Pinpoint Test O : U3003:16
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.
NOTE:
Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
- O1 RECHECK THE RGTM (REAR GATE TRUNK MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
- Ignition ON.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs)
- Wait 30 seconds.
- Using a diagnostic scan tool, carry out the RGTM self-test.
Is DTC U3003:16 still present?
Yes GO to O2 No The system is operating normally at this time. The DTC may have been set due to a previous low battery voltage condition. - O2 CHECK FOR CHARGING SYSTEM DIAGNOSTIC TROUBLE CODES (DTCS) SET IN OTHER MODULES
- Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.
Is any other battery or charging system related DTC set in other modules?
Yes Diagnose the charging system concern. REFER to CHARGING SYSTEM - GENERAL INFORMATION . No GO to O3 - O3 CHECK THE BATTERY CONDITION AND STATE OF CHARGE
- Ignition OFF.
- Check the battery condition and verify the battery is fully charged. REFER to: Battery .
Is the battery OK and fully charged?
Yes GO to O4 No DIAGNOSE the battery. REFER to: Battery . - O4 CHECK THE RGTM (REAR GATE TRUNK MODULE) POWER_SUPPLY_POWER_VBATT (GATE_PWR_V) PID (PARAMETER IDENTIFICATION)
- Ignition ON.
- Measure and record the voltage at the battery.
- Using a diagnostic scan tool, monitor the RGTM Gate_Pwr_V PID.
Is the voltage within 0.2 volt of the recorded battery voltage?
Yes GO to O7 No GO to O5 - O5 CHECK THE RGTM (REAR GATE TRUNK MODULE) VOLTAGE SUPPLY CIRCUIT FOR HIGH RESISTANCE
- Ignition OFF.
- Disconnect RGTM C4174A .
- Measure:
Positive Lead Measurement / Action Negative Lead C4174A-4 Ground
Is the voltage within 0.2 volt of the recorded battery voltage?
Yes GO to O6 No REPAIR the circuit. - O6 CHECK THE RGTM (REAR GATE TRUNK MODULE) GROUND CIRCUIT FOR HIGH RESISTANCE
- Measure:
Positive Lead Measurement / Action Negative Lead C4174A-1 Ground
Is the resistance less than 3 ohms?
Yes GO to O7 No REPAIR the circuit. - Measure:
- O7 CHECK FOR CORRECT RGTM (REAR GATE TRUNK MODULE) OPERATION
- Disconnect and inspect all RGTM connectors.
- Repair:
- corrosion (install new connectors or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary
- Reconnect all the RGTM connectors and make sure they seat and latch correctly.
- Operate the system and determine if the concern is still present.
Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new RGTM. REFER to: Rear Gate Trunk Module (RGTM) . No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.