C1240

DTC C1240: 4WD Control Module Power Supply Circuit Malfunction

Wiring Diagram










DTC Detecting Condition and Trouble Area






DTC Confirmation Procedure

1) Clear DTC using scan tool.
2) Turn ignition switch to ON position for 10 seconds.
3) Check DTC.

Troubleshooting

1.
Was "4WD control system check" performed?
YES -
Go to Step 2.
NO -
Go to 4WD Control System Check 4WD Control System Check.

2. 4WD control module power circuit check

Disconnect 4WD control module connector with ignition switch OFF.
Check for proper connection to "G26" terminal of 4WD control module connector.
If connection is OK, measure voltage between "G26-11" terminal of 4WD control module connector and vehicle body ground.

Is it 10 - 14 V?
YES -
Go to Step 3.
NO -
"4WD" fuse blown, "ORN" or "YEL" wire is circuit open or circuit short.

3. Ground circuit check

Turn ignition switch to OFF position.
Check for proper connection to "G26-10" terminal of 4WD control module connector.
If OK, measure resistance between "G26-10" terminal of 4WD control module connector and vehicle body ground.

If resistance 1 ohms or less?
YES -
Substitute a known-good 4WD control module and recheck.
NO -
Repair ground circuit.