• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Left Rear Strut Position Sensor 5-Volt Voltage Reference | C0696 00 | C0625 08 | C0696 00 | -- |
Left Rear Strut Position Sensor Signal | C0625 08 | C0625 08 | C0625 08 | C0625 55 |
Left Rear Strut Position Sensor Low Reference | -- | C0625 08 | -- | -- |
Right Rear Strut Position Sensor 5-Volt Voltage Reference | C0696 00 | C0630 08 | C0696 00 | -- |
Right Rear Strut Position Sensor Signal | C0630 08 | C0630 08 | C0630 08 | C0630 55 |
Right Rear Strut Position Sensor Low Reference | -- | C0630 08 | -- | -- |
The air suspension adjusts the vehicle suspension ride height. The air suspension control module (ASCM) determines the height of the vehicle based on the signal from the rear height sensors which are supplied a 5-volt reference voltage from the module. The ASCM raises and lowers the vehicle in order to keep the vehicle level.
Battery voltage is between 9-16 volts.
The air suspension module detects that the supplied 5-volt reference voltage circuit for both suspension position sensors falls below 4.75 volts or exceeds 5.25 volts.
• | The air suspension system will be inoperative. |
• | The SERVICE SUSPENSION SYSTEM message will be displayed. |
• | When the fault is no longer present, DTC C0696 will change from a current DTC to a history DTC on the next ignition cycle. |
• | DTC C0696 will be cleared from history after 50 ignition cycles. |
Air Suspension Description and Operation
Control Module References for scan tool information
⇒ | If greater than the specified range, test the low reference circuit for an open or high resistance. If all circuits test normal, replace the air suspension control module. |
⇒ | If less that the specified range, test the 5-volt reference circuit for open/high resistance or a short to ground. If the circuit tests normal, replace the air suspension control module. |
⇒ | If greater that the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the air suspension control module. |
⇒ | If less than the specified range, test or replace the LR suspension position sensor. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Control Module References for air suspension control module replacement, setup and programming |