C1A67:96

Cruise Control

Pinpoint Test D: DTC C1A67:96

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 C-CM (Cruise-Control Module) 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. The brake lamp control circuit is pulled low by the ABS module which controls the brake lamp relay. This activates the brake lamps when the brakes are applied for the adaptive cruise control system.

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

This pinpoint test is intended to diagnose the following:

- C-CM (Cruise-Control Module)

PINPOINT TEST D : DTC C1A67:96

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

D1 CHECK THE DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND C-CM (Cruise-Control Module) SELF-TESTS

- Ignition ON.

- Clear continuous DTCs from all modules.

- Ignition OFF.

- Ignition ON.

- Wait at least 10 seconds.

- Carry out the C-CM (Cruise-Control Module) self-test.

- Check the C-CM (Cruise-Control Module) 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 (Cruise-Control Module) connector and the dedicated HS-CAN (High Speed Controller Area Network) bus wire for corrosion. CLEAN and REPAIR if corrosion is present. CLEAR the DTCs. TEST the system or normal operation.

D2 CHECK FOR CORRECT C-CM (Cruise-Control Module) OPERATION

- Disconnect the C-CM (Cruise-Control Module) connector.

- Check for:
- corrosion

- damaged pins

- pushed-out pins


- Connect the C-CM (Cruise-Control Module) 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 (Cruise-Control Module). REFER to Cruise-Control Module (C-CM) . 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.