Pinpoint Test T: DTC U3003:17 (Audio Control Module (ACM))

Information and Entertainment System

Pinpoint Test T: DTC U3003:17 (Audio Control Module (ACM))

Refer to Wiring Diagram Set 130, Audio System for schematic and connector information. Diagrams By Number

Normal Operation
- DTC U3003:17 (Battery Voltage: Circuit Voltage Above Threshold) - set by the Audio Control Module (ACM) when the supply voltage is greater than 15.8 volts for more than 250 milliseconds during normal operation or the self-test.

This pinpoint test is intended to diagnose the following:

- Charging system concern
- ACM

PINPOINT TEST T: DTC U3003:17 (ACM)

NOTE: DTC U3003:17 may be stored in the module memory due to past battery charging or vehicle jump starting events.

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T1 CHECK FOR HIGH VOLTAGE DTCs SET IN OTHER MODULES

- Ignition ON.
- Retrieve all continuous DTCs from all modules.
- Are high voltage DTCs (e.g., B1317, U3003:17, P0563) set in more than one module?

Yes
REFER to Charging System Testing and Inspection to diagnose an overcharging condition.

No
GO to T2.

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T2 CHECK THE BATTERY VOLTAGE

- Turn off all interior/exterior lights and accessories.
- Start and run the engine at approximately 2,000 rpm for 3 minutes while monitoring the battery voltage.
- Does the battery voltage rise to 15.5 volts or higher?

Yes
REFER to Charging System Testing and Inspection to diagnose an overcharging condition.

No
GO to T3.

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T3 RECHECK FOR DTC U3003:17

- Ignition OFF.
- Ignition ON.
- Clear the ACM DTCs.
- Repeat the ACM self-test.
- Is DTC U3003:17 present?

Yes
INSTALL a new ACM. REFER to Audio Control Module (ACM) Audio Control Module (ACM). TEST the system for normal operation.

No
The system is operating correctly at this time. The DTC may have been set previously during battery charging or while jump starting the vehicle.

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