C0711

DTC C0711
Circuit Description
The suspension control module uses a 5-volt analog air pressure sensor to determine the amount of air pressure in the automatic level control (ALC ) system. The valid signal voltage range of the sensor is 0.15 - 4.85 volts. The sensor signal voltage will increase and decrease within the valid voltage range as system pressure increases and decreases.

DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0711 Level Control Air Pressure Sensor Circuit

Conditions for Running the DTC
The ignition is ON.

Conditions for Setting the DTC
^ The air pressure sensor signal voltage is out of the valid range.
^ A short to ground, short to voltage, or an open in the pressure sensor, or the circuits to the sensor

Action Taken When the DTC Sets
^ DTC C0711 is stored in memory.
^ The ALC system pressure is set to a default value.
^ The ALC system is disabled.

Conditions for Clearing the DTC
^ A current DTC will clear when the malfunction is no longer present.
^ A history DTC will clear after 100 malfunction-free ignition cycles.
^ Using a scan tool

Diagnostic Aids
If DTC C0870 is present, perform the diagnosis for that DTC first.
The following conditions may cause a malfunction to occur:
^ An open in the 5-volt reference circuit of the air pressure sensor
^ A short to ground in the 5-volt reference circuit of the air pressure sensor
^ An open in the signal circuit of the air pressure sensor
^ A short to ground in the signal circuit of the air pressure sensor
^ An open in the low reference circuit of the air pressure sensor
^ A malfunction in the air pressure sensor
^ A leak in the air tube at the air pressure sensor may cause a faulty sensor voltage reading.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. This step tests for a high resistance or an open in the ground circuit.
7. This step checks for a open or high resistance in the sensor ground circuit.
13. The replacement suspension control module must be calibrated.

Step 1 - Step 11:

Step 12 - Step 14: