Pinpoint Test F: The Adaptive Cruise Control Does Not Function In Rain Or Snow Conditions

Cruise Control

Pinpoint Tests

Pinpoint Test F: The Adaptive Cruise Control Does Not Function In Rain Or Snow Conditions

Normal Operation

The adaptive cruise control system is enabled when the vehicle speed is set and the Cruise-Control Module (C-CM), which is a radar sensor unit, determines the distance and relative speed of the vehicle that is in the path of travel. The adaptive cruise control system has limited performance in rain and snow conditions. The radar sensor unit can be blocked or obstructed due to these types of weather conditions.

- DTC C1A67:97 (Forward Looking Sensor: Component Or System Obstructed Or Blocked) - set by the C-CM as a continuous memory and on-demand DTC if the C-CM detects an obstruction or if the sensor is blocked.

This pinpoint test is intended to diagnose the following:

- C-CM
- Blockage or obstruction
- Front bumper cover
- C-CM foam



PINPOINT TEST F: THE ADAPTIVE CRUISE CONTROL DOES NOT FUNCTION IN RAIN OR SNOW CONDITIONS

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F1 INSPECT THE FRONT BUMPER COVER FOR DAMAGE


- With the vehicle in NEUTRAL, position it on a hoist. Refer to Vehicle Jacking and Lifting.
- Remove the front lower air defector. Refer to Bumper - Exploded View, Front in Bumper.
- Inspect for damage on the front and back of the front bumper cover and C-CM foam.
- Is the front bumper cover damaged?

Yes
REPAIR or REPLACE the front bumper cover as necessary. If installing a new front bumper cover, REFER to Bumper. CLEAR the DTCs. TEST the system for normal operation.

No
GO to F2.

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F2 INSPECT THE C-CM AND FRONT BUMPER COVER FOR DEBRIS, MOISTURE, SNOW OR ICE


- Inspect for debris, moisture, snow or ice on the front and back of the front bumper cover, C-CM foam and sensor.
- Is the C-CM obstructed or blocked?

Yes
CLEAN the front bumper cover, C-CM foam and radar sensor portion as necessary. CLEAR the DTCs. TEST the system for normal operation.

No
The system is operating normally at this time. This condition may have been cause by previous snow or water build up. CLEAR the DTCs. TEST the system for normal operation.

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