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DTC C1626: Actuator Power Supply Voltage Malfunction
 
 
 
 
OPERATION
The AWC-ECU monitors the actuator power supply voltage.
 
 
DTC SET CONDITIONS
The AWC-ECU monitors the actuator power supply voltage of immediately after the ignition is turned ON and when the abnormality of the actuator power supply voltage is detected, this DTC is set.
 
 
PROBABLE CAUSES
  • Malfunction of electronic control coupling solenoid
  • Damaged harness wires and connectors
  • Malfunction of AWC-ECU
 
 
DIAGNOSIS
Required Special Tools:
  • MB992006: Extra fine probe
STEP 1. Check of short to power supply in SOL+ line between electronic control coupling solenoid connector and AWC-ECU connector.
Is the check result normal?
Go to Step 2.
Repair the connector(s) or wiring harness.
 
STEP 2. Check of short to power supply in SOL- line between electronic control coupling solenoid connector and AWC-ECU connector.
Is the check result normal?
Go to Step 3.
Repair the connector(s) or wiring harness.
 
STEP 3. Check of the electronic control coupling solenoid
Refer to .
Is the check result normal?
Go to Step 4.
Replace the electronic control coupling (Refer to ).
 
STEP 4. Check whether the DTC is set again.
Is the DTC C1626 set?
Replace the AWC-ECU (Refer to ).
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).