Circuit Description
The right air suspension sensor arm is attached to an armature that rotates inside a coil. The air suspension compressor assembly determines the angle of the sensor arm by measuring the inductive voltage of the left air suspension sensor signal at 50 ms intervals via the left air suspension sensor signal circuit.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The air suspension compressor assembly detects a invalid air suspension sensor signal.
Action Taken When the DTC Sets
The air suspension compressor assembly shall disregard the right air suspension sensor input and use the left air suspension sensor to determine the vehicle height.
If both air suspension sensor DTCs are set, the Air Suspension Compressor Assembly shall deactivate the compressor, corner solenoids and exhaust solenoids. All leveling functions will be disabled. Inflator functions will not be disabled.
Conditions for Clearing the DTC
The DTC will automatically clear when the condition for setting the DTC is removed.
Diagnostic Aids
Resistance of the air suspension sensor at room temperature and normal vehicle height is approximately 87 ohms. The resistance range of the sensor is 75-100 ohms
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Suspension Controls Schematics | ||||
1 | Did you perform the Air Suspension Diagnostic System Check? | -- | Go to Step 2 | |
2 | Verify the fault is present. Does the system operate normally? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 |
Did you find and correct the condition? | -- | Go to Step 10 | Go to Step 4 |
4 | Test the air suspension sensor return circuit for an open, short to voltage and a short to ground. Refer to Testing for Continuity , Testing for a Short to Voltage and Testing for Short to Ground in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 10 | Go to Step 5 |
5 | Measure the resistance of the air suspension sensor. Does the resistance measure within the specified value? | 75-100 Ohms | Go to Step 6 | Go to Step 9 |
6 | Inspect for poor connections at the harness connector of the right air suspension sensor. Did you find and correct the condition? | -- | Go to Step 10 | Go to Step 7 |
7 | Inspect for poor connections at the harness connector of the Air Suspension Compressor Assembly. Did you find and correct the condition? | -- | Go to Step 10 | Go to Step 8 |
8 | Replace the air suspension compressor assembly. Refer to Automatic Level Control Air Compressor Replacement . Did you complete the replacement? | -- | Go to Step 10 | -- |
9 | Replace the right air suspension sensor. Refer to Air Spring Leveling Sensor Replacement . Did you complete the replacement? | -- | Go to Step 10 | -- |
10 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 3 |
