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.

1. Clear the DTC with the HDS.

1. Check that DTC P0971 recurs.

Is DTC P0971 indicated?

YES | - | Go to Step 6 .
NO | - | Go to Step 3 .

1. Choose Clutch Pressure Control Solenoid Control in Miscellaneous Test Menu, and test the A/T clutch pressure control solenoid valve C with the HDS.

1. Drive with the A/T clutch pressure control solenoid valve C at 0.2 A in Clutch Pressure Control Solenoid Control menu.

1. 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.■

1. Turn the ignition switch OFF.

1. Disconnect the A/T clutch pressure control solenoid valve C connector.

1. 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 .

1. 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 .

1. Clear the DTC with the HDS.

1. Test-drive the vehicle for several minutes in the D position in all five gears.

1. 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.■