C1610

DTC C1610: Electronic Relay Abnormality of AWC Actuator Power Supply

CAUTION
^ If there is any problem in the CAN bus lines, an incorrect diagnostic trouble code may be set. Prior to this diagnosis, diagnose the CAN bus lines.
^ Whenever the ECU is replaced, ensure that the CAN bus lines are normal.

OPERATION
A relay is incorporated in AWC-ECU, and the power is supplied to the actuator via this relay.

DTC SET CONDITIONS
When the actuator power supply relay in AWC-ECU is seized, the code is set.

PROBABLE CAUSES
^ Malfunction of AWC-ECU

DIAGNOSIS

STEP 1. Scan tool CAN bus diagnostics
Using scan tool MB991958, diagnose the CAN bus lines.
Q: Is the check result normal?
YES: Go to Step 3.
NO: Repair the CAN bus lines. (Refer to Troubleshooting CAN Bus Diagnostics Table). After repairing the CAN bus line, go to Step 2.

STEP 2. Check whether the DTC is reset.
Q: Is DTC No. C1610 set?
YES: Replace the AWC-ECU.
NO: This diagnosis is complete.

STEP 3. Check whether the DTC is reset.
Q: Is DTC No. C1610 set?
YES: Replace the AWC-ECU.
NO: Intermittent malfunction. (Refer to How to Cope with Intermittent Malfunction How to Use Troubleshooting/Inspection Service Points).