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 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. When the DSCC module detects that the FLS
radar is out of alignment, a DTC C1002 sets.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC C1002 Distance Sensing Cruise Control Module Range/Performance
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
| • | 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
| • | 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 malfunction free warm-up cycles. |
| • | 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 also be a result of damage to the front section of the ACC
equipped vehicle or the DSCC module. Refer to
Distance Sensing Cruise Control Aiming
and
Distance Sensing Cruise Control Module Replacement
in order to properly
align, adjust, or replace the DSCC module or the DSCC module brackets. |
