| 1 |
CHECK 4LO POSITION SWITCH SIGNAL
- With SDT
- Start engine.
- Select "Data list" mode for "4WD" with SDT.
- Read out the value of "4L POSI SW".
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- 2)
Without SDT
- Start engine.
- Check voltage between transfer control unit harness connector terminal and ground.
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Are the inspection results normal? |
GO TO 5. |
GO TO 2. |
| 2 |
CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND 4LO SWITCH
- Turn ignition switch "OFF". (Stay for at least 5 seconds.)
- Disconnect transfer control unit harness connector and the 4LO switch harness connector.
- Check continuity between transfer control unit harness connector M152 terminal 24 and 4LO switch harness connector F60 terminal 13.
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Continuity should exist.
Also check harness for short to ground and short to power.
Is there continuity? |
GO TO 3. |
Repair or replace damaged parts. |
| 3 |
CHECK GROUND CIRCUIT
- Turn ignition switch "OFF". (Stay for at least 5 seconds.)
- Disconnect 4LO switch harness connector.
- Check continuity between 4LO switch harness connector F60 terminal 12 and ground.
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Continuity should exist.
Also check harness for short to power.
Is there continuity? |
GO TO 4. |
Repair open circuit or short to power in harness or connectors. |
| 4 |
CHECK 4LO SWITCH
- Turn ignition switch "OFF". (Stay for at least 5 seconds.)
- Disconnect 4LO switch harness connector.
- Remove 4LO switch. Refer to
[4WD SYSTEM: COMPONENT PARTS LOCATION ].
- Push and release 4LO switch and check continuity between 4LO switch terminals 12 and 13.
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Are the inspection results normal? |
GO TO 5. |
Replace 4LO switch. |
| 5 |
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
[TRANSFER CONTROL UNIT: REFERENCE VALUE ].
Are the inspection results normal? |
GO TO 6. |
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
Drive the vehicle and then perform "DTC check".
Is DTC P1810 displayed? |
Replace transfer control unit. Refer to
[4WD SYSTEM: COMPONENT PARTS LOCATION ]. |
Inspection End. |