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Home >> Acura >> 2018 >> RLX Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTC Diagnostics (6 Of 6) (Except Hybrid) >> DTC Troubleshooting >> DTC P2826

DTC P2826

DTC P2826  : Line Pressure Solenoid Valve A Low Input

NOTE:
  • Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and 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
P2826 Line Pressure Solenoid Valve A Low Input      

DTC (A/T)

  1. Problem verification

    -1. Turn the vehicle to the ON mode.

    -2. Clear the DTC with the HDS.

    -3. Start the engine.

    -4. With the brake pedal pressed, shift to D, then release the brake pedal.

    -5. Monitoring the APP Sensor (%) with the HDS, press (2 % opened) and release (0 % opened) the accelerator pedal every 2 seconds.

    Signal Current conditions
    Values Unit
    APP Sensor (%)    

    -6. Check for Pending or Confirmed DTCs with the HDS.

    DTC Description Confirmed DTC Pending DTC Freeze Frame
    P2826 Line Pressure Solenoid Valve A Low Input      

    Is DTC P2826 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 line pressure solenoid valve A and the PCM.

  2. Fuse check

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

    -2. Check the following fuse.

    Fuse No. C1 (15 A)
    Location Under-hood fuse/relay box

    Is the fuse OK?

    YES 

    The fuse is OK. Go to step 3.

    NO 

    Replace the No. C1 (15 A) fuse, and recheck. If the fuse blows again, repair a short to ground on the No. C1 (15 A) fuse circuit, and recheck.

  3. Open wire check (IG1(VBSOL) line)

    -1. Jump the SCS line with the HDS.

    -2. Disconnect the following connector.

    PCM connector B (51P)

    -3. Turn the vehicle to the ON mode.

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

    Test condition Vehicle ON mode
      PCM connector B (51P): disconnected
    Test circuit IG1(VBSOL)
    Test point 1 PCM connector B (51P) No. 1 (TAN)
    Test point 2 Body ground
    GHH345322Courtesy of HONDA, U.S.A., INC.

    Is there battery voltage?

    YES 

    The IG1(VBSOL) wire is OK. Go to step 4.

    NO 

    Repair an open in the IG1(VBSOL) wire between the PCM and the No. C1 (15 A) fuse in the under-hood fuse/relay box.

  4. Line pressure solenoid valve A check

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

    -2. Reconnect PCM connector B (51P) .

    -3. Disconnect the following connector.

    Line pressure solenoid valve A 2P connector

    -4. Turn the vehicle to the ON mode.

    -5. Clear the DTC with the HDS.

    -6. Start the engine in P, and wait for at least 1 second.

    -7. Check for Pending or Confirmed DTCs with the HDS.

    DTC Description Confirmed DTC Pending DTC Freeze Frame
    P2826 Line Pressure Solenoid Valve A Low Input      

    Is DTC P2826 indicated?

    YES 

    Line pressure solenoid valve A is OK. Go to step 5.

    NO 

    Faulty line pressure solenoid valve A. Replace the secondary valve body (line pressure solenoid valve A) .

  5. Shorted wire check (PLA line)

    -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)

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

    Test condition Vehicle OFF (LOCK) mode
      Line pressure solenoid valve A 2P connector: disconnected
      PCM connector B (51P): disconnected
    Test circuit PLA
    Test point 1 PCM connector B (51P) No. 5 (YEL)
    Test point 2 Body ground
    GHH345323Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    Repair a short to ground in the PLA wire between line pressure solenoid valve A and the PCM.

    NO 

    The PLA wire is OK. Replace the PCM .