Park/Neutral Position Switch
Park/Neutral Position SwitchTRANSFER CONTROL UNIT TERMINALS AND REFERENCE VALUE
CAUTION: When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminals.
DIAGNOSTIC PROCEDURE
1. CHECK PARK/NEUTRAL POSITION SWITCH SIGNAL
1. Start engine.
2. Check voltage between transfer control unit harness connector M152 terminal 33 and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2. CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND PARK/NEUTRAL POSITION SWITCH
1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the park/neutral position switch harness connector
3. Check continuity between transfer control unit harness connector M152 terminal 33 and park/neutral position switch harness connector F66 terminal 1.
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 park/neutral position switch harness connector.
3. Check continuity between park/neutral position switch harness connector F66 terminal 2 and ground.
Continuity should exist. Also check harness for short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to power in harness or connectors.
4. CHECK PARK/NEUTRAL POSITION SWITCH
1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Remove park/neutral position switch. Refer to "Location of Electrical Parts".
3. Push and release park/neutral position switch and check continuity between park/neutral position switch terminals 1 and 2.
OK or NG
OK >> GO TO 5.
NG >> Replace park/neutral position switch. Refer to "Location of Electrical Parts".
5. CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to "Transfer Control Unit Input/Output Signal Reference Values".
OK or NG
OK >> Inspection End.
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.
COMPONENT INSPECTION
1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect neutral position switch harness connector.
3. Remove neutral position switch. Refer to "Location of Electrical Parts".
4. Push and release neutral position switch and check continuity between neutral position switch terminals 1 and 2.
5. If NG, replace the neutral position switch. Refer to "Location of Electrical Parts".