Pinpoint Test J : DTC U0102
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.
- J1 CHECK THE COMMUNICATION NETWORK
- Ignition ON.
- Using the diagnostic scan tool, perform the network test.
Does the PCM pass the network test?
Yes GO to J2 No To diagnose the module does not respond to the scan tool, REFER to: Communications Network . - J2 CHECK FOR GSM (GEAR SHIFT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
- Clear all DTCs.
- Using the diagnostic scan tool, perform the GSM self-test.
Is DTC U0102 present?
Yes GO to J3 No The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition. - J3 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE GSM (GEAR SHIFT MODULE) SELF-TEST
- Check for DTCs from the self-test.
Are any GSM DTCs present?
Yes REFER to DTC Chart - GSM . No GO to J4 - J4 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE TCCM (TRANSFER CASE CONTROL MODULE) SELF-TEST
- Check for DTCs from the self-test.
Are DTCs P0562, P0563 and/or P1397 present?
Yes REFER to: Charging System . No GO to J5 - J5 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0102 SET IN OTHER MODULES
- Using the diagnostic scan tool, perform the self-test for all modules.
- Retrieve the DTCs from all modules.
Is DTC U0102 present in the ABS or IPC modules?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, discontinue this test and follow TSB instructions. If no TSBs address this concern, INSTALL a new TCCM. REFER to: Four-Wheel Drive Systems - Vehicles With: 1-Speed Torque On Demand Transfer Case . REFER to: Four-Wheel Drive Systems - Vehicles With: 2-Speed Torque On Demand Transfer Case . No If the reporting module is the GSM, INSTALL a new GSM. REFER to: Gear Shift Module (GSM) .