C1204

DTC C1204 4WD SOLENOID

CONSULT-III REFERENCE VALUE IN DATA MONITOR MODE:

DIAGNOSTIC PROCEDURE
^ Check the following if "4WD SOLENOID [C1204]" is displayed in self-diagnostic results of CONSULT-III.

1. CHECK AWD SOLENOID 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 "ETS SOLENOID".





^ The values are changed by throttle opening and engine speed.
OK or NG
OK >> GO TO 6.
NG >> GO TO 2.

2. CHECK POWER SUPPLY
1. Turn ignition switch "OFF".
2. Disconnect AWD control unit harness connector.
3. Turn ignition switch "ON". (Do not start engine.)








4. Check voltage between AWD control unit harness connector terminal 9 and ground.
OK or NG
OK >> GO TO 3.
NG >> Check the following. If any items are damaged, repair or replace damaged parts.
^ 10 A fuse [No. 2], located in the fuse block (J/B)
^ Harness for short or open between battery and AWD control unit harness connector terminal 9

3. CHECK AWD SOLENOID CIRCUIT
1. Turn ignition switch "OFF".
2. Disconnect AWD control unit harness connector.








3. Check resistance between AWD control unit harness connector terminals 1 and 2.
OK or NG
OK >> GO TO 6.
NG >> GO TO 4.

4. CHECK AWD SOLENOID
1. Turn ignition switch "OFF".
2. Disconnect transfer assembly harness connector.





3. Check resistance between transfer assembly harness connector F43 terminals 1 and 2.
1-2: Approx. 2.45 Ohms
OK or NG
OK >> GO TO 5.
NG >> AWD solenoid is malfunctioning. Replace electric controlled coupling.

5. CHECK HARNESS BETWEEN AWD CONTROL UNIT AND AWD SOLENOID
1. Turn ignition switch "OFF".
2. Disconnect AWD control unit harness connector and transfer assembly harness connector.





3. Check continuity between the following terminals.
- AWD control unit harness connector M92 terminal 1 and transfer assembly harness connector F43 terminal 1.
- AWD control unit harness connector M92 terminal 2 and transfer assembly harness connector F43 terminal 2.
1-1: Continuity should exist.
2-2: Continuity should exist.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.

6. CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to TF-20, "AWD Control Unit Input/Output Signal Reference Value". AWD Control Unit Input/Output Signal Reference Value
OK or NG
OK >> GO TO 7.
NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts.

7. CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
OK or NG
OK >> INSPECTION END
NG >> Replace AWD control unit.

COMPONENT INSPECTION
1. Turn ignition switch "OFF".
2. Disconnect transfer assembly harness connector.





3. Check resistance between transfer assembly harness connector F43 terminals 1 and 2.
1-2: Approx. 2.45 Ohms
4. If NG, replace electric controlled coupling.