Pinpoint Test O : Lost Communication
WARNING: This page is about a different variant/trim than selected.
- O1 CHECK THE COMMUNICATION NETWORK
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Carry out the network test.
Did the BCM pass the network test?
Yes GO to O2. No REFER to Module Communications Network to diagnose no communication with the BCM. - O2 CHECK THE TCM CMDTCs
- Enter the following diagnostic mode on the scan tool: Carry out the self-test and retrieve DTCs.
- Clear the DTCs.
- Wait 10 seconds.
- Repeat the self-test.
Is DTC U0140 present?
Yes GO to O3. 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. - O3 RETRIEVE THE RECORDED DTCs FROM THE TCM SELF-TEST
- Check for recorded DTCs from the TCM self-test.
Are DTCs P0702, P0882, P0883, P0884 or P1397 present?
Yes REFER to Charging System . No GO to O4. - O4 RETRIEVE THE RECORDED DTCs FROM THE ABS SELF-TEST
- Check for recorded DTCs from the BCM self-test.
Are DTCs U0303:16 or U0303:17 present?
Yes REFER to Multifunction Electronic Modules . No GO to O5. - O5 CHECK FOR DTC U0140 SET IN OTHER MODULES
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Carry out the self-test for all modules.
- Retrieve the CMDTCs from all modules.
Is DTC U0140 set in the ABS or in the IPC ?
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, REFER to Multifunction Electronic Modules . No 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 TCM. REFER to Transmission Control Module (TCM) . PROGRAM the TCM with the latest calibration level. PERFORM the Solenoid Body Strategy Download procedure. REFER to Solenoid Body Strategy Download .