Circuit Description
The automatic level control (ALC) sensor provides a signal voltage between 0.3-4.7 volts to its internal module. This signal voltage represents the wheel's position relative to the body. The ALC module is internal to the ALC sensor, and no external circuits are involved.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0625 Left Rear Position Sensor Circuit
This vehicle has DTCs which include DTC Symptoms. For more information on DTC Symptoms, refer to DTC Symptom Description .
DTC Symptom | DTC Symptom Descriptor |
|---|---|
08 | Signal Invalid |
Conditions for Running the DTC
At power-up and continuous when ignition is activated
Conditions for Setting the DTC
The ALC control module senses a suspension sensor voltage below 0.3 volt or above 4.7 volts.
Action Taken When the DTC Sets
| • | ALC functionality is suspended. |
| • | SERVICE AIR SUSPENSION message is displayed. |
Conditions for Clearing the DTC
The DTC will clear when the condition for setting the DTC is removed.
Diagnostic Aids
This DTC is set for a high or low signal to the ALC control module from the position sensor. The ALC module is internal to the ALC sensor, and no external circuits are involved.
Step | Action | Values | Yes | No |
|---|---|---|---|---|
Schematic Reference: Automatic Level Control Schematics | ||||
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | |
2 |
Is the Suspension Position Sensor Signal parameter within the specified range? | 0.3-4.7 V | Go to Diagnostic Aids | Go to Step 3 |
3 | Inspect for poor connections at the harness connector of the automatic level control (ALC) sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs . Did you find and correct the condition? | -- | Go to Step 5 | Go to Step 4 |
4 | Replace the ALC sensor. Refer to Automatic Level Control Sensor Replacement . Did you complete the replacement? | -- | Go to Step 5 | -- |
5 |
Does DTC C0625 reset? | -- | Go to Step 2 | System OK |
