Circuit Description
Each time the ignition cycles from OFF to ON, the radio receives VIN data over the class 2 communication circuit. If the VIN data in the radio memory matches the VIN data it receives over the class 2 communication circuit, the radio will operate normally.
Conditions for Running the DTC
| • | The DTC is run when the radio is turned from OFF to ON. |
| • | Battery voltage is between 9 and 16 volts. |
Conditions for Setting the DTC
Installing a radio from a different vehicle platform or installing a new powertrain control module (PCM) or body control module (BCM) and not entering the correct setup information with the scan tool.
Action Taken When the DTC Sets
The radio does not function properly. The radio displays "CAL".
Conditions for Clearing the DTC
| • | Installing a radio from another vehicle of the same platform or a new radio of the same platform. |
| • | Installing a new PCM or BCM setup properly with the correct VIN for that vehicle. |
The DTC status will turn to history when the above criteria is met. The scan tool can now clear the history DTC or it will automatically clear after 100 consecutive fault free ignition cycles.
Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
-
Clear all DTCs and cycle the ignition to check that the DTC did not falsely set.
-
Clear all DTCs after the repair procedure is complete.
Step | Action | Yes | No |
|---|---|---|---|
1 | Did you perform the Radio/Audio System Diagnostic System Check? | Go to Step 2 | |
Does the DTC reset? | Go to Step 3 | System OK | |
Replace the radio and perform the setup procedure for the radio. Refer to Radio Replacement and to Radio Setup . Did you complete the replacement? | Go to Step 4 | -- | |
4 | Operate the system in order to verify the repair. Does the system operate properly? | System OK | Go to Symptoms |
