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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 P0615

DTC P0615

DTC P0615  : Starter Cut Relay Diagnosis Circuit Malfunction

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
P0615 Starter Cut Relay Diagnosis Circuit Malfunction      

DTC (PGM-FI)

  1. Problem verification

    -1. Turn the vehicle to the ON mode.

    -2. Clear the DTC with the HDS.

    -3. Try to start the engine.

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

    DTC Description Confirmed DTC Pending DTC Freeze Frame
    P0615 Starter Cut Relay Diagnosis Circuit Malfunction      

    Is DTC P0615 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 driver's under-dash fuse/relay box, starter cut relay 1, starter cut relay 2, and the PCM.

  2. DTC check

    -1. Check for Pending or Confirmed DTCs with the HDS.

    DTC Description Confirmed DTC Pending DTC Freeze Frame
    P16F3 Starter Cut Relay 1 Control Circuit Low Voltage      
    P16F4 Starter Cut Relay 2 Control Circuit Low Voltage      

    Are DTC P16F3 and P16F4 indicated?

    YES 

    Go to the troubleshooting for DTC P16F3 and P16F4 .

    NO 

    Go to step 3.

  3. Determine possible failure area (START DIAG line, others)

    -1. Turn the vehicle to the ON mode.

    -2. Clear the DTC with the HDS.

    -3. Try to start the engine.

    Does the engine start?

    YES 

    Go to step 4.

    NO 

    Go to step 6.

  4. Fuse check

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

    -2. Check the following fuse.

    Fuse No. D25 (7.5 A)
    Location Driver's under-dash fuse/relay box

    Is the fuse OK?

    YES 

    Go to step 5.

    NO 

    Replace the No. D25 (7.5 A) fuse. Also check for a short to ground on the No. D25 (7.5 A) fuse circuit if needed, then do the repair verification.

  5. Open wire check (START DIAG line)

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

    -2. Jump the SCS line with the HDS.

    -3. Disconnect the following connectors.

    Driver's under-dash fuse/relay box connector F (32P)
    PCM connector A (51P)

    -4. Connect terminals A and B with a jumper wire.

    Terminal A Driver's under-dash fuse/relay box connector F (32P) No. 29 (PNK)
    Terminal B Body ground
    GHH344946Courtesy of HONDA, U.S.A., INC.

    -5. Check for continuity between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
    Driver's under-dash fuse/relay box connector F (32P): disconnected
    Driver's under-dash fuse/relay box connector F (32P) No. 29: jumped to body ground
    PCM connector A (51P): disconnected
    Test circuit START DIAG
    Test point 1 PCM connector A (51P) No. 26 (PNK)
    Test point 2 Body ground
    GHH344947Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    The START DIAG 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 START DIAG wire between the driver's under-dash fuse/relay box and the PCM (A26). If the wire is OK, replace the driver's under-dash fuse/relay box , then do the repair verification.

  6. Fuse check

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

    -2. Check the following fuse.

    Fuse No. D23 (7.5 A)
    Location Driver's under-dash fuse/relay box

    Is the fuse OK?

    YES 

    Go to step 7.

    NO 

    Replace the driver's under-dash fuse/relay box . Also replace the No. D23 (7.5 A) fuse, then do the repair verification.

  7. Open wire check (IG1A ST CUT line)

    -1. Remove starter cut relay 1 (A) from the driver's under-dash fuse/relay box.

    GHH344948Courtesy of HONDA, U.S.A., INC.

    -2. Turn the vehicle to the ON mode.

    -3. Measure the voltage between test points 1 and 2.

    Test condition Vehicle ON mode
    Starter cut relay 1: disconnected
    Test circuit IG1A ST CUT
    Test point 1 Starter cut relay 1 4P socket No. 3
    Test point 2 Body ground
    GHH344949Courtesy of HONDA, U.S.A., INC.

    Is there battery voltage?

    YES 

    Go to step 8.

    NO 

    Replace the driver's under-dash fuse/relay box, then do the repair verification.

  8. Relay check

    -1. Test starter cut relay 1 .

    Is the relay OK?

    YES 

    Replace the driver's under-dash fuse/relay box , then do the repair verification.

    NO 

    Replace starter cut relay 1, then do the repair verification.

  9. 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
    P0615 Starter Cut Relay Diagnosis Circuit Malfunction      

    DTC (PGM-FI)

    Is DTC P0615 indicated?

    YES 

    Check for poor connections or loose terminals at the driver's under-dash fuse/relay box, starter cut relay 1, starter cut relay 2, 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.

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