Diagnostic Test

CHECK FOR AN INTERMITTENT CONDITION
1. Turn the ignition on.
2. Turn the radio on.
3. With the scan tool, erase the Amplifier DTCs.
4. With the scan tool, reset the amplifier.
5. With the scan tool, read the active Amplifier DTCs.
  Does the scan tool display active: B1488-CABIN EQ MISMATCH PERFORMANCE?
  
  Yes
  - Go to step 2
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the SYSTEM WIRING DIAGRAMS as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and poor pin fit.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
CHECK AMPLIFIER BUSSED INPUTS/OUTPUTS
1. With the scan tool in Amplifier Data Display, read the Cabin EQ# settings in the Bussed Inputs and Bussed Outputs parts.
  NOTE: The Cabin EQ# settings in the Inputs/Outputs part should match one another. The Cabin EQ# in the Inputs part is the information that is received from the TIPM. The Cabin EQ# in the Outputs part is the information that is Stored in the Amplifier's memory.
2. The Cabin EQ# settings are as follows:
  - $51: Premium 1 (w/o Subwoofer)
  - $52: Premium 2 (with Subwoofer)
  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 DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Go to step 3
VERIFY COMMUNICATION WITH TOTALLY INTEGRATED POWER MODULE
1. With the scan tool in ECU VIEW, read the active modules on the bus.
  Does the scan tool show the Totally Integrated Power Module active on the bus?
  
  Yes
  - Go to step 4
  No
  - Refer to Non-DTC Diagnostics/Communication - Diagnosis and Testing and perform the No Response from TIPM diagnostic procedure.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
CHECK TOTALLY INTEGRATED POWER MODULE FOR ACTIVE DTCs
1. With the scan tool, erase the TIPM DTCs.
2. Turn the ignition off. Wait approximately 10 seconds.
3. Turn the ignition on.
4. With the scan tool, read the TIPM DTCs.
  Are any active DTCs present?
  
  Yes
  - Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Diagnosis and Testing and perform the appropriate diagnostic procedure.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the Amplifier in accordance with the service information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .