C1240

DTC C1240

DTC Detecting Condition and Trouble Area






Circuit Diagram










DTC Confirmation Procedure

1) Clear DTC.
2) Push engine switch to change ignition mode to "ON".
3) Check DTC.

DTC Troubleshooting


1. Was "4WD control system check" performed?
YES
Go to Step 2.
NO
Go to 4WD Control System Check.
2. 4WD control module power supply circuit check
Disconnect "L14" connector with ignition mode of keyless push start system in "OFF".
Check for proper terminal connection to "L14" connector.
If connection is OK, check that voltage between "A1" circuit and ground is battery voltage.
Is it in good condition?
YES
Go to Step 3.
NO
"4WD" fuse blown, repair or replace defective wire harness.
3. 4WD control module ground circuit check
Check that resistance between "A2" circuit and ground is less than 1.
Is it in good condition?
YES
Go to Step 4.
NO
Repair or replace defective wire harness.
4. Charging system check
Check charging system. Testing and Inspection
Is it in good condition?
YES
Substitute a known-good 4WD control module and recheck DTC.
NO
Repair or replace charging system.