DTC P281D, P281E (CVT (ECM/Pcm))

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. Select the Shift Solenoid Valve O/P Test in the Miscellaneous Test Menu, and check that the shift solenoid valve O/P operates with the HDS.

   -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 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 shift solenoid valve O/P 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. Shift solenoid valve O/P 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. 17
   Test point 2	Body ground

   Is there 10.6-13.5 Ω?

   YES 

   The shift solenoid valve O/P 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 (SOL C 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. 17
   Test point 2	Body ground

   Is there continuity?

   YES 

   Repair a short to body ground in the SOL C wire between the solenoid wire harness A 8P connector and the PCM.

   NO 

   Go to step 4.

4. Shift solenoid valve O/P internal resistance check

   -1. Disconnect the following connector.

   Shift solenoid valve O/P 2P connector

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

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

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

   Is there 10.6-13.5 Ω?

   YES 

   The shift solenoid valve O/P is OK. Repair a short to body ground in the SHC+ wire between the solenoid wire harness A 8P connector and the shift solenoid valve O/P.

   NO 

   Replace the shift solenoid valve O/P .