DTC P0970: Pressure Control Solenoid "C" Control 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 |
|---|---|---|---|
| P0970 Pressure Control Solenoid "C" Control 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 P0970 Pressure Control Solenoid "C" Control Circuit Low Is DTC P0970 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 clutch 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 clutch 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. 5 Test point 2 Body ground Is there 4.7-5.9 Ω?
YES
The CVT clutch 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 P0970 goes away and the PCM was updated, troubleshooting is complete. If DTC P0970 goes away and the PCM was substituted, replace the original PCM .
NO
Go to step 3.
- 3. Shorted wire check (CPC 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. 5 Test point 2 Body ground Is there continuity?
YES
Repair a short to body ground in the CPC LS wire between the solenoid wire harness A 8P connector and the PCM.
NO
Go to step 4.
- 4. CVT clutch pressure control solenoid valve internal resistance check:
1. Remove the lower valve body .
2. Disconnect the following connector.
CVT clutch pressure control solenoid valve 2P connector 3. Measure the resistance between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Lower valve body: removed CVT clutch pressure control solenoid valve 2P connector: disconnected Test point 1 CVT clutch pressure control solenoid valve 2P connector No. 1 Test point 2 CVT clutch pressure control solenoid valve 2P connector No. 2 Is there 4.7-5.9 Ω?
YES
Go to step 5.
NO
Faulty CVT clutch pressure control solenoid valve. Replace the lower valve body .
- 5. Determine shorted wire in either solenoid wire harness A or B (CPC+ line):
1. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Lower valve body: removed Solenoid wire harness B 6P connector: disconnected CVT clutch pressure control solenoid valve 2P connector: disconnected Test point 1 Solenoid wire harness B 6P connector No. 5 Test point 2 Body ground (lower valve body) Is there continuity?
YES
Repair a short to body ground in the CPC+ wire between the CVT clutch pressure control solenoid valve and the solenoid wire harness B 6P connector.
NO
Repair a short to body ground in the CPC+ wire between the solenoid wire harness A 6P connector and the solenoid wire harness A 8P connector.