Actuator Position Switch

Actuator Position Switch

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

Data are reference value.

TRANSFER CONTROL UNIT TERMINALS AND REFERENCE VALUE

Data are reference value and are measured between each terminal and ground.

CAUTION: When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminals.

DIAGNOSTIC PROCEDURE
1. CHECK ACTUATOR POSITION SWITCH SIGNAL
With CONSULT-II
1. Start engine.
2. Select "DATA MONITOR" mode for "ALL MODE AWD/4WD" with CONSULT-II.

3. Read out the value of "SHIFT POS SW1" and "SHIFT POS SW2".

Without CONSULT-II
1. Start engine.

2. Check voltage between transfer control unit harness connector terminal and ground.

OK or NG
OK >> GO TO 5.
NG >> GO TO 2.

2. CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND ACTUATOR POSITION SWITCH
1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the transfer control device (actuator position switch) harness connector.

3. Check continuity between the following terminals.
- Transfer control unit harness connector E143 terminal 27 (W/L) and transfer control device (actuator position switch) harness connector F58 terminal 23 (W/L).
- Transfer control unit harness connector E143 terminal 44 (LG/B) and transfer control device (actuator position switch) harness connector F58 terminal 20 (LG/B).

Continuity should exist. Also check harness for short to ground and short to power.

OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.

3. CHECK GROUND CIRCUIT
1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect transfer control device (actuator position switch) harness connector.

3. Check continuity between transfer control device (actuator position switch) harness connector F58 terminal 22 (B) and ground.
Continuity should exist.
Also check harness for short to ground and short to power.

OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.

4. CHECK ACTUATOR POSITION SWITCH
1. Remove transfer control device.

2. Check operation by applying battery voltage to transfer control device (actuator motor) terminals 21 and 24.

CAUTION:
^ Do not operate actuator motor for more than 1 second.
^ Change the actuator motor position to "HIGH" when installing.
^ Be careful not to overheat the harness.

OK or NG
YES >> GO TO 5.
NO >> Replace transfer control device (actuator motor).

5. CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal.

OK or NG
OK >> GO TO 6.
NG >> Check transfer control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.

6. CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
OK or NG
OK >> Inspection End.
NG >> Replace transfer control device.

COMPONENT INSPECTION
1. Remove transfer control device.