Pinpoint Test D : The Speed Compensated Volume Does Not Operate Correctly
- D1 CHECK THE SPEED SENSITIVE VOLUME SETTING
- Turn the speed sensitive volume off. Refer to the Owner's Literature.
- Operate the audio system in radio tuner AM/FM mode.
- Drive the vehicle at various speeds and observe the speaker volume.
- Set the speed sensitive volume to maximum compensation. Refer to the Owner's Literature.
- Operate the audio system in radio tuner AM/FM mode.
- Drive the vehicle at various speeds and observe the speaker volume.
Does the volume remain constant with the speed sensitive volume turned off, and increase and decrease with vehicle speed with the speed sensitive volume set to maximum?
Yes The system is operating correctly at this time. INSTRUCT the customer in the correct usage of the speed sensitive volume feature. No GO to D2. - D2 CHECK FOR DTC U0155:00 OR U0238:00
- Using a diagnostic scan tool, retrieve all CMDTCs.
Is DTC U0155:00 or U238:00 retrieved in any audio system module?
Yes For DTC U0155:00, GO to Pinpoint Test AD . For DTC U0238:00, GO to Pinpoint Test AG . No GO to D3. - D3 CHECK FOR CORRECT AUDIO DSP MODULE OPERATION
- Ignition OFF.
- Disconnect and inspect all the audio DSP module connectors.
- Repair:
- Corrosion (clean module pins or install new connectors or terminals)
- Damaged or bent pins (install new terminals or pins)
- Pushed-out pins (install new pins as necessary)
- Reconnect the audio DSP module connectors. Make sure they seat and latch correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new audio DSP module. Refer to Audio Digital Signal Processing (DSP) Module . No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.