DTC P0970

DTC P0970  : A/T Clutch Pressure Control Solenoid Valve C (Open or Short)

NOTE: Before you troubleshoot, review the General Troubleshooting Information - Refer to: How to Troubleshoot the Fuel and Emissions Systems, or How to Troubleshoot the Brake Booster Pressure Monitoring System (2016 2017 2018 2019 2020), or How to Troubleshoot the Fuel and Emissions Systems(With Auto Idle Stop System) (2016), or How to Troubleshoot the A/T System (2014 2015) .
• This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
• If DTC P0970 is stored in the PCM, the transmission does not shift to any gear other than 1st, 2nd, or 5th gear because of the fail-safe function.

DTC (A/T)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   - 2. Clear the DTC with the HDS.

   - 3. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
   P0970 A/T Clutch Pressure Control Solenoid Valve C (Open or Short)

   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 and loose terminals between A/T clutch pressure control solenoid valve C 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. Determine possible failure area (short in LSC line, others)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   - 2. Jump the SCS line with the HDS.

   - 3. Disconnect the following connector.

   PCM connector B (51P) - Refer to: How to Troubleshoot the Fuel and Emissions Systems, or How to Troubleshoot the A/T System (2014 2015), or How to Troubleshoot the Brake Booster Pressure Monitoring System (2016 2017 2018 2019 2020), or How to Troubleshoot the Fuel and Emissions Systems(With Auto Idle Stop System) (2016)

   - 4. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	PCM connector B (51P): disconnected
   Test circuit	LSC
   Test point 1	PCM connector B (51P) No. 8 (PNK)
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   Go to step 3.

   NO 

   Go to step 4.

3. Shorted wire check (LSC line)

   -1. Disconnect the following connector.

   A/T clutch pressure control solenoid valve C 2P connector

   - 2. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	A/T clutch pressure control solenoid valve C 2P connector: disconnected
   	PCM connector B (51P): disconnected
   Test circuit	LSC
   Test point 1	A/T clutch pressure control solenoid valve C 2P connector No. 2 (PNK)
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   Repair a short to ground in the LSC wire between A/T clutch pressure control solenoid valve C and the PCM.

   NO 

   The LSC wire is OK. Faulty A/T clutch pressure control solenoid valve C. Replace the secondary valve body (A/T clutch pressure control solenoid valve C) .

4. Open wire check (LSC line)

   -1. Disconnect the following connector.

   A/T clutch pressure control solenoid valve C 2P connector

   - 2. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	A/T clutch pressure control solenoid valve C 2P connector: disconnected
   	PCM connector B (51P): disconnected
   Test circuit	LSC
   Test point 1	A/T clutch pressure control solenoid valve C 2P connector No. 2 (PNK)
   Test point 2	PCM connector B (51P) No. 8 (PNK)

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The LSC wire is OK. Go to step 5.

   NO 

   Repair an open in the LSC wire between A/T clutch pressure control solenoid valve C and the PCM.

5. Open wire check (LSC PG line)

   -1. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	A/T clutch pressure control solenoid valve C 2P connector: disconnected
   	PCM connector B (51P): disconnected
   Test circuit	LSC PG
   Test point 1	A/T clutch pressure control solenoid valve C 2P connector No. 1 (BLK)
   Test point 2	Body ground

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   The LSC PG wire is OK. Go to step 6.

   NO 

   Repair an open in the LSC PG wire between A/T clutch pressure control solenoid valve C and ground (G101) or repair poor ground (G101).

6. A/T clutch pressure control solenoid valve C check

   -1. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	A/T clutch pressure control solenoid valve C 2P connector: disconnected
   	PCM connector B (51P): disconnected
   Test circuit	LSC, LSC PG
   Test point 1	A/T clutch pressure control solenoid valve C 2P connector No. 1
   Test point 2	A/T clutch pressure control solenoid valve C 2P connector No. 2

   Courtesy of HONDA, U.S.A., INC.

   Is there 4.7-5.9 -Ω

   YES 

   A/T clutch pressure control solenoid valve C is OK. Replace the PCM - Refer to: PCM Removal and Installation (2014 2015), or PCM Removal and Installation (2016) .

   NO 

   Faulty A/T clutch pressure control solenoid valve C. Replace the secondary valve body (A/T clutch pressure control solenoid valve C) .