C1002

DTC C1002

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) provides an overview of each diagnostic category.

DTC Descriptor
DTC C1002 00
- Distance Sensing Cruise Control Module Range/Performance

Circuit/System Description

The forward looking sensor (FLS) has the exclusive function of detecting, tracking and classifying targets within its specified field of view. The FLS has the ability to detect and react to objects of interest in its detection zone and is critical to the proper operation of the adaptive cruise control (ACC) system. When the distance sensing cruise control module (DSCC) detects that the FLS is out of alignment, DTC C1002 sets.

Conditions for Running the DTC

* The ignition is ON.
* The cruise switch is ON.

Conditions for Setting the DTC

* The DSCC module detects there is 3.9 degrees of skew or error of the FLS.
* The vehicle speed is at or greater than 40.2 km/h (25 mph).

Actions Taken When the DTC Sets

* Loss of adaptive cruise control (ACC) function.
* Service Radar Cruise message is displayed in the driver information center (DIC).

Conditions for Clearing the DTC

* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear after 40 malfunction-free ignition cycles have occurred.

Diagnostic Aids

An FLS radar out of alignment condition may be as a result of tampering with the DSCC module mounting structures/brackets or the adjuster settings. An out of alignment condition may also be a result of damage to the front section vehicle or the DSCC module.

Reference Information
Schematic Reference

Cruise Control Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Cruise Control Description and Operation (Adaptive Cruise Control) (Cruise Control (Adaptive Cruise Control))Cruise Control Description and Operation (Conventional Cruise Control) (Cruise Control (Conventional Cruise Control))
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information
Special Tools

BO-47670 Adaptive Cruise Control (ACC) Radar Alignment Tool

Circuit/System Testing

1. Align the FLS radar. Refer to Distance Sensing Cruise Control Aiming (Adjustments).

• If alignment cannot be achieved within the limits of the available adjustment, inspect the mounting structures and brackets for damage or tampering and repair as necessary to achieve proper alignment.

2. Road test the vehicle and ensure the ACC system functions normally and DTC C1002 does not set as current. Refer to Cruise Control Description and Operation (Adaptive Cruise Control) (Cruise Control (Adaptive Cruise Control))Cruise Control Description and Operation (Conventional Cruise Control) (Cruise Control (Conventional Cruise Control)).

• If DTC C1002 resets as current, replace the FLS radar.

Repair Instructions

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

Control Module References (Programming and Relearning) for DSCC module replacement, setup, and programming