Automatic Level Control Diagnosis

DTC C0625
Circuit Description
The automatic level control sensor (ALC) is a potentiometer. The rear integration module (RIM) determines the height of the rear of the vehicle based on the voltage from the ALC sensor. The RIM raises or lowers the rear of the vehicle in order to keep the vehicle level.

DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0625 Left Rear Position Sensor Circuit

Conditions for Running the DTC
The RIM is powered up and DTC B1327 is not set.

Conditions for Setting the DTC
^ The ALC signal voltage is less than 0.35 volts or greater than 4.75 volts.
^ The above conditions are present for greater than 10 seconds.

Action Taken When the DTC Sets
The ALC suspension will be inoperative.

Conditions for Clearing the MIL/DTC
The RIM does not detect a voltage above or below the predetermined value during the diagnostic self test.

Diagnostic Aids
Refer to Testing for Intermittent Conditions and Poor Connections.

Test Description








The numbers below refer to the step numbers on the diagnostic table.
4. This step tests for the proper operation of the circuit in the high range. If the fuse in the jumper opens when you perform the test, the signal circuit is shorted to ground.
5. This step tests for a short to voltage in the 5-volt reference circuit.