Diesel Data: Automotive Repair

C0626



DTC C0626

Circuit Description
The air suspension sensor provides a signal voltage between 0.3 - 4.7 volts to the air suspension module. This signal voltage represents the wheel's position relative to the body. The air suspension module provides a 5-volt reference and a low reference to the sensor.

DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C0626 Left Rear Position Sensor Circuit Range

Conditions for Running the DTC
At power-up and continuous when ignition is activated.

Conditions for Setting the DTC
The air suspension module senses a suspension sensor voltage below 0.3 volts or above 4.7 volts.

Action Taken When the DTC Sets
^ Air Suspension 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 air suspension module from the air suspension sensor-LR.

Test Description








The numbers below refer to the step numbers on the diagnostic table.
2. This step checks the air suspension sensor-LR data parameter.
3. This step tests for the proper operation of the circuit in the high voltage range.
4. This step tests for the proper operation of the circuit in the low voltage range. If the fuse in the jumper opens upon performing this test, the signal circuit has a short to voltage.
5. This step tests for a short to ground in the 5-volt reference circuit.
7. This step tests the 5-volt reference circuit for the air suspension sensor - LR.