Code No. C1628: 4WD Current Failure


OPERATION



DIAGNOSIS CODE SET CONDITIONS




  • Commanded current to the electronic control coupling does not correspond with the monitored current value.

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 terminal SOL+, SOL-.
Check the power supply, earth line for open or short circuit.

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 reset.

Q. Is diagnosis code No.C1628 set?
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 reset.

Q. Is diagnosis code No.C1628 set?
Return to Step 1.
This diagnosis is complete.