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DTC P1659

WARNING: This page is about a different variant/trim than selected.

DTC P1659  : ETCS Control Relay OFF Malfunction

NOTE:  Before you troubleshoot, review the general troubleshooting information .

DTC Description Confirmed DTC Pending DTC
P1659 ETCS Control Relay OFF Malfunction    

DTC (PGM-FI)

  1. Problem verification

    -1. Turn the vehicle to the ON mode.

    -2. Clear the DTC with the HDS.

    -3. Check for Pending or Confirmed DTCs with the HDS.

    DTC Description Confirmed DTC Pending DTC
    P1659 ETCS Control Relay OFF Malfunction    

    Is DTC P1659 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 relay circuit board and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .

  2. Fuse check

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

    -2. Check the following fuse.

    Fuse No. A8

    Is the fuse OK?

    YES 

    Go to step 3.

    NO 

    Go to step 7.

  3. Relay circuit board check

    -1. Remove and test the relay circuit board .

    Is the relay circuit board OK?

    YES 

    Go to step 4.

    NO 

    Replace the relay circuit board .

  4. Open wire check (+B_FI_SUB line)

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

    Test condition Vehicle OFF (LOCK) mode
      Relay circuit board: removed
    Test point 1 Relay circuit board connector C (18P) (female terminals) No. 14:
    Test point 2 Body ground
    GHH377798Courtesy of HONDA, U.S.A., INC.

    Is there battery voltage?

    YES 

    Go to step 5.

    NO 

    Repair an open in the +B_FI_SUB wire between the No. A8 fuse and the relay circuit board.

  5. Open wire check (FI_SUB_RLY_OUT line)

    -1. Jump the SCS line with the HDS, and wait more than 1 minute.

    -2. Disconnect the following connector.

    PCM connector A (50P)

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

    Test condition Vehicle OFF (LOCK) mode
      Relay circuit board: removed
      PCM connector A (50P): disconnected
    Test point 1 Relay circuit board connector B (6P) (female terminals) No. 3:
    Test point 2 PCM connector A (50P) No. 16
    GHH377800Courtesy of HONDA, U.S.A., INC.

    Is there 1.0 Ω or less?

    YES 

    Go to step 6.

    NO 

    Repair an open in the FI_SUB_RLY_OUT wire between the PCM (A16) and the relay circuit board.

  6. Open wire check (FI_SUB_RLY_CL- line)

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

    Test condition Vehicle OFF (LOCK) mode
      Relay circuit board: removed
      PCM connector A (50P): disconnected
    Test point 1 Relay circuit board connector B (6P) (female terminals) No. 2:
    Test point 2 PCM connector A (50P) No. 25
    GHH377802Courtesy of HONDA, U.S.A., INC.

    Is there 1.0 Ω or less?

    YES 

    The FI_SUB_RLY_CL- wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM .

    NO 

    Repair an open in the FI_SUB_RLY_CL- wire between the PCM (A25) and the relay circuit board.

  7. Shorted wire check (FI_SUB_RLY_OUT line)

    -1. Remove the No. A11 fuse .

    -2. Jump the SCS line with the HDS, and wait more than 1 minute.

    -3. Disconnect the following connectors.

    PCM connector A (50P)
    Relay circuit board connector B (6P)

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

    Test condition Vehicle OFF (LOCK) mode
      No. A11 fuse: removed
      PCM connector A (50P): disconnected
      Relay circuit board connector B (6P): disconnected
    Test point 1 Relay circuit board connector B (6P) (female terminals) No. 3:
    Test point 2 Body ground
    GHH377804Courtesy of HONDA, U.S.A., INC.

    Is there 1 MΩ or more?

    YES 

    The FI_SUB_RLY_OUT wire is OK. Go to step 8.

    NO 

    Repair a short in the FI_SUB_RLY_OUT wire between the PCM (A16), No. A11 fuse, and the relay circuit board. Also replace the No. A8 fuse.

  8. Shorted wire check (+B_FI_SUB line)

    -1. Disconnect the following connector.

    Relay circuit board connector C (18P)

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

    Test condition Vehicle OFF (LOCK) mode
      No. A11 fuse: removed
      PCM connector A (50P): disconnected
      Relay circuit board connector B (6P): disconnected
      Relay circuit board connector C (18P): disconnected
    Test point 1 Relay circuit board connector C (18P) (female terminals) No. 14:
    Test point 2 Body ground
    GHH377806Courtesy of HONDA, U.S.A., INC.

    Is there 1 MΩ or more?

    YES 

    The +B_FI_SUB wire is OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM .

    NO 

    Repair a short in the +B_FI_SUB wire between the No. A8 fuse and the relay circuit board. Also replace the No. A8 fuse

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