Pinpoint Test AI: DTC U3003:17

Adaptive Headlighting

Pinpoint Test AI: DTC U3003:17

Refer to Wiring Diagram Set 60, Instrument Cluster for schematic and connector information. [1][2]Diagrams By Number

Normal Operation

- DTC U3003:17 (Battery Voltage: Circuit Voltage Above Threshold)- sets continuous and on-demand in the Headlamp Control Module (HCM) if the HCM (Headlamp Control Module) detects battery voltage above 16 volts on the voltage input circuit.

This pinpoint test is intended to diagnose the following:

- Charging system concern

- HCM (Headlamp Control Module)

PINPOINT TEST AI : DTC U3003:17

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

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

AI1 CHECK FOR DTC B1317, B1676, P0563 (PCM) OR U3003:17 SET IN OTHER MODULES

- Ignition ON.

- Enter the following diagnostic mode on the scan tool: Self-Test.

- Retrieve the continuous memory DTCs from all modules.

Is DTC B1317, B1676, P0563 (PCM) or U3003:17 set in more than one module?

Yes
REFER to Charging System to diagnose an overcharging condition.

No
GO to AI2.

AI2 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 to diagnose an overcharging condition.

No
GO to AI3.

AI3 RECHECK FOR DTC U3003:17

- Turn the engine off.

- Ignition ON.

- Enter the following diagnostic mode on the scan tool: HCM (Headlamp Control Module) Self-Test.

- Clear the DTCs and repeat the HCM (Headlamp Control Module) on-demand self-test..

Is DTC U3003:17 present?

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

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