DTC P0966: CVT Driven Pulley Pressure Control Valve Circuit Low
NOTE:
- Before you troubleshoot, review the General Troubleshooting Information - Refer to: How to Troubleshoot the Fuel and Emissions SystemsHow to Troubleshoot the CVT System(CVT System) .
- This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
| DTC Description | Confirmed DTC | Pending DTC | Freeze Frame |
|---|---|---|---|
| P0966 CVT Driven Pulley Pressure Control Valve Circuit Low |
- 1. Problem verification:
1. Turn the vehicle to the ON mode.
2. Clear the DTC with the HDS.
3. Start the engine, and wait for at least 1 second.
4. Check for Pending or Confirmed DTCs with the HDS.
DTC Description Confirmed DTC Pending DTC Freeze Frame P0966 CVT Driven Pulley Pressure Control Valve Circuit Low Is DTC P0966 indicated?
YES
The failure is duplicated. Go to step 2.
NO
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals between the CVT driven pulley pressure control solenoid valve and the PCM. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the freeze data/on-board snapshot.
- 2. CVT driven pulley pressure control solenoid valve check:
1. Turn the vehicle to the OFF (LOCK) mode.
2. Jump the SCS line with the HDS, and wait more than 1 minute.
3. Disconnect the following connector.
PCM connector C (51P) 4. Measure the resistance between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode PCM connector C (51P): disconnected Test point 1 PCM connector C (51P) No. 10 Test point 2 Body ground Is there 5.0-6.3 Ω?
YES
The CVT driven pulley pressure control solenoid valve is OK. Update the PCM if it does not have the latest software , or substitute a known-good PCM , then recheck. If DTC P0966 goes away and the PCM was updated, troubleshooting is complete. If DTC P0966 goes away and the PCM was substituted, replace the original PCM .
NO
Go to step 3.
- 3. Shorted wire check (DN LS line):
1. Disconnect the following connector.
Solenoid wire harness A 8P connector 2. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Solenoid wire harness A 8P connector: disconnected PCM connector C (51P): disconnected Test point 1 PCM connector C (51P) No. 10 Test point 2 Body ground Is there continuity?
YES
Repair a short to body ground in the DN LS wire between the solenoid wire harness A 8P connector and the PCM.
NO
Go to step 4.
- 4. CVT driven pulley pressure control solenoid valve internal resistance check:
1. Disconnect the following connector.
CVT driven pulley pressure control solenoid valve 2P connector 2. Measure the resistance between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Solenoid wire harness A 8P connector: disconnected CVT driven pulley pressure control solenoid valve 2P connector: disconnected Test point 1 CVT driven pulley pressure control solenoid valve 2P connector No. 1 Test point 2 CVT driven pulley pressure control solenoid valve 2P connector No. 2 Is there 5.0-6.3 Ω?
YES
Go to step 5.
NO
Faulty CVT driven pulley pressure control solenoid valve. Replace the lower valve body .
- 5. Determine shorted wire in either solenoid wire harness A or B (DNC+ line):
1. Disconnect the following connector.
Solenoid wire harness A 6P connector 2. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Solenoid wire harness A 8P connector: disconnected Solenoid wire harness A 6P connector: disconnected Test point 1 Solenoid wire harness A 6P connector No. 2 Test point 2 Body ground Is there continuity?
YES
Repair a short to body ground in the DNC+ wire between the solenoid wire harness A 6P connector and the solenoid wire harness A 8P connector.
NO
Repair a short to body ground in the DNC+ wire between the CVT driven pulley pressure control solenoid valve and the solenoid wire harness B 6P connector.
