DTC P0977: Open in Shift Solenoid Valve B Circuit 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. Clear the DTC with the HDS. Test-drive the vehicle for several minutes in 1st, 2nd and 3rd gears in the D3 position. Check that DTC P0977 recurs. Is DTC P0977 indicated?
YES | - | Go to Step 7 .
NO | - | Go to Step 4 .
Choose Shift Solenoid B in Miscellaneous Test Menu, and test the shift solenoid valve B with the HDS. Test-drive the vehicle for several minutes in 1st, 2nd, and 3rd gears in the D3 position. Monitor the OBD status for P0977 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail. Does the result indicate a fail?
YES | - | Go to Step 7 .
NO | - | Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the shift solenoid valve B and PCM. If the tester indicates NOT COMPLETE, return to Step 4 and recheck.■
Turn the ignition switch OFF. Jump the SCS line with the HDS. Disconnect PCM connectors A (31P) and C (22P). Measure the resistance between PCM connector terminals C4 and A8 or A9. Is there 12−25 Ω?
YES | - | Check for loose or poor connections at PCM connector terminal C4. 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 .
Disconnect the shift solenoid harness connector at the transmission housing. |