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DTC P0AE1 (62)

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

DTC P0AE1  : HV Battery Precharge Contactor Circuit

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

DTC Description Confirmed DTC Pending DTC Freeze Frame
P0AE1 HV Battery Precharge Contactor Circuit      

DTC (Electric Powertrain)

  1. DTC (OBD STATUS) check

    -1. Turn the vehicle to the ON mode.

    -2. Monitor the OBD STATUS for DTC P0AFA, P0B3B, P0B40, P0B45, P0B4A, P0B4F, P0B54, U0110, U012D, U1205, U1220, U12A5, U1604 and U1605 in the DTCs MENU with the HDS.

    DTC Description OBD STATUS
    P0AFA HV Battery System Voltage Low  
    P0B3B HV Battery Cell Voltage Sense Circuit 1  
    P0B40 HV Battery Cell Voltage Sense Circuit 2  
    P0B45 HV Battery Cell Voltage Sense Circuit 3  
    P0B4A HV Battery Cell Voltage Sense Circuit 4  
    P0B4F HV Battery Cell Voltage Sense Circuit 5  
    P0B54 HV Battery Cell Voltage Sense Circuit 6  
    U0110 F-CAN Malfunction (Battery Condition Monitor Module - Traction Motor Control Module)  
    U012D F-CAN Malfunction (Battery Condition Monitor Module - Generator Motor Control Module)  
    U1205 EP-CAN Malfunction (Battery Condition Monitor Module - Traction Motor Control Module)  
    U1220 DC-DC Converter Serial Communication Transmit Error  
    U12A5 EP-CAN Malfunction (Battery Condition Monitor Module - Generator Motor Control Module)  
    U1604 F-CAN Malfunction (Battery Condition Monitor Module - Traction Motor Control Module)  
    U1605 F-CAN Malfunction (Battery Condition Monitor Module - Generator Motor Control Module)  

    Does the HDS indicate FAILED?

    YES 

    Go to the indicated DTC's troubleshooting.

    NO 

    Go to step 2.

  2. Motor control system check

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

    Traction motor control module 

    DTC Description Confirmed DTC Pending DTC Freeze Frame
           

    Generator motor control module 

    DTC Description Confirmed DTC Pending DTC Freeze Frame
           

    DTC (Electric Powertrain)

    Are any motor control module DTC indicated?

    YES 

    Go to the indicated DTC's troubleshooting.

    NO 

    Go to step 3.

  3. Problem verification

    -1. Clear the DTC with the HDS.

    -2. Turn the vehicle to the OFF (LOCK) mode.

    -3. Turn the vehicle to the ON mode.

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

    DTC Description Confirmed DTC Pending DTC Freeze Frame
    P0AE1 HV Battery Precharge Contactor Circuit      

    Is DTC P0AE1 indicated?

    YES 

    The failure is duplicated. Go to step 4.

    NO 

    Intermittent failure, the system is OK at this time. 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.

  4. Service plug check (high voltage circuit)

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

    -2. Remove the service plug .

    -3. Check the service plug terminal (A) for damage or corrosion.

    GHH375274Courtesy of HONDA, U.S.A., INC.

    Is the terminal OK?

    YES 

    Go to step 5.

    NO 

    Replace the service plug.

  5. Electric A/C compressor check

    -1. Disconnect the electric A/C compressor connector A (2P) from the electric A/C compressor .

    -2. Reinstall the service plug .

    -3. Do the 12 volt battery terminal reconnection procedure .

    -4. Turn the vehicle to the ON mode.

    -5. Clear the DTC with the HDS.

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

    DTC Description Confirmed DTC Pending DTC Freeze Frame
    P0AE1 HV Battery Precharge Contactor Circuit      

    Is DTC P0AE1 indicated?

    YES 

    Go to step 6.

    NO 

    Replace the electric A/C compressor .

  6. Electric A/C compressor power cable check

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

    -2. Remove the service plug .

    -3. Disconnect the electric A/C compressor high voltage cable 2P connector (A) from the subjunction board.

    GHH375275Courtesy of HONDA, U.S.A., INC.

    -4. Reinstall the service plug .

    -5. Do the 12 volt battery terminal reconnection procedure .

    -6. Turn the vehicle to the ON mode.

    -7. Clear the DTC with the HDS.

    -8. Check for Pending or Confirmed DTCs with the HDS.

    DTC Description Confirmed DTC Pending DTC Freeze Frame
    P0AE1 HV Battery Precharge Contactor Circuit      

    Is DTC P0AE1 indicated?

    YES 

    Go to step 7.

    NO 

    There is a failure in the electric A/C compressor power cable. Replace the battery power cable .

  7. Battery power cable check

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

    -2. Do the 12 volt battery terminal disconnection procedure .

    -3. Remove the service plug .

    -4. Disconnect the battery power cable connector from the PCU .

    -5. Disconnect the battery power cable terminals (A) from the subjunction board .

    NOTE:  Wrap the subjunction board terminals with insulating tape.

    GHH375276Courtesy of HONDA, U.S.A., INC.

    -6. Check for continuity between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
      Battery power cable (PCU side): disconnected
      Battery power cable (subjunction board side): disconnected
    Test point 1 Battery power cable (subjunction board side) (+) (A)
    Test point 2 Battery power cable (subjunction board side) (-) (B)
    GHH375277Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    Replace the battery power cable .

    NO 

    Go to step 8.

  8. Main fuse check

    -1. Remove the IPU and the IPU case .

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

    Test condition Vehicle OFF (LOCK) mode
    Test point 1 Main fuse terminal (A)
    Test point 2 Main fuse terminal (B)
    GHH375278Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    Go to step 9.

    NO 

    Faulty the main fuse. Replace the junction board .

  9. High voltage contactor check (coil side)

    -1. Remove the junction board .

    -2. Disconnect the following connector.

    Junction board 4P connector

    -3. At the junction board side, measure the resistance between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
      Junction board 4P connector: disconnected
    Test point 1 Junction board 4P connector (male terminals) No. 3:
    Test point 2 Junction board 4P connector (male terminals) No. 4:
    GHH375281Courtesy of HONDA, U.S.A., INC.

    Is there 31.1 - 38.0 Ω ?

    YES 

    Go to step 10.

    NO 

    Faulty high voltage contactor. Replace the junction board .

  10. High voltage contactor check (switch side)

    -1. At the junction board side, connect terminals A and B to the 12 volt battery with jumper wires.

    Terminal A Junction board 4P connector (male terminals) No. 3:
    Terminal B 12 volt battery positive terminal:
    Terminal A Junction board 4P connector (male terminals) No. 4:
    Terminal B 12 volt battery negative terminal:
    GHH375286Courtesy of HONDA, U.S.A., INC.

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

    Test condition Vehicle OFF (LOCK) mode
      Junction board 4P connector: disconnected
      Junction board 4P connector terminals No. 3 and No. 4 (junction board side): jumped to 12 volt battery
    Test point 1 High voltage contactor terminal (A)
    Test point 2 High voltage contactor terminal (B)
    GHH375287Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    Go to step 11.

    NO 

    Faulty high voltage contactor. Replace the junction board .

  11. Open wire check (CNTP line)

    -1. Remove the jumper wire from the junction board.

    -2. Disconnect the following connector.

    Battery condition monitor module connector E (32P)

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

    Test condition Vehicle OFF (LOCK) mode
      Junction board 4P connector: disconnected
      Battery condition monitor module connector E (32P): disconnected
    Test point 1 Junction board 4P connector (female terminals) No. 4:
    Test point 2 Battery condition monitor module connector E (32P) No. 4
    GHH375289Courtesy of HONDA, U.S.A., INC.

    Is there 1.0 Ω or less?

    YES 

    Go to step 12.

    NO 

    Repair an open in the CNTP wire between the junction board and the battery condition monitor module (E4).

  12. Bypass contactor check (coil side)

    -1. At the junction board side, measure the resistance between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
      Junction board 4P connector: disconnected
    Test point 1 Junction board 4P connector (male terminals) No. 2:
    Test point 2 Junction board 4P connector (male terminals) No. 3:
    GHH375292Courtesy of HONDA, U.S.A., INC.

    Is there 92.7 - 113.3 Ω ?

    YES 

    Go to step 13.

    NO 

    Faulty bypass contactor. Replace the junction board .

  13. Open wire check (PRE line)

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

    Test condition Vehicle OFF (LOCK) mode
      Junction board 4P connector: disconnected
      Battery condition monitor module connector E (32P): disconnected
    Test point 1 Junction board 4P connector (female terminals) No. 2:
    Test point 2 Battery condition monitor module connector E (32P) No. 6
    GHH375294Courtesy of HONDA, U.S.A., INC.

    Is there 1.0 Ω or less?

    YES 

    Go to step 14.

    NO 

    Repair an open in the PRE wire between the junction board and the battery condition monitor module (E6).

  14. Bypass contactor check (switch side)

    -1. At the junction board side, connect terminals A and B to the 12 volt battery with jumper wires.

    Terminal A Junction board 4P connector (male terminals) No. 3:
    Terminal B 12 volt battery positive terminal:
    Terminal A Junction board 4P connector (male terminals) No. 2:
    Terminal B 12 volt battery negative terminal:
    GHH375299Courtesy of HONDA, U.S.A., INC.

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

    Test condition Vehicle OFF (LOCK) mode
      Junction board 4P connector: disconnected
      Junction board 4P connector terminals No. 3 and No. 2 (junction board side): jumped to 12 volt battery
    Test point 1 High voltage contactor terminal (A)
    Test point 2 High voltage contactor terminal (B)
    GHH375300Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    Go to step 15

    NO 

    Faulty bypass contactor. Replace the junction board .

  15. High voltage sub contactor check (coil side)

    -1. Remove the jumper wire from the junction board.

    -2. At the junction board side, measure the resistance between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode
      Junction board 4P connector: disconnected
    Test point 1 Junction board 4P connector (male terminals) No. 1:
    Test point 2 Junction board 4P connector (male terminals) No. 3:
    GHH375303Courtesy of HONDA, U.S.A., INC.

    Is there 31.1 - 38.0 Ω ?

    YES 

    Go to step 16.

    NO 

    Faulty high voltage sub contactor. Replace the junction board .

  16. High voltage sub contactor check (switch side)

    -1. At the junction board side, connect terminals A and B to the 12 volt battery with jumper wires

    Terminal A Junction board 4P connector (male terminals) No. 3:
    Terminal B 12 volt battery positive terminal:
    Terminal A Junction board 4P connector (male terminals) No. 1:
    Terminal B 12 volt battery negative terminal:
    GHH375308Courtesy of HONDA, U.S.A., INC.

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

    Test condition Vehicle OFF (LOCK) mode
      Junction board 4P connector: disconnected
      Junction board 4P connector terminals No. 3 and No. 1 (junction board side): jumped to 12 volt battery
    Test point 1 High voltage sub contactor terminal (A)
    Test point 2 High voltage sub contactor terminal (B)
    GHH375309Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    Go to step 17.

    NO 

    Faulty high voltage sub contactor. Replace the junction board .

  17. Open wire check (CNTN line)

    -1. Remove the jumper wire from the junction board.

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

    Test condition Vehicle OFF (LOCK) mode
      Junction board 4P connector: disconnected
      Battery condition monitor module connector E (32P): disconnected
    Test point 1 Junction board 4P connector (female terminals) No. 1:
    Test point 2 Battery condition monitor module connector E (32P) No. 5
    GHH375311Courtesy of HONDA, U.S.A., INC.

    Is there 1.0 Ω or less?

    YES 

    Go to step 18.

    NO 

    Repair an open in the CNTN wire between the junction board and the battery condition monitor module (E5).

  18. Open wire check (CNTPS line)

    -1. Disconnect the following connector.

    Service plug 3P connector

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

    Test condition Vehicle OFF (LCCK) mode
      Junction board 4P connector: disconnected
      Battery condition monitor module connector E (32P): disconnected
      Service plug 3P connector: disconnected
    Test point 1 Junction board 4P connector (female terminals) No. 3:
    Test point 2 Service plug 3P connector (female terminals) No. 1:
    Test point 1 Battery condition monitor module connector E (32P) No. 3
    Test point 2 Service plug 3P connector (female terminals) No. 2:
    GHH375315Courtesy of HONDA, U.S.A., INC.
    GHH375316Courtesy of HONDA, U.S.A., INC.

    Is there 1.0 Ω or less?

    YES 

    Go to step 19.

    NO 

    Repair an open in the CNTPS wire between the junction board and the service plug, and/or the battery condition monitor module (E3) and the service plug.

  19. Service plug check (contactor control circuit)

    -1. Install the service plug .

    -2. Reconnect the service plug 3P connector.

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

    Test condition Vehicle OFF (LCCK) mode
      Junction board 4P connector: disconnected
      Battery condition monitor module connector E (32P): disconnected
    Test point 1 Battery condition monitor module connector E (32P) No. 3
    Test point 2 Junction board 4P connector (female terminals) No. 3:
    GHH375318Courtesy of HONDA, U.S.A., INC.

    Is there 1.0 Ω or less?

    YES 

    Replace the battery condition monitor module .

    NO 

    Replace the service plug.

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