Pinpoint Test H: U3003:1C: U3003:1C

NOTE: DTC U3003:1C may be stored in the module memory due to past battery charging or vehicle jump starting events.

H1 CHECK FOR BATTERY VOLTAGE DIAGNOSTIC TROUBLE CODES (DTCS) SET IN OTHER MODULES
- Ignition ON.
- Retrieve the Continuous Memory Diagnostic trouble codes (CMDTCs) from all modules.
Is DTC U3003:16, U3003:1C, P0563 or P0626 set in more than one module?
- Yes : REFER to: CHARGING SYSTEM .
- No : GO to H2
H2 CHECK THE BATTERY VOLTAGE
- Turn off all the 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 .
- No : GO to H3
H3 RECHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U3003:1C
- Engine OFF.
- Ignition ON.
- Clear the HUD module Continuous Memory Diagnostic Trouble Codes (CMDTCs).
- Using a diagnostic scan tool, perform the HUD module self-test.
Is DTC U3003:1C present?
- Yes : INSTALL a new HUD module.
  REFER to: HEAD UP DISPLAY (HUD) MODULE .
- 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.