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Diagnostic Routine W




Diagnostic Routine W

Diagnostic Overview

U3003:16

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions






Pinpoint Test

1. RECHECK FOR DTC (Diagnostic Trouble Code) U3003:16

1. Ignition ON.

2. Using a scan tool, clear the DTCs (Diagnostic Trouble Codes) for the module in question.

3. Wait 15 seconds.

4. Using a scan tool, repeat the self-test.

Is DTC (Diagnostic Trouble Code) U3003:16 still present?






2. CHECK FOR CHARGING SYSTEM DTCs (Diagnostic Trouble Codes) IN THE PCM (Powertrain Control Module)

1. Using the scan tool, retrieve the continuous memory DTCs (Diagnostic Trouble Codes) from all modules.

Are any voltage-related DTCs (Diagnostic Trouble Codes) set in the PCM (Powertrain Control Module)?






3. CHECK THE BATTERY CONDITION AND STATE OF CHARGE

1. Check the battery condition and verify that the battery is fully charged. REFER to Diagnostic Routine A: Battery Condition Test Pinpoint Tests.

Is the battery OK and fully charged?






4. CHECK THE MODULE VOLTAGE SUPPLY

1. Ignition OFF.

2. Measure and record the voltage at the battery.

3. Disconnect the audio system module setting DTC (Diagnostic Trouble Code) U3003:16.

4. Ignition ON.

5. Measure the voltage between the module setting DTC (Diagnostic Trouble Code) U3003:16 and ground.

6. For the ACM (Audio Control Module), measure:





7. For the APIM (Accessory Protocol Interface Module), measure:





8. For the audio DSP (Digital Signal Processing) module, measure:





9. For the FCIM (Front Controls Interface Module), measure:





10. For the GPSM (Global Positioning System Module), measure:








Is the voltage within 0.2 volt of the recorded battery voltage?






5. CHECK THE SUSPECT MODULE GROUND CIRCUIT FOR CONTINUITY

1. Measure the voltage at the suspect module.

2. For the ACM (Audio Control Module), measure:





3. For the APIM (Accessory Protocol Interface Module), measure:





4. For the audio DSP (Digital Signal Processing) module, measure:





5. For the FCIM (Front Controls Interface Module), measure:





6. For the GPSM (Global Positioning System Module), measure:








Is the suspect module voltage greater than 11 volts?






6. CHECK FOR CORRECT ACM (Audio Control Module) OPERATION

1. Disconnect and inspect all the ACM (Audio Control Module) connectors.

2. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

3. Reconnect the ACM (Audio Control Module) connectors. Make sure they seat and latch correctly.

4. Operate the system and determine if the concern is still present.

Is the concern still present?






7. CHECK FOR CORRECT APIM (Accessory Protocol Interface Module) OPERATION

1. Disconnect and inspect the APIM (Accessory Protocol Interface Module) connector.

2. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

3. Reconnect the APIM (Accessory Protocol Interface Module) connector. Make sure it seats and latches correctly.

4. Wait 2 minutes for the APIM (Accessory Protocol Interface Module) to re-initialize.

5. Operate the system and determine if the concern is still present.

Is the concern still present?






8. CHECK FOR CORRECT FCIM (Front Controls Interface Module) OPERATION

1. Disconnect and inspect the FCIM (Front Controls Interface Module) connector.

2. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

3. Reconnect the FCIM (Front Controls Interface Module) connector. Make sure it seats and latches correctly.

4. Operate the system and determine if the concern is still present.

Is the concern still present?






9. CHECK FOR CORRECT GPSM (Global Positioning System Module) OPERATION

1. Disconnect and inspect the GPSM (Global Positioning System Module) connector.

2. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

3. Reconnect the GPSM (Global Positioning System Module) connector. Make sure it seats and latches correctly.

4. Operate the system and determine if the concern is still present.

Is the concern still present?






10. CHECK FOR CORRECT AUDIO DSP (Digital Signal Processing) MODULE OPERATION

1. Disconnect and inspect all the audio DSP (Digital Signal Processing) module connectors.

2. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

3. Reconnect the audio DSP (Digital Signal Processing) module connectors. Make sure they seat and latch correctly.

4. Operate the system and determine if the concern is still present.

Is the concern still present?





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