Diagnostic Test
- ACTIVE DTC NOTE:
For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.
NOTE:Diagnose and repair any related sensor or communication DTCs in the ACC Module before continuing with this test.
- Start the engine and allow it to reach operating temperature.WARNING:
When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in possible serious or fatal injury.
- With a scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
- Refer to DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.
No
- Refer to STORED LOST COMMUNICATION DTCS and perform the diagnostic procedure.
- Start the engine and allow it to reach operating temperature.