LEMON Manuals: Even more car manuals for everyone
Home >> Acura >> 2014 >> MDX SH-AWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System - DTC Diagnostics (4 Of 5) (Except Hybrid) >> DTC Troubleshooting >> DTC P16E7 (2016)

DTC P16E7 (2016)

DTC P16E7  : Battery Blower LIN Communication Error

NOTE: Before you troubleshoot, review the general troubleshooting information - Refer to: How to Troubleshoot the A/T System (2014 2015), or How to Troubleshoot the Brake Booster Pressure Monitoring System (2016 2017 2018 2019 2020), or How to Troubleshoot the Fuel and Emissions Systems(With Auto Idle Stop System) (2016), or How to Troubleshoot the Fuel and Emissions Systems .
DTC Description Confirmed DTC Pending DTC Freeze Frame
P16E7 Battery Blower LIN Communication Error      

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 Freeze Frame
    P16E7 Battery Blower LIN Communication Error      

    Is DTC P16E7 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 battery fan motor and the PCM. 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.

  2. Determine possible failure area (IG1 SUS line, BATT FAN GND line, others)

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

    - 2. Disconnect the following connector.

    Battery fan motor 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
      Battery fan motor 3P connector: disconnected
    Test point 1 Battery fan motor 3P connector No. 1
    Test point 2 Battery fan motor 3P connector No. 3
    GHH319450Courtesy of HONDA, U.S.A., INC.

    Is there battery voltage?

    YES 

    Go to step 3.

    NO 

    Go to step 7.

  3. Determine possible failure area (LIN/LIN(ACG) line shorted, others)

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

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

    Test condition Vehicle OFF (LOCK) mode
      Battery fan motor 3P connector: disconnected
    Test point 1 Battery fan motor 3P connector No. 2
    Test point 2 Body ground
    GHH319451Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    Go to step 4.

    NO 

    The LIN/LIN(ACG) wire is not shorted. Go to step 5.

  4. Shorted wire check (LIN/LIN(ACG) line)

    -1. Jump the SCS line with the HDS.

    - 2. Continue to check for continuity between battery fan motor 3P connector terminal No. 2 and body ground, while disconnecting these connectors, one at a time:

    • PCM connector B (51P)
    • Alternator 1P connector
    • DC-DC converter connector A (3P)

    Does continuity go away when one of the above connectors is disconnected?

    YES 

    The LIN/LIN(ACG) wire is OK. Replace the part that caused an open when it was disconnected. If these parts are OK, replace the battery fan motor .

    NO 

    Repair a short in the LIN/LIN(ACG) wire between the PCM (B50), the alternator, the battery fan motor, and the DC-DC converter.

  5. Open wire check (LIN/LIN(ACG) line)

    -1. Jump the SCS line with the HDS.

    - 2. Disconnect the following connector.

    PCM connector B (51P)

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

    Test condition Vehicle OFF (LOCK) mode
      PCM connector B (51P): disconnected
      Battery fan motor 3P connector: disconnected
    Test point 1 Battery fan motor 3P connector No. 2
    Test point 2 PCM connector B (51P) No. 50 - Refer to: PCM Connector for Inputs and Outputs (2014 2015), or PCM Connector for Inputs and Outputs (2016), or PCM Connector for Inputs and Outputs (2017 2018 2019 2020)
    GHH319452Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    The LIN/LIN(ACG) wire is OK. Go to step 6.

    NO 

    Repair an open in the LIN/LIN(ACG) wire between the PCM (B50) and the battery fan motor.

  6. Battery fan motor check (substitution)

    -1. Substitute a known-good battery fan motor.

    - 2. Reconnect all connectors.

    - 3. Turn the vehicle to the ON mode.

    - 4. Clear the DTC with the HDS.

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

    DTC Description Confirmed DTC Pending DTC Freeze Frame
    P16E7 Battery Blower LIN Communication Error      

    Is DTC P16E7 indicated?

    YES 

    Update the PCM if it does not have the latest software, or substitute a known-good PCM - Refer to: PCM Removal and Installation (2016), or PCM Removal and Installation (2014 2015) .

    NO 

    Replace the original battery fan motor .

  7. Fuse check

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

    - 2. Check the following fuse.

    Fuse No. E21 (7.5 A)
    Location Passenger's under-dash fuse/relay box

    Is the fuse OK?

    YES 

    The IG1 SUS wire is not shorted. Go to step 8.

    NO 

    Repair a short in the IG1 SUS wire between the battery fan motor and the No. E21 (7.5 A) fuse. Also replace the No. E21 (7.5 A) fuse.

  8. Open wire check (IG1 SUS line)

    -1. Turn the vehicle to the ON mode.

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

    Test condition Vehicle ON mode
      Battery fan motor 3P connector: disconnected
    Test point 1 Battery fan motor 3P connector No. 3
    Test point 2 Body ground
    GHH319453Courtesy of HONDA, U.S.A., INC.

    Is there battery voltage?

    YES 

    The IG1 SUS wire is OK. Go to step 9.

    NO 

    Repair an open in the IG1 SUS wire between No. E21 (7.5 A) fuse in the passenger's under-dash fuse/relay box and the battery fan motor.

  9. Open wire check (BATT FAN GND line)

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

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

    Test condition Vehicle OFF (LOCK) mode
      Battery fan motor 3P connector: disconnected
    Test point 1 Battery fan motor 3P connector No. 1
    Test point 2 Body ground
    GHH319454Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    Replace the battery fan motor .

    NO 

    Repair an open in the BATT FAN GND wire between the battery fan motor and G402.

scientia non olet · About LEMON Manuals