C1002

DTC C1002

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) 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) radar is a part of the distance sensing cruise control (DSCC) module but has the exclusive function of detecting, tracking and classifying targets within its specified field of view. The FLS radars ability to detect and react to objects of interest in its detection zone is critical to the proper operation of the adaptive cruise control (ACC) system.


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).



Action 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 DTC becomes history when the conditions for setting the DTC are no longer present.
* The history DTC clears after 100 malfunction-free ignition cycles.



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

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

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

BO-047670 Adaptive Cruise Control (ACC) Radar Alignment Tool


Circuit/System Verification

1. Align the FLS radar using the alignment tool. 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.

• If the DTC sets as current, replace the DSCC module.




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