Diagnostic Test
- CHECK FOR AN ACTIVE DTC
- Turn the ignition on and open one of the front doors.NOTE:
A front door must remain open whenever checking or erasing Amplifier (AMP) DTCs.
- Turn the radio on.
- With the scan tool, erase Amplifier DTCs.
- With the scan tool, reset the Amplifier.
- With the scan tool, read Amplifier DTCs.
Did the DTC return?
Yes
- Go To 2
No
- Perform the TESTING FOR AN INTERMITTENT CONDITION procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
- Turn the ignition on and open one of the front doors.
- CHECK THE CABIN EQUALIZATION CURVE NUMBER
- With the scan tool in the BCM ECU Details Tab, Configuration button, record the Cabin Equalization Curve number.
- With the scan tool in the AMP ECU Details Tab, Configuration button, record the True value.NOTE:
The Cabin EQ Curve value found in the BCM should match the True value found in the AMP.
Do the Cabin EQ settings match one another?
Yes
- Replace the Amplifier in accordance to the service information. Refer to AMPLIFIER, REMOVAL AND INSTALLATION .
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Go To 3
- VERIFY COMMUNICATION WITH BCM
- With the scan tool, read the active modules on the BUS.
Does the scan tool show the BCM active on the BUS?
Yes
- Go To 4
No
- Refer to DIAGNOSIS AND TESTING and perform the No Response From Body Control Module (BCM) diagnostic procedure.
- With the scan tool, read the active modules on the BUS.
- CHECK BCM FOR ACTIVE DTCs
- With the scan tool, erase BCM DTCs.
- Turn the ignition off. Wait approximately 10 seconds.
- Turn the ignition on.
- With the scan tool, read BCM DTCs and record on the repair order.
Are any active DTCs present?
Yes
- Refer to BODY CONTROL MODULE (BCM) - DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.
No
- Replace the Body Control Module (BCM) in accordance with the Service Information. Refer to MODULE, BODY CONTROL (BCM), REMOVAL AND INSTALLATION .
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .