P1826

P1826 TRANSFER FLUID TEMPERATURE

Description
Signal voltage from the transfer fluid temperature sensor is abnormally high (Transfer fluid temperature is abnormally low) while driving.

DTC Logic

P1826:

DTC CONFIRMATION PROCEDURE

1. DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Perform self-diagnosis.
Is DTC P1826 displayed?
YES >> Perform diagnosis procedure. Refer to "Diagnosis Procedure".
NO >> Inspection End.

Diagnosis Procedure

1. CHECK TRANSFER FLUID TEMPERATURE SENSOR SIGNAL

With CONSULT-III
1. Start engine.
2. Select DATA MONITOR mode for ALL MODE AWD/4WD with CONSULT-III.
3. Readout the value of FLUID TEMP SE.





Without CONSULT-III
1. Start engine.








2. Check voltage between transfer control unit harness connector terminals and ground.
Are inspection results normal?
YES >> GO TO 4.
NO >> GO TO 2.

2. CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND TRANSFER TERMINAL CORD ASSEMBLY
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and transfer terminal cord assembly harness connector .





3. Check continuity between the following terminals.
- Transfer control unit harness connector E143 terminal 28 and transfer terminal cord assembly harness connector F56 terminal 3.
- Transfer control unit harness connector E143 terminal 31 and transfer terminal cord assembly harness connector F56 terminal 2.
Continuity should exist.
Also check harness for short to ground and short to power.
Are inspection results normal?
YES >> GO TO 3.
NO >> Repair or replace damaged parts.

3. CHECK TRANSFER FLUID TEMPERATURE SENSOR
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer terminal cord assembly harness connector.








3. Check resistance between transfer terminal cord assembly terminals 2 and 3.
Are inspection results normal?
YES >> GO TO 4.
NO >> Replace transfer fluid temperature sensor.

4. CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to DLN-79, "Reference Value". Reference Value
Are inspection results normal?
YES >> GO TO 5.
NO >> Check transfer control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.

5. CHECK DTC
Drive the vehicle and then perform self-diagnosis.
Are inspection results normal?
YES >> Inspection End.
NO >> Replace transfer control unit.

Component Inspection
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer terminal cord assembly harness connector.








3. Check resistance between transfer terminal cord assembly terminals 2 and 3.
4. If the inspection results are abnormal replace the transfer fluid temperature sensor.