Possible Causes
NOTE: The listed causes may not be a complete list of all potential issues and there may be other causes.
- Faulty Cooling Fan 3
- Cooling Fan 3 harness is open or shorted
- Poor electrical connection in the Cooling Fan 3 circuit
Description
The control modules connected to the serial data circuits monitor communication during normal vehicle operation. Operating information and commands are exchanged between the control modules. Each module in the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) is set when the Cooling Fan 3 status signal message counter is incorrect.
How to Repair
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Illuminated MIL (or Service Engine Soon Warning Light illuminated)