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DTC C2208: AWD-ECU internal error
 
 

cautionIf there is any problem in the CAN bus lines, an incorrect DTC may be stored. Prior to this diagnosis, always diagnose the CAN bus lines.
 
 
OPERATION
AWD-ECU monitors the coupling solenoid wiring harness abnormality and AWD-ECU internal error, and if any abnormality occurs, it deactivates the system.
 
 
DTC SET CONDITIONS
If the following conditions are met when the system is activated, AWD-ECU switches the control from AWD to FWD, flashes the AWD/LOCK indicators alternately, and stores DTC C2208.
  • AWD-ECU internal malfunction detection or short to power supply at harness between AWD-ECU and the electronic control coupling solenoid
 
 
TROUBLESHOOTING HINTS
Current trouble
  • AWD-ECU internal error
  • Damaged wiring harness and connectors
    • Short to power supply between AWD-ECU and the electronic control coupling solenoid
Past trouble
  • Intermittent wiring harness or connector failure
    noteFor diagnosis procedures, refer to "How to treat past trouble" (Refer to GROUP 00 - How to Use Troubleshooting/How to Treat Past Trouble ).
  • AWD-ECU internal error
 
 
DIAGNOSIS
STEP 1. Scan tool MB991958 CAN bus diagnostics
Use scan tool MB991958 to diagnose the CAN bus lines.
Is the check result normal?
Go to Step 3.
Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting/CAN Bus Diagnostics Table ). On completion, go to Step 2.
 
STEP 2. Check whether the DTC is stored again after repairing the CAN bus line.
(1) Erase the DTC.
(2) Turn the ignition switch from the "LOCK" (OFF) position to the "ON" position at least 3 times.
(3) Fully depress the accelerator pedal, and maintain its position for 2 seconds.
noteThe coupling coil electronic control is also based on the accelerator pedal opening degree, thus the signal is sent to the ECU.
(4) Check if the DTC is stored.
Is DTC C2208 stored?
Go to Step 3.
The procedure is complete.
 
STEP 3. Check the following connector:
Check the connectors below for improper engagement, terminal damage or terminal drawn in the connector case.
  • C-228 AWD-ECU connector
  • D-21 intermediate connector
  • D-23 electronic control coupling solenoid connector
Are the connectors and terminals in good condition?
Go to Step 4.
Repair the connector(s) or terminal(s). Then go to Step 6.
 
STEP 4. Wiring harness check
Check the wiring harness between the C-228 AWD-ECU connector and the D-21 intermediate connector, and the wiring harness between the D-21 intermediate connector and the D-23 electronic control coupling solenoid side connector for damage or other problem.
Is the wiring harness in good condition?
Go to Step 5.
Repair damage or other problem in the wiring harness. Then go to Step 6.
 
STEP 5. Check whether the DTC is stored again.
(1) Erase the DTC.
(2) Turn the ignition switch from the "LOCK" (OFF) position to the "ON" position at least 3 times.
(3) Check if the DTC is stored.
Is DTC C2208 stored?
Replace AWD-ECU (Refer to ). Then go to Step 6.
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/How to Cope with Intermittent Malfunctions ).
 
STEP 6. Check whether the DTC is stored again.
(1) Erase the DTC.
(2) Turn the ignition switch from the "LOCK" (OFF) position to the "ON" position at least 3 times.
(3) Check if the DTC is stored.
Is DTC C2208 stored?
Diagnose again from Step 1.
The procedure is complete.