Diagnostic Routine J

Diagnostic Routine J

Diagnostic Overview

DTC U3003:62

Refer to Wiring Diagram Set 10 for schematic and connector information Electrical Diagrams.

Refer to Wiring Diagram Set 13 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

DTC Fault Trigger Conditions







Pinpoint Test

NOTE: DTC (Diagnostic Trouble Code) U3003:62 may be stored in the module memory due to previous battery charging or vehicle jump starting events.

1. RECHECK THE RFA (Remote Function Actuator) MODULE DTCs (Diagnostic Trouble Codes)

1. Ignition OFF.

2. Ignition ON.

3. Using a scan tool, perform RFA (Remote Function Actuator) module self-test.

4. Clear the DTCs (Diagnostic Trouble Codes). Repeat the RFA (Remote Function Actuator) module self-test.

Is DTC (Diagnostic Trouble Code) U3003:62 still present?








2. CHECK FOR CHARGING SYSTEM DTCs (Diagnostic Trouble Codes) IN THE PCM (Powertrain Control Module)

1. Using a scan tool, perform PCM (Powertrain Control Module) KOEO (Key ON Engine OFF) self-test.

2. Retrieve the continuous memory DTCs (Diagnostic Trouble Codes) from the PCM (Powertrain Control Module).

Are any charging system DTCs (Diagnostic Trouble Codes) set in the PCM (Powertrain Control Module)?








3. CHECK FOR DTCs (Diagnostic Trouble Codes) B1317, B1318 B1676, P0563, U3003:16 OR U3003:17 SET IN OTHER MODULES

1. Using a scan tool, retrieve the continuous memory DTCs (Diagnostic Trouble Codes) from all modules.

Is DTC (Diagnostic Trouble Code) B1317, B1318, B1676, P0563 (PCM (Powertrain Control Module)), U3003:16 or U3003:17 set in any other module?








4. CHECK THE BATTERY VOLTAGE

1. Turn off all interior/exterior lights and accessories.

2. Start and run the engine at approximately 2,000 RPM (Revolutions Per Minute) for 3 minutes while monitoring the battery voltage.

Does the battery voltage rise to 15 volts or higher?








5. CHECK THE BATTERY CONDITION AND STATE OF CHARGE

1. Ignition OFF.

2. Check the battery condition and verify the battery is fully charged. REFER to Battery, Mounting and Cables .

Is the battery OK and fully charged?








6. CHECK THE RFA (Remote Function Actuator) MODULE VOLTAGE PID (Parameter Identification)

1. Ignition ON.

2. Measure and record the voltage at the battery.

3. Using a scan tool, view RFA (Remote Function Actuator) module voltage PID (Parameter Identification) (ECU_Pwr_Sup).

Is the voltage within 0.2 volt of the recorded battery voltage?








7. CHECK THE RFA (Remote Function Actuator) MODULE VOLTAGE SUPPLY

1. Ignition OFF.

2. Disconnect: RFA (Remote Function Actuator) Module C2153C.

3. Ignition ON.

4. Measure:





Is the voltage within 0.2 volt of the recorded battery voltage?








8. CHECK THE RFA (Remote Function Actuator) MODULE HOT AT ALL TIMES VOLTAGE

1. Measure:





Is the voltage within 0.2 volt of the recorded battery voltage?








9. CHECK THE RFA (Remote Function Actuator) MODULE GROUND CIRCUIT FOR HIGH RESISTANCE

1. Ignition OFF.

2. Measure:





Is the resistance less than 3 ohms?








10. CHECK FOR CORRECT RFA (Remote Function Actuator) MODULE OPERATION

1. Disconnect the RFA (Remote Function Actuator) connectors.

2. Repair:

- corrosion (install new connector or terminals- clean module pins)
- damaged pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

3. Reconnect the RFA (Remote Function Actuator) connectors and make sure they seat and latch correctly.

4. Operate the system and determine if the concern is still present.

Is the concern still present?