Test Step 1 - Verify the Diagnostic Trouble Code DTC is Active
NOTE:
Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.
- With the scan tool, read active DTCs.
Is this DTC active?
Yes
- Go to Test Step 2 Test Step 2 - Test for Any of the Following Active DTCs .
No
- Perform the Stored Lost Communication procedure. Refer to STORED LOST COMMUNICATION DTCS (2009 - 2010) or STORED LOST COMMUNICATION DTCS (2011 & UP) .