GM Service Manual Online
For 1990-2009 cars only

Diagnostic Instructions

    • 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.

DTC Descriptor

DTC 011: Accessory Inflator Valve Circuit

Diagnostic Fault Information

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Accessory Inflator Valve Control

--

011

--

--

Accessory Inflator Valve B+

1

1

--

--

1. Accessory Inflator Fill Valve Inoperative

Circuit/System Description

The automatic level control sensor monitors the accessory inflator valve circuit for a open/high resistance circuit.

Conditions for Running the DTC

The ignition is ON.

Conditions for Setting the DTC

    • Open in the control circuit of the accessory inflator valve.
    • A malfunctioning accessory inflator valve.

Action Taken When the DTC Sets

    • The automatic level control sensor disables inflator functions.
    • Leveling functions shall continue.
    • A malfunctioning accessory inflator valve.

Conditions for Clearing the DTC

The conditions that caused the DTC to set have been removed.

Diagnostic Aids

When this DTC occurs, DTCs 032 and 033 will set.

Reference Information

Schematic Reference

Automatic Level Control Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Automatic Level Control Description and Operation

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Verify that automatic level control functions are disabled.

Circuit/System Testing

  1. Ignition OFF, disconnect the accessory inflator valve harness connector at the automatic level control sensor.
  2. Ignition ON, verify that a test lamp illuminates between the accessory inflator valve B+ circuit and ground.
  3. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the automatic level control sensor.
  4. Ignition ON, connect a test lamp between the accessory inflator valve control circuit and the B+ circuit of the accessory inflator valve. Command the accessory inflator valve ON and OFF.
  5. If the test lamp does not illuminate, test the control circuit for a short to ground or open. If the circuit tests normal, test or replace the automatic level control sensor.
    If the test lamp illuminates, test or replace the accessory inflator valve.
  6. If all circuits test normal, test or replace the automatic level control sensor.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Important: System untested code will continue to flash until self test has been completed after the automatic level control sensor replacement.

    •  Inflator Solenoid Replacement
    •  Automatic Level Control Solenoid Valve Replacement
    •  Control Module References for automatic level control sensor replacement, setup, and programming