechanically. If the result is not as specified, replace the ECU.

(3) Install the ECU.