DTC Troubleshooting: P281D, P281E(CVT (TCM))

DTC P281D  : Shift Solenoid Valve O/P (Pressure Control Solenoid H) Control Circuit Low

DTC P281E  : Shift Solenoid Valve O/P (Pressure Control Solenoid H) Control Circuit High

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(CVT)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   -3. Test-drive under following conditions:

   DTC	Test-drive condition
   P281D	Start the engine. Shift the transmission to D position/mode while pressing the brake pedal, and wait for at least 30 seconds.
   P281E	Start the engine. Shift the transmission to D position/mode while pressing the brake pedal, and wait for at least 30 seconds. Shift the transmission to P position/mode. Turn the vehicle to the OFF (LOCK) mode. 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
   P281D Shift Solenoid Valve O/P (Pressure Control Solenoid H) Control Circuit Low
   P281E Shift Solenoid Valve O/P (Pressure Control Solenoid H) Control Circuit High

   Is DTC P281D or P281E 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 the shift solenoid valve O/P and the TCM. 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 (TCM, short in SOL C line, open in SOL C/SHC+ line)

   -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 TCM from damage.

   -3. Disconnect the following connector.

   TCM 50P connector

   -4. Measure the resistance between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	TCM 50P connector: disconnected
   Test point 1	TCM 50P connector No. 6
   Test point 2	Body ground

   Is there 10.6-13.5 Ω?

   10.6-13.5 Ω

   Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or replace the original TCM .

   Less than 10.6 Ω

   Go to step 3.

   More than 13.5 Ω

   Go to step 4.

3. Shorted wire check (SOL C line)

   -1. Disconnect the following connector.

   Shift solenoid valve O/P 2P connector

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

   Test condition	Vehicle OFF (LOCK) mode
   	Shift solenoid valve O/P 2P connector: disconnected
   	TCM 50P connector: disconnected
   Test point 1	TCM 50P connector No. 6
   Test point 2	Body ground

   Is there continuity?

   YES 

   Repair a short to ground in the SOL C wire between the shift solenoid valve O/P and the TCM.

   NO 

   The SOL C wire is OK. Replace the shift solenoid valve O/P .

4. Open wire check (SOL C/SHC+ line)

   -1. Disconnect the following connector.

   Shift solenoid valve O/P 2P connector

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

   Test condition	Vehicle OFF (LOCK) mode
   	Shift solenoid valve O/P 2P connector: disconnected
   	TCM 50P connector: disconnected
   Test point 1	Shift solenoid valve O/P 2P connector (female terminals) No. 1 :
   Test point 2	TCM 50P connector No. 6

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

   Is there continuity?

   YES 

   The SOL C/SHC+ wire is OK. Replace the shift solenoid valve O/P .

   NO 

   Repair an open in the SOL C/SHC+ wire between the shift solenoid valve O/P and the TCM.