DTC Troubleshooting: P0966 (23-3)

DTC P0966:  Problem in A/T Clutch Pressure Control Solenoid Valve B Circuit

NOTE:

1.Clear the DTC with the HDS.

2.Check that DTC P0966 recurs.

Is DTC P0966 indicated?


YES - Go to 6.


NO - Go to 3.


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

Is the system normal?


YES - Go to 4.


NO - Go to 6.


4.Drive with the A/T clutch pressure control solenoid valve B at 1.0 A in Clutch Pressure Control Solenoid Control menu.

5.Monitor the OBD status for P0966 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.

Does the result indicate FAILED?


YES - Go to 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 B and the PCM. If the tester indicates NOT COMPLETED, return to 3 and recheck.n


6.Turn the ignition switch OFF.

7.Disconnect the A/T clutch pressure control solenoid valve B connector.

8.Measure resistance between A/T clutch pressure control solenoid valve B connector terminals No. 1 and No. 2.

 

Is there 3-10 W?


YES - Go to 9.


NO - Replace the A/T clutch pressure control solenoid valve B, then go to 12.


9.Check for continuity between A/T clutch pressure control solenoid valve B connector terminal No. 2 and body ground.

 

Is there continuity?


YES - Go to 10.


NO - Repair open in the wire between the A/T clutch pressure control solenoid valve B and ground (G101), or repair poor ground (G101), then go to 12.

10.Turn the ignition switch ON (II).

11.Measure voltage between A/T clutch pressure control solenoid valve B connector terminals No. 1 and No. 2.

 

Is there voltage?


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.n


NO - Repair open or a short in the wire between PCM connector terminal B44 and A/T clutch pressure control solenoid valve B, then go to 12.

12.Clear the DTC with the HDS.

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

14.Monitor the OBD status for P0966 in the DTCs/Freeze Data in A/T Mode Menu for a pass/fail.

Does the result indicate PASSED?


YES - Troubleshooting is complete.n


NO - Return to 6 and recheck.