DTC C1240
Precautions: Precautions for Diagnosing Trouble · Precautions for Driveline / Axle · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
C1240: 4WD Control Module Power Supply Circuit Malfunction 4WD control module power supply voltage is higher than or lower than specified value for specified time. |
•Charging system
•4WD control module power supply circuit •4WD control module |
Circuit Diagram
| [A]: | 4WD control module connector (View: [a]) | A2: | 4WD control module ground circuit | 3. | “J/B” fuse |
| [B]: | D16AA model | 1. | 4WD control module | ||
| A1: | 4WD control module power supply circuit | 2. | “4WD” fuse |
DTC Confirmation Procedure
1)Set ignition “ON”.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “4WD control system check” performed?
|
Go to Step 2.
|
Go to 4WD Control System Check.
|
| 2 |
4WD control module power supply circuit check
1)Disconnect “L14” connector with ignition “OFF”.
2)Check for proper connection to 4WD control module at “A1” circuit terminal.
3)If connection is OK, check that voltage between “A1” circuit and ground is battery voltage.
Is check result OK?
|
Go to Step 3.
|
“4WD” fuse blown. Repair or replace defective wire harness.
|
| 3 |
Charging system check
1)Check charging system.
•M16A model:
 •K14C model: •D16AA model: Is check result OK?
|
Substitute a known-good 4WD control module and recheck DTC.
|
Repair or replace charging system.
|