P0966
DTC P0966: CVT Driven Pulley Pressure Control Valve Circuit Low Voltage2004-2005 AT-PZEV Models
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.
2. Check that DTC P0966 recurs.
Is DTC P0966 indicated?
YES- Go to step 3.
NO- Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the solenoid harness connector, TCM and the CVT driven pulley pressure control valve.
3. Turn the ignition switch OFF.
4. Disconnect the solenoid harness connector.
5. Measure the resistance between solenoid harness connector terminals No. 2 and No. 6.
Is there 3.8 - 6.8 Ohms?
YES- Go to step 6.
NO- Remove the lower valve body, and check for an open or a short in the solenoid harness. If the wire is OK, replace the CVT driven pulley pressure control valve, then go to step 11.
6. Disconnect TCM connectors B (24P) and C (17P).
7. Check for continuity between TCM connector terminal B16 and body ground, and between C1 and body ground.
Is there continuity?
YES- Repair short to ground in the wire between TCM connector terminals B16 and the solenoid harness connector, or between C1 and the connector.
NO- Go to step 8.
8. Connect the solenoid harness connector.
9. Measure the resistance between TCM connector terminals B16 and C1.
Is there 3.8 - 6.8 Ohms?
YES- Go to step 10.
NO- Repair open in the wire between TCM connector terminal B16 and the solenoid harness connector, or between C1 and the connector.
10. Check for continuity between TCM connector terminals A5 and body ground, A5 and body ground, A23 and body ground, and between A24 and body ground.
Is there continuity?
YES- Update the TCM if it does not have the latest software, or substitute a known-good TCM, then recheck. If the symptom/indication goes away with a known-good TCM, replace the original TCM.
NO- Repair open in the wire between TCM connector terminals A5 A23, A24, and ground (G101), or repair poor ground (G101).
11. Clear the DTC with the HDS.
12. Check that DTC P0966 recurs.
Is DTC P0966 indicated?
YES- Return to step 3 and recheck.
NO- The problem has been corrected.