DTC Troubleshooting: P0970 (29-3)

DTC P0970:

Problem in A/T Clutch Pressure Control Solenoid Valve C Circuit

• Before you troubleshoot, record all freeze data and any on-board snapshot, and review General Troubleshooting Information.
• 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 P0970 recurs. Is DTC P0970 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 C 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 C at 1.0 A in Clutch Pressure Control Solenoid Control menu.

5.

Monitor the OBD status for P0970 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 C 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 C connector.

8.	Measure resistance between A/T clutch pressure control solenoid valve C 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 C, then go to 12.

9.

Check for continuity between A/T clutch pressure control solenoid valve C 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 C 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 C 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 B25 and A/T clutch pressure control solenoid valve C, 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 P0970 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.