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Home >> Acura >> 2018 >> RLX Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTC Diagnostics (3 Of 6) (Except Hybrid) >> DTC Troubleshooting >> DTC P0365

DTC P0365

DTC P0365  : CMP Sensor Circuit No Signal

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information .
DTC Description Confirmed DTC Pending DTC Freeze Frame
P0365 CMP Sensor Circuit No Signal      

DTC (PGM-FI)

  1. Problem verification

    -1. Turn the vehicle to the ON mode.

    -2. Clear the DTC with the HDS.

    -3. Start the engine.

    -4. Check for Pending or Confirmed DTCs with the HDS.

    DTC Description Confirmed DTC Pending DTC Freeze Frame
    P0365 CMP Sensor Circuit No Signal      

    Is DTC P0365 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 at the CMP sensor and the PCM.

  2. Open wire check (IGP/FI MAIN RLY OUT line)

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

    -2. Disconnect the following connector.

    CMP sensor 3P connector

    -3. Turn the vehicle to the ON mode.

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

    Test condition Vehicle ON mode
      CMP sensor 3P connector: disconnected
    Test circuit IGP
    Test point 1 CMP sensor 3P connector No. 1 (YEL)
    Test point 2 Body ground
    GHH344759Courtesy of HONDA, U.S.A., INC.

    Is there battery voltage?

    YES 

    The IGP/FI MAIN RLY OUT wire is OK. Go to step 3.

    NO 

    Repair an open in the IGP/FI MAIN RLY OUT wire between the CMP sensor and PGM-FI main relay 1, then do the repair verification.

  3. Determine possible failure area (TDC line, others)

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

    Test condition Vehicle ON mode
      CMP sensor 3P connector: disconnected
    Test circuit TDC
    Test point 1 CMP sensor 3P connector No. 3 (GRY)
    Test point 2 Body ground
    GHH344760Courtesy of HONDA, U.S.A., INC.

    Is there about 5.0 V?

    YES 

    Go to step 4.

    NO 

    Go to step 5.

  4. Open wire check (LG line)

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

    Test condition Vehicle ON mode
      CMP sensor 3P connector: disconnected
    Test circuit IGP, LG
    Test point 1 CMP sensor 3P connector No. 1 (YEL)
    Test point 2 CMP sensor 3P connector No. 2 (BRN)
    GHH344761Courtesy of HONDA, U.S.A., INC.

    Is there battery voltage?

    YES 

    The LG wire is OK. Replace the CMP sensor , then do the repair verification.

    NO 

    Repair an open in the LG wire between the CMP sensor and G101, then do the repair verification.

  5. Shorted wire check (TDC 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
      CMP sensor 3P connector: disconnected
      PCM connector B (51P): disconnected
    Test circuit TDC
    Test point 1 PCM connector B (51P) No. 51 (GRY)
    Test point 2 Body ground
    GHH344762Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    Repair a short in the TDC wire between the PCM (B51) and the CMP sensor, then do the repair verification.

    NO 

    The TDC wire is not shorted. Go to step 6.

  6. Open wire check (TDC line)

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

    Test condition Vehicle OFF (LOCK) mode
      CMP sensor 3P connector: disconnected
      PCM connector B (51P): disconnected
    Test circuit TDC
    Test point 1 CMP sensor 3P connector No. 3 (GRY)
    Test point 2 PCM connector B (51P) No. 51 (GRY)
    GHH344763Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    The TDC wire is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM , then do the repair verification.

    NO 

    Repair an open in the TDC wire between the PCM (B51) and the CMP sensor, then do the repair verification.

  7. Repair verification

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

    -2. Reconnect all connectors.

    -3. Exit the SCS mode with the HDS.

    -4. Turn the vehicle to the ON mode.

    -5. Reset the PCM with the HDS .

    Reset PCM

    -6. Do the PCM idle learn procedure .

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

    DTC Description Confirmed DTC Pending DTC Freeze Frame
    P0365 CMP Sensor Circuit No Signal      

    DTC (PGM-FI)

    Is DTC P0365 indicated?

    YES 

    Check for poor connections or loose terminals at the CMP sensor and the PCM. If the PCM was updated, substitute a known-good PCM , then recheck. If the PCM was substituted, go to step 1.

    NO 

    Troubleshooting is complete. If the PCM was substituted, replace the original PCM . If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.