Code No. C1628: Electronic controlled coupling solenoid current fails: Diagnosis

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.

STEP 1. Measure the resistance at the AWD-ECU connector.
1. Disconnect the connector, and measure at the wiring harness side.
2. Resistance between AWD-ECU connector terminal SOL+, SOL- and body ground
  OK: No continuity
Q: Is the check result normal?
1. YES: Go to Step 3.
2. NO: Go to Step 2.
STEP 2. Check the wiring harness between electronic control coupling solenoid connector and AWD-ECU connector terminal SOL+, SOL-.
Check the power supply or ground line for short circuit.

Q: Is the check result normal?
1. YES: Go to Step 4.
2. NO: Repair the defective connector or the wiring harness.
STEP 3. Check of the electronic control coupling solenoid
Refer to CHECK OF ELECTRONIC CONTROL COUPLING .

Q: Is the check result normal?
1. YES: Go to Step 4.
2. NO: Replace the electronic control coupling (Refer to ELECTRONIC CONTROL COUPLING ).
STEP 4. Check whether the DTC is stored again.
Q: Is DTC No. C1628 stored?
1. YES: Replace the AWD-ECU (Refer to AWD-ECU ). Then go to Step 5.
2. NO: Intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).
STEP 5. Check whether the DTC is stored again.
Q: Is DTC No. C1628 stored?
1. YES: Return to Step 1.
2. NO: This diagnosis is complete.