Diagnostic Procedure
- STEP 1. Check whether the DTC is stored again.
- To release the electronic control coupling (front) protection control, leave the vehicle for 15 minutes or longer after the high fluid temperature warning on the warning indicator disappears.
- Erase the DTC.
- Carry out the test drive.NOTE: Do not carry out the severe test drive.
- Check if the DTC is stored.
Q: Is DTC No. C161F stored?
YES : Go to Step 2.
NO : This diagnosis is complete.
- STEP 2. Scan tool (M.U.T.-III) CAN bus diagnostics.
Use scan tool (M.U.T.-III) to perform the CAN bus diagnosis.
Q: Is the check result normal?
YES : Go to Step 4.
NO : Repair the CAN bus lines. (Refer to - Diagnosis, CAN BUS DIAGNOSTICS TABLE ). After repairing the CAN bus line, go to Step 3.
- STEP 3. Check whether the DTC is stored again.
Q: Is DTC No. C161F stored?
YES : Go to Step 4.
NO : This diagnosis is complete.
- STEP 4. Scan tool (M.U.T.-III) data list
Item 12: Engine speed (Refer to DATA LIST REFERENCE TABLE ).
Q: Is the check result normal?
YES : Go to Step 5.
NO : Perform the diagnosis for the engine control system. (Refer to - Diagnosis, DIAGNOSTIC TROUBLE CODE CHART ).
- STEP 5. Scan tool (M.U.T.-III) data list
Check the following data list. (Refer to DATA LIST REFERENCE TABLE ).
- Item No. 21: Wheel speed sensor <FL>
- Item No. 22: Wheel speed sensor <FR>
- Item No. 23: Wheel speed sensor <RL>
- Item No. 24: Wheel speed sensor <RR>
Q: Is the check result normal?
YES : Go to Step 6.
NO : Perform the troubleshooting for the ASC. (Refer to - TROUBLESHOOTING ).
- STEP 6. Scan tool (M.U.T.-III) data list
Check the following data list. (Refer to DATA LIST REFERENCE TABLE ).
- Item No. 34: Ambient temperature (CAN input)
- Item No. 35: Ignition off time (CAN input)
Q: Is the check result normal?
YES : Go to Step 7.
NO : Perform the diagnosis for the ETACS. (Refer to - Diagnosis, DIAGNOSTIC TROUBLE CODE CHART ).
- STEP 7. Check of the electronic control coupling (Front)
Refer to ELECTRONIC CONTROL COUPLING SOLENOID (FRONT) CHECK <VEHICLES WITH S-AWC> .
Q: Is the check result normal?
YES : Go to Step 8.
NO : Replace the transfer assembly (Refer to REMOVAL AND INSTALLATION <VEHICLES WITH S-AWC> ).
- STEP 8. Check whether the DTC is stored again.
- To release the electronic control coupling (front) protection control, leave the vehicle for 15 minutes or longer after the high fluid temperature warning on the warning indicator disappears.
- Erase the DTC.
- Carry out the test drive.NOTE: Do not carry out the severe test drive.
- Check if the DTC is stored.
Q: Is DTC No. C161F stored?
YES : Replace the AWC-ECU. (Refer to AWC-ECU <VEHICLES WITH S-AWC> ).
NO : Intermittent malfunction. (Refer to - HOW TO COPE WITH INTERMITTENT MALFUNCTION ).