Diagnostic Routine N

Diagnostic Routine N

Diagnostic Overview

U3003:17

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions






Pinpoint Test

1. CHECK FOR HIGH VOLTAGE DTCs (Diagnostic Trouble Codes) SET IN OTHER MODULES

1. Ignition ON.

2. Using a scan tool, retrieve all continuous DTCs (Diagnostic Trouble Codes) from all modules.

Are high voltage DTCs (Diagnostic Trouble Codes) (e.g. B1676, P0563, U3003:17) set in more than one module?






2. CHECK THE BATTERY VOLTAGE

1. Turn off all interior/exterior lights and accessories.

2. Start and run the engine at approximately 2,000 RPM (Revolutions Per Minute) for 3 minutes while monitoring the battery voltage.

Does the battery voltage rise to 15.5 volts or higher?






3. RECHECK FOR DTC (Diagnostic Trouble Code) U3003:17

1. Turn the engine off.

2. Ignition ON.

3. Using a scan tool, clear the continuous memory ACM (Audio Control Module) DTCs (Diagnostic Trouble Codes).

4. Using a scan tool, perform the ACM (Audio Control Module) self-test.

Is DTC U3003:17 present?






4. 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?