Pinpoint Test B : U3003:17
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
- B1 CHECK FOR HIGH VOLTAGE DIAGNOSTIC TROUBLE CODES (DTCS) SET IN OTHER MODULES
- Using a diagnostic scan tool, retrieve all Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Is DTC B1317, B1318, B1676, U3003:16 or U3003:17 present in one or more modules AND are any charging system Diagnostic Trouble Codes (DTCs) present in the PCM?
Yes DIAGNOSE the vehicle charging concern. REFER to:CHARGING SYSTEM - GENERAL INFORMATION . No GO to B2 - B2 CHECK THE BATTERY VOLTAGE
- Turn off all interior lights, exterior lights and accessories.
-
NOTE: Do not allow the engine speed to increase above 2, 000 RPM while performing this step or the generator may self-excite and result in default charging system output voltage. If engine speed goes above 2, 000 RPM, turn the engine off and restart the engine before performing this step.
Start and run the engine at approximately 1, 500 RPM for 3 minutes while monitoring the battery voltage.
Is the battery voltage between 13 and 15.2 volts?
Yes GO to B3 No DIAGNOSE the overcharging condition. REFER to:CHARGING SYSTEM - GENERAL INFORMATION . - B3 RECHECK THE VDM (VEHICLE DYNAMICS CONTROL MODULE) FOR DTC (DIAGNOSTIC TROUBLE CODE) U3003:17
- Ignition OFF.
- Ignition ON.
- Using a diagnostic scan tool, clear the VDM Diagnostic Trouble Codes (DTCs).
- Ignition OFF.
- Ignition ON.
- Using a diagnostic scan tool, carry out the VDM self-test.
Is DTC U3003:17 still present?
Yes GO to B4 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. - B4 VERIFY ALL WIRING CONNECTIONS
- Ignition OFF.
- Disconnect BCM C2280C .
- Using a good light source, inspect all disconnected electrical connectors for the following:
- corrosion - install new connector or terminal and clean the module pins
- damaged or bent pins - install new terminals or pins
- pushed-out pins - install new pins as necessary
- spread terminals - install new terminals as necessary
Are the connectors free of corrosion, damaged pins, bent pins, pushed-out pins and spread terminals?
Yes GO to B5 No REPAIR the connector or terminals. Refer to Wiring Diagram Connector Repair Procedures for schematic and connector information. - B5 CHECK FOR CORRECT VDM (VEHICLE DYNAMICS CONTROL MODULE) OPERATION
- Connect BCM C2280C . Make sure it seats and latches correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no Technical Service Bulletins (TSBs) exist for this concern, INSTALL a new VDM module. REFER to:Vehicle Dynamics Control Module (VDM) . No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.