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.

Diagnostic Fault Information

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Lane Warning Camera B+

1

1

--

--

Lane Warning Camera Ground

--

1

1

--

1. Vehicle Direction Alert Alarm Warning Malfunction

Circuit/System Description

The vehicle direction alert alarm warning (VDAAW) system is a convenience feature that detects an unintentional lane departure. The VDAAW system informs the vehicle operator of deviation from the road lane markings. The VDAAW system consists of the VDAAW module which includes a camera and an On/Off switch which is a soft key located on the navigation radio system. The VDAAW system receives switch inputs from the navigation radio via the serial data circuit. When the system is working and can detect lane markings, the VDAAW indicator in the IPC illuminates. The VDAAW indicator illuminates green when the system is operating properly and flashes amber when the vehicle crosses a lane marking without the turn signal. An audible warning sounds three times when the amber indicator is flashing. The VDAAW system will not warn the operator if the turn signal is on or if the operator makes a sharp maneuver. The VDAAW system communicates with the IPC via the serial data circuit.

Reference Information

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection 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 Testing

Important: Before disconnecting the harness connector at the VDAAW module, ensure that the ignition has been OFF for at least 120 seconds. Failure to do so may result in component damage.

  1. Ignition OFF for 120 seconds, disconnect the harness connector at the VDAAW module.
  2. Ignition OFF, test for less than 1.0 ohm between the ground circuit terminal 4 and ground.
  3. If greater than the specified range, test the ground circuit for an open/high resistance.
  4. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 2 and ground.
  5. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  6. If all circuits test normal, replace the VDAAW module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for VDAAW module replacement, setup, and programming