DTC Troubleshooting
DTC P2769: Short in Torque Converter Clutch Solenoid Valve CircuitNOTE:
^ Before you troubleshoot, record all freeze data and any on-board snapshot, and review General Troubleshooting Information.
^ This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
1. Clear the DTC with the HDS.
2. Start the engine in P, and warm it up to normal operating temperature (the radiator fan comes on). Test-drive the vehicle at a constant speed of 37 mph (60 km/h) in D, in 5th gear for at least 1 second.
3. Check that DTC P2769 recurs.
Is DTC P2769 indicated?
YES - Go to step 7.
NO - Go to step 4.
4. Select LOCKUP SOLENOID TEST in MISCELLANEOUS TEST MENU, and test TORQUE CONVERTER CLUTCH SOLENOID VALVE with the HDS.
Does the screen indicate NORMAL?
YES - Go to step 5.
NO - Go to step 7.
5. Start the engine in P, and warm it up to normal operating temperature (the radiator fan comes on). Test-drive the vehicle at a constant speed of 37 mph (60 km/h) in D, in 5th gear for at least 1 second.
6. Monitor the OBD STATUS for P2769 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES - Intermittent failure, the system is OK at this time. Check LC (YEL) wire for an intermittent short to ground between torque converter clutch solenoid valve and the PCM.
NO - If the screen indicates FAILED, go to step 7. If the screen indicates NOT COMPLETED, return to step 4 and recheck.
7. Turn the ignition switch to LOCK (0).
8. Jump the SCS line with the HDS.
9. Disconnect PCM connectors B (44P) and C (44P).
10. Measure the resistance between PCM connector terminals B44 and B43 or C40.
Is there less than 12 ohms?
YES - Go to step 11.
NO - Go to step 21.
11. Disconnect the shift solenoid harness connector.
12. Check for continuity between PCM connector terminals B44 and B43 or C40.
Is there continuity?
YES - Repair a short to ground in the wire between PCM connector terminal B44 and the shift solenoid harness connector, then go to step 15.
NO - Go to step 13.
13. Inspect the torque converter clutch solenoid valve and the shift solenoid harness.
Are torque converter clutch solenoid valve and the harness OK?
YES - Go to step 21.
NO - Go to step 14.
14. Replace the torque converter clutch solenoid valve or the shift solenoid harness.
15. Reconnect all connectors.
16. Turn the ignition switch to ON (II).
17. Clear the DTC with the HDS.
18. Start the engine in P, and warm it up to normal operating temperature (the radiator fan comes on). Test-drive the vehicle at a constant speed of 37 mph (60 km/h) in D, in 5th gear for at least 1 second.
19. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P2769 indicated?
YES - Check for poor connections or loose terminals at the torque converter clutch solenoid valve, the shift solenoid harness, and the PCM, then go to step 1.
NO - If Temporary DTC or DTC P2769 is not indicated, or if any other Temporary DTCs are indicated, go to step 20.
20. Monitor the OBD STATUS for P2769 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES - Troubleshooting is complete. If any other Temporary DTC or DTCs were indicated on step 19, go to the indicated DTCs troubleshooting.
NO - If the screen indicates FAILED, check for poor connections or loose terminals at the torque converter clutch solenoid valve, the shift solenoid harness, and the PCM, then go to step 1. If the screen indicates NOT COMPLETED, go to step 18.
21. Update the PCM if it does not have the latest software, or substitute a known-good PCM.
22. Start the engine in P, and warm it up to normal operating temperature (the radiator fan comes on). Test-drive the vehicle at a constant speed of 37 mph (60 km/h) in D, in 5th gear for at least 1 second.
23. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P2769 indicated?
YES - Check for poor connections or loose terminals at the torque converter clutch solenoid valve, the shift solenoid harness, and the PCM. If the PCM was updated, substitute a known-good PCM, then go to step 22. If the PCM was substituted, go to step 1.
NO - If Temporary DTC or DTC P2769 is not indicated, or if any other Temporary DTCs or DTCs are indicated, go to step 24.
24. Monitor the OBD STATUS for P2769 in the DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM. If any other Temporary DTCs or DTCs were indicated on step 23, go to the indicated DTCs troubleshooting.
NO - If the screen indicates FAILED, check for poor connections or loose terminals at the torque converter clutch solenoid valve, the shift solenoid harness, and the PCM. If the PCM was updated, substitute a known-good PCM, then go to step 22. If the PCM was substituted, go to step 1.1f the screen indicates NOT COMPLETED, go to step 22.