P2770
DTC P2770: Open in Torque Converter Clutch Solenoid Valve CircuitNOTE:
^ Record all freeze data and review the 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. Check that DTC P2770 recurs.
Is DTC P2770 indicated?
YES-Go to step 5.
NO-Go to step 3.
3. Choose Lockup Solenoid Test in Miscellaneous Test Menu, and test the torque Converter clutch solenoid valve with the HDS.
4. Check the OBD status in DTC Monitor Tool from DTCs/Freeze Data in A/T Mode Menu for a pass/fail test of code P2770.
Did the result indicate a fail?
YES-Go to step 5.
NO-Intermittent failure, the system is OK at this time. If the tester indicates NOT COMPLETE, return to step 3 and recheck.
5. Turn the ignition switch OFF.
6. Jump the SCS line with the HDS.
7. Disconnect PCM connectors B (44P) and C (44P).
8. Measure the resistance between PCM connector terminals B44 and B43 or C40.
Terminal side of female terminals
Is there 12 - 25 Ohms?
YES-Check for loose or poor connections at PCM connector terminal B44. If the connections are 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 9.
9. Inspect torque converter clutch solenoid valve.
Is torque converter clutch solenoid valve OK?
YES-Go to step 10.
NO-Replace torque converter clutch solenoid valve, then go to step 12.
10. Check for continuity between torque converter clutch solenoid valve connector terminal No. 1 and body ground.
Wire side of female terminals
Is there continuity?
YES-Repair open in the wire between PCM connector terminal B44 and torque converter clutch solenoid valve, then go to step 13.
NO-Repair open in the wire between torque converter clutch solenoid valve and ground (G151), or repair poor ground (G151), then go to step 13.
11. Clear the DTC with the HDS.
12. Test-drive the vehicle for several minutes under the same conditions as those indicated by the freeze data.
13. Check the OBD status in DTC Monitor Tool from DTCs/Freeze Data in A/T Mode Menu for a pass/fail test of code P2770.
Did the result indicate a pass?
YES-The problem has been corrected.
NO-Return to step 1 and recheck.