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

Cruise Control

Pinpoint Tests

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

Refer to Wiring Diagram Set 31, Cruise Control for schematic and connector information. Diagrams By Number

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 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 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
- C-CM fascia cover
- C-CM fascia foam



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

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

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F1 INSPECT THE C-CM FASCIA COVER FOR DAMAGE


- Inspect for damage on the front and back of the C-CM fascia cover and foam.
- Is the C-CM fascia cover damaged?

Yes
REPAIR or REPLACE the C-CM fascia cover as necessary. CLEAR the DTCs. TEST the system for normal operation.

No
GO to F2.

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


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

Yes
REMOVE the fascia cover. CLEAN the C-CM fascia cover, fascia 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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