Code No. C1626: Electronic control coupling solenoid voltage failure

OPERATION

The 4WD-ECU monitors the actuator power supply voltage.

DIAGNOSIS CODE SET CONDITION

Electronic control coupling solenoid voltage monitor value: 10 V or more.

PROBABLE CAUSES

Malfunction of electronic control coupling solenoid
Damaged harness wires and connectors
Malfunction of 4WD-ECU

DIAGNOSIS PROCEDURE

STEP 1. Check the wiring harness between electronic control coupling solenoid connector and 4WD-ECU connector.

(1)Disconnect the 4WD-ECU connector and the electronic-controlled coupling solenoid connector.

(2)Measure the resistance between the wiring harness side connector terminals (SOL+ and SOL-) of the 4WD-ECU connector and body earth
OK: No continuity

Q. Is the check result normal?

	Go to Step 2

	Repair the defective connector or the wiring harness. Then go to Step 4.

STEP 2. Check of the electronic control coupling solenoid

Refer to

Q. Is the check result normal?

	Go to Step 3

	Replace the electronic control coupling (Refer to ). Then go to Step 4.

STEP 3. Check whether the diagnosis code is stored again.

Q. Is diagnosis code No.C1626 stored?

	Replace the 4WD-ECU (Refer to ). Then go to Step 4.

	Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).

STEP 4. Check whether the diagnosis code is stored again.

Q. Is diagnosis code No.C1626 stored?

	Return to Step 1.

	This diagnosis is complete.