P160A

P160A-ECU OVERTEMPERATURE

For a complete wiring diagram consult Diagrams/Electrical.


- When Monitored:
Continuously monitored with the engine running, ACC Module voltage is at battery voltage, and the ACC Module in normal mode.

- Set Condition:
ACC Module detects ambient temperatures greater than 85°C (185°F). The ACC module will disable the Adaptive Cruise Control (ACC) system and the ACC UNAVAILABLE message will display in the CCN. Once the DTC goes to stored, the ACC system will return to normal operation. The DTC will be cleared after the ACC Module sees 100 consecutive key cycles of the STORED DTC.







Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding Initial Inspection and Diagnostic Overview.


Diagnostic Test


1. DTC IS ACTIVE

NOTE: To help in the service of the Adaptive Cruise Control (ACC) System, it is recommended speaking to the customer to find out what type of environment they were driving in when the cruise concern took place. Heavy rain, snow, ice and fog can cause the ACC system to become unavailable. This should be considered normal operation and no repair is necessary.

With a scan tool, select View DTCs.
Is the DTC active at this time?

Yes


- Go To 2


No


- No repair is necessary. Ensure the lens is free of dirt, damage or other obstruction. Clear the DTC and verify the proper operation of the ACC system.




2. PCM DTC IS ACTIVE
With a scan tool, read the PCM DTCs.
Are there PCM DTC(s) present?

Yes


- Diagnose and repair the Engine DTC(s).


No


- The ACC Module has detected the ambient temperature above operating range. Once the temperature has decreased below 85°C (185°F) ACC operation will be restored.