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Test Step 1 - Verify DTC Is Active

NOTE:

Make sure 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 - CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCS

No

Refer to the Stored Lost Communication DTCs procedure in STORED LOST COMMUNICATION DTCS (2009 - 2010) or STORED LOST COMMUNICATION DTCS (2011 & UP) .