DTC Troubleshooting: P0971 (29-4)

DTC P0971: Problem in A/T Clutch Pressure Control Solenoid Valve C 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. Check that DTC P0971 recurs. Is DTC P0971 indicated?
YES | - | Go to Step 6 .
NO | - | Go to Step 3 .
Choose Clutch Pressure Control Solenoid Control in Miscellaneous Test Menu, and test the A/T clutch pressure control solenoid valve C with the HDS. Drive with the A/T clutch pressure control solenoid valve C at 0.2 A in Clutch Pressure Control Solenoid Control menu. Monitor the OBD status for P0971 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail. Does the result indicate a fail?
YES | - | Go to Step 6 .
NO | - | Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/T clutch pressure control solenoid valve C and PCM. If the tester indicates NOT COMPLETE, return to Step 3 and recheck.■
Turn the ignition switch OFF. Disconnect the A/T clutch pressure control solenoid valve C connector. Measure A/T clutch pressure control solenoid valve C resistance at the solenoid connector. Is there 3−10 Ω?
YES | - | Go to Step 9 .
NO | - | Replace the A/T clutch pressure control solenoid valve C, then go to Step 10 .

Check for continuity between A/T clutch pressure control solenoid valve C connector terminal No. 2 and body ground. Is there continuity?
YES | - | 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 | - | Repair open in the wire between the A/T clutch pressure control solenoid valve C and ground (G101), or repair poor ground (G101), then go to Step 10 .
Clear the DTC with the HDS. Test-drive the vehicle for several minutes in the D position in all five gears. Monitor the OBD status for P0971 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail. Does the result indicate a pass?
YES | - | The problem has been corrected.■
NO | - | Return to Step 1 and recheck.■