DTC 01

DTC 001

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provide an overview of each diagnostic category.

DTC Descriptor
DTC 001
- System Disabled Information Stored

Circuit/System Description

The air suspension compressor assembly monitors the calibrations in the electrically erasable programmable read-only memory (EEPROM). The module also monitors the compressor, solenoids and internal wiring for faults.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

The air suspension compressor assembly detects an invalid EPROM checksum or internal component failure.

Action Taken When the DTC Sets

Depending on the condition that set the DTC, some or all functions will be disabled.

Conditions for Clearing the DTC

The DTC will automatically clear when the condition for setting the DTC is removed and the ignition has cycled from ON to OFF to ON.

Circuit/System Verification

Verify that DTC 001 is not set.

If the DTC is set , cycle the ignition OFF to ON. If the DTC resets, replace the air spring compressor.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

Automatic Level Control Air Compressor Replacement (Service and Repair)