Diagnostic Test
WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK FOR AN INTERMITTENT CONDITION
- Turn the ignition on and open one of the front doors.NOTE:
A front door must remain open whenever checking or erasing Amplifier 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.
Does the scan tool display active: B1488-00-CABIN EQ MISMATCH PERFORMANCE?
Yes
- Go To 2
No
- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
- Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- Turn the ignition on and open one of the front doors.
- CHECK AMPLIFIER BUSSED INPUTS/SENSORS
- With the scan tool in Amplifier Data Display, read the Cabin Equalization Curve number in the Bussed Inputs and Sensors Sections.NOTE:
The Cabin EQ Curve settings in the Inputs/Sensors section should match one another. The Cabin EQ# in the Inputs section is the information that is received from the BCM. The Cabin EQ in the Sensors section is the information that is Stored in the Amplifier's memory.
Do the Cabin EQ settings match one another?
Yes
- Replace the Amplifier in accordance to the service information.
- Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Go To 3
- With the scan tool in Amplifier Data Display, read the Cabin Equalization Curve number in the Bussed Inputs and Sensors Sections.
- 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 BCM (BODY CONTROL MODULE) 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.
Are any active DTCs present?
Yes
- Refer to DTC INDEX - 2500 HD & 3500 HD article and perform the appropriate diagnostic procedure.
No
- Replace the BCM (Body Control Module) in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .