DTC Troubleshooting: P0966
DTC P0966: CVT Driven Pulley Pressure Control Valve Circuit Low
NOTE:
Before you troubleshoot, review the General Troubleshooting Information.
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:

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:

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.
NOTE: This step must be done to protect the PCM from damage.


?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 ??

     
YES
     
     
     
The CVT driven pulley pressure control solenoid valve is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or replace the original PCM.?
     
NO
     
     
     
Go to step 3.
3.
Shorted wire check (DN LS line):

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:

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 (male terminals) No. 1 :
Test point 2
CVT driven pulley pressure control solenoid valve 2P connector (male terminals) No. 2 :


Is there 5.0?6.3 ??

     
YES
     
     
     
Go to step 5.
     
NO
     
     
     
Faulty CVT driven pulley pressure control solenoid valve. Replace the valve body assembly.?
5.
Determine shorted wire in either solenoid wire harness A or B (DNC+ line):

Determine shorted wire in either solenoid wire harness A or B (DNC+ line)
?1.
Disconnect the following connector.
Solenoid wire harness B 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 B 6P connector: disconnected
Test point 1
Solenoid wire harness A 6P connector (female terminals) 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.?