For 1990-2009 cars

### Circuit 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 radar 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. When the DSCC module detects that the FLS radar is out of alignment, DTC C1002 sets.

### DTC Descriptor

The diagnostic procedure supports the following DTCs:

DTC C1002 DSCC Module Range/Performance

### Conditions for Running the DTC

The ignition is ON.

### Conditions for Setting the DTC

• | 3.9 degrees of deviation or error of the FLS.

• | The vehicle speed is greater than or equal to 40.2 km/h (25 mph).

### Action Taken When the DTC Sets

• | ACC fails

• | Service Radar Cruise indicator illuminates 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 ignition cycles without failure.

• | The DSCC module receives a clear code command from the scan tool.

### Diagnostic Aids

• | Align the forward looking sensor (FLS) radar using the FLS alignment tool. 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 be a result of damage to the front section of the ACC vehicle or the DSCC module. Refer to Alignment Procedures of the DSCC in order to properly align, adjust, or replace the DSCC module or the DSCC module brackets.

• | Refer to Cruise Control Description and Operation for the proper operation of the adaptive cruise control (ACC) system.