P2770
DTC P2770: Open in Torque Converter Clutch Solenoid Valve Circuit2004-2005 Models
NOTE:
^ Record all freeze data and review General Troubleshooting Information before you troubleshoot.
^ 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, and warm it up to normal operating temperature (the radiator fan comes on). Test-drive the vehicle for several minutes in the D position through all five gears.
3. Check that DTC P2770 recurs.
Is DTC P2770 indicated?
YES - Go to Step 7.
NO - Go to step 4.
4. Choose Lockup Solenoid Test in Miscellaneous Test Menu, and test the torque converter clutch solenoid valve with the HDS.
Does the result indicate FAILED?
YES - Go to step 5.
NO - If the tester indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the torque converter clutch solenoid valve and PCM. If the tester indicates NOT COMPLETED, return to step 4 and recheck.
5. Start the engine, and warm it up to normal operating temperature (the radiator fan comes on). Test-drive the vehicle for several minutes in the D position through all five gears.
6. Monitor the OBD status for P2770 with the DTC Monitor Tool in DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate FAILED?
YES - Go to Step 7.
NO - If the tester indicates PASSED, intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the torque converter clutch solenoid valve and PCM. If the tester indicates NOT COMPLETED, return to step 4 and recheck.
7. Turn the ignition switch OFF.
8. Jump the SCS line with the HDS.
9. Disconnect PCM connectors C (22P) and E (31P).
10. Measure the resistance between PCM connector terminals C6 and E3.
Is there 12 - 25 Ohms?
YES - Check for loose or poor connections at PCM connector terminal C6. If the connection is OK, update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.
NO - Go to Step 11.
11. Disconnect torque converter clutch solenoid valve connector.
12. Measure the resistance between the torque converter clutch solenoid valve connector terminals.
Is there 12 - 25 Ohms?
YES - Go to Step 13.
NO - Replace the torque converter clutch solenoid valve, then go to step 14.
13. Check for continuity between torque converter clutch solenoid valve connector terminal No. 2 and body ground.
Is there continuity?
YES - Repair open in the wire between PCM connector terminal C6 and torque converter clutch solenoid valve, then go to step 14.
NO - Repair open in the wire between the torque converter clutch solenoid valve and ground (G151), or repair poor ground (G151), then go to step 14.
14. Clear the DTC with the HDS.
15. Start the engine, and warm it to normal operating temperature (the radiator fan comes on). Test-drive the vehicle for several minutes in the D position through all five gears.
16. Monitor the OBD status for P2770 with the DTC Monitor Tool in DTCs/Freeze Data in A/T Mode Menu for a pass/fail.
Does the result indicate PASSED?
YES - Troubleshooting is complete.
NO - Return to step 7 and recheck.