Pinpoint Test D: DTC C1A67:96

Cruise Control

Pinpoint Tests

Pinpoint Test D: DTC C1A67:96

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 C-CM commands the ABS module over the High Speed Controller Area Network (HS-CAN), which controls the brakes, to automatically apply the brakes to slow the vehicle to maintain a safe distance to the vehicle in front.

- DTC C1A67:96 (Forward Looking Sensor: Component Internal Failure) - sets when the C-CM detects an internal failure or invalid radar data with the radar sensor.

This pinpoint test is intended to diagnose the following:

- C-CM



PINPOINT TEST D: DTC C1A67:96

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D1 CHECK THE DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND C-CM SELF-TESTS


- Ignition ON.
- Clear continuous DTCs from all modules.
- Ignition OFF.
- Ignition ON.
- Wait at least 10 seconds.
- Carry out the C-CM self-test.
- Check the C-CM DTCs from the continuous and on-demand self-tests.
- Is DTC C1A67:96 recorded?

Yes
GO to D2.

No
The system is operating correctly at this time. The DTC may have been set due to an intermittent fault condition. CHECK the C-CM connector, and the HS-CAN bus wire for corrosion. CLEAN and REPAIR if corrosion is present. CLEAR the DTCs. TEST the system or normal operation.

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D2 CHECK FOR CORRECT C-CM OPERATION


- Disconnect the C-CM connector.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect the C-CM connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new C-CM. REFER to Cruise-Control Module (C-CM) Service and Repair. TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. REPEAT the self-test.

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