ABS INDICATOR, BRAKE SYSTEM INDICATOR (RED), VSA INDICATOR & BRAKE SYSTEM INDICATOR (AMBER) DO NOT GO OFF [With Auto Idle Stop System] (2016 2017 2018)

NOTE:  Complete the VSA sensor neutral position memorization first if the modulator or the steering angle sensor is replaced.

1. All DTCs check

   -1. Turn the vehicle to the ON mode.

   - 2. All DTCs check with the HDS.

   All DTCs

   Are there DTCs indicated?

   YES 

   Go to indicated DTC's troubleshooting.

   NO 

   Go to step 2.

2. Fuse check 1

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

   - 2. Check the following fuse.

   Fuse	No. A1-4 (20 A)
   Location	Under-hood fuse/relay box

   Is the fuse OK?

   YES 

   The fuse is OK. Reinstall the fuse, then go to step 3.

   NO 

   Replace the fuse. Turn the vehicle to the ON mode, then to the OFF (LOCK) mode. If the fuse blows again, repair the short to ground on the No. A1-4 (20 A) fuse circuit.

3. Fuse check 2

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

   - 2. Check the following fuse.

   Fuse	No. C7 (15 A)
   Location	Under-dash fuse/relay box

   Is the fuse OK?

   YES 

   The fuse is OK. Reinstall the fuse, then go to step 4.

   NO 

   Replace the fuse. Turn the vehicle to the ON mode, then to the OFF (LOCK) mode. If the fuse blows again, repair a short to ground in the No. C7 (15A) fuse circuit.

4. Fuse check 3

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

   - 2. Check the following fuse.

   Fuse	No. D2 (7.5 A)
   Location	Auxiliary under-dash fuse/relay box

   Is the fuse OK?

   YES 

   The fuse is OK. Reinstall the fuse, then go to step 5.

   NO 

   Replace the fuse. Turn the vehicle to the ON mode, then to the OFF (LOCK) mode. If the fuse blows again, repair a short to ground in the No. D2 (7.5A) fuse circuit.

5. DC-DC converter IG1 relay 2 check

   -1. Remove the DC-DC converter IG1 relay 2 from the auxiliary under-dash fuse/relay box, and test it.

   Is the relay OK?

   YES 

   The relay is OK. Reinstall the relay, then go to step 6.

   NO 

   Replace the DC-DC converter IG1 relay 2.

6. Open wire check (IG1 VSA (DC/DC) line) 1

   -1. Disconnect the following connector.

   VSA modulator-control unit 38P connector

   - 2. Turn the vehicle to the ON mode.

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

   Test condition	Vehicle ON mode
   VSA modulator-control unit 38P connector: disconnected
   Test point 1	VSA modulator-control unit 38P connector No. 11 - Refer to: VSA Modulator-Control Unit Connector for Inputs and Outputs (2016 2017 2018)  or VSA Modulator-Control Unit Connector for Inputs and Outputs (2019 2020 2021) .
   Test point 2	Body ground

   Is there battery voltage?

   YES 

   The IG1 VSA (DC/DC) wire is OK. Go to step 11.

   NO 

   Go to step 7.

7. Open wire check (IG1 VSA (DC-DC) line) 2

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

   - 2. Remove the DC-DC converter IG1 relay 2 from the auxiliary under-dash fuse/relay box.

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

   Test condition	Vehicle OFF (LOCK) mode
   DC-DC converter IG1 relay 2: removed
   VSA modulator-control unit 38P connector: disconnected
   Test point 1	DC-DC converter IG1 relay 2 4P socket No. 1
   Test point 2	VSA modulator-control unit 38P connector: disconnected No. 11 - Refer to: VSA Modulator-Control Unit Connector for Inputs and Outputs (2016 2017 2018)  or VSA Modulator-Control Unit Connector for Inputs and Outputs (2019 2020 2021)

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

   Is there continuity?

   YES 

   The IG1 VSA (DC-DC) wire is OK. Go to step 8.

   NO 

   Repair an open in the IG1 VSA (DC-DC) wire between the DC-DC converter IG1 relay 2 in the auxiliary under-dash fuse/relay box and the VSA modulator-control unit 38P connector.

8. Open wire check (+B OUT2) line)

   -1. Disconnect the following connector.

   DC-DC converter connector B (5P)

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

   Test condition	Vehicle OFF (LOCK) mode
   DC-DC converter IG1 relay 2: removed
   DC-DC converter connector B (5P): disconnected
   Test point 1	DC-DC converter IG1 relay 2 socket No. 2
   Test point 2	DC-DC converter connector B (5P) No. 5

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

   Is there continuity?

   YES 

   The +B OUT2 wire is OK. Go to step 9.

   NO 

   Repair an open in the +B OUT2 wire between the DC-DC converter IG1 relay 2 in the auxiliary under-dash fuse/relay box and the DC-DC converter connector B.

9. Open wire check (IG1 ACG line)

   -1. Turn the vehicle to the ON mode.

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

   Test condition	Vehicle ON mode
   DC-DC converter IG1 relay 2: removed
   Test point 1	DC-DC converter IG1 relay 2 socket No. 3
   Test point 2	Body ground

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

   Is there battery voltage?

   YES 

   The IG1 ACG wire is OK. Go to step 10.

   NO 

   Repair an open in the IG1 ACG wire between the under-dash fuse/relay box and the DC-DC converter IG1 relay 2 in the auxiliary under-dash fuse/relay box.

10. Open wire check (GND line)

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

    - 2. Remove the DC-DC converter IG1 relay 1 from the auxiliary under-dash fuse/relay box.

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

    Test condition	Vehicle OFF (LOCK) mode
    DC-DC converter IG1 relay 1: removed
    DC-DC converter IG1 relay 2: removed
    Test point 1	DC-DC converter IG1 relay 2 socket No. 4
    Test point 2	Body ground

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

    Is there continuity?

    YES 

    The GND wire is OK. Replace the DC-DC converter .

    NO 

    Repair an open or high resistance in the GND wire between the DC-DC converter IG1 relay 2 in the auxiliary under-dash fuse/relay box and the body ground (G301).

11. Open wire check (FSR +B line)

    -1. Disconnect the following connector.

    VSA modulator-control unit 38P connector

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

    Test condition	Vehicle OFF (LOCK) mode
    VSA modulator-control unit 38P connector: disconnected
    Test point 1	VSA modulator-control unit 38P connector No. 4 - Refer to: VSA Modulator-Control Unit Connector for Inputs and Outputs (2016 2017 2018)  or VSA Modulator-Control Unit Connector for Inputs and Outputs (2019 2020 2021) .

    Test point 2

    Body ground

    Is there battery voltage?

    YES 

    The FSR +B wire is OK. Go to step 12.

    NO 

    Repair an open in the FSR +B wire between the No. A1-4 (20 A) fuse in the under-hood fuse/relay box and the VSA modulator-control unit.

12. Open wire check (PGND 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
    VSA modulator-control unit 38P connector: disconnected
    Test point 1	VSA modulator-control unit 38P connector No. 1 - Refer to: VSA Modulator-Control Unit Connector for Inputs and Outputs (2016 2017 2018)  or VSA Modulator-Control Unit Connector for Inputs and Outputs (2019 2020 2021) .
    Test point 2	Body ground

    Is there continuity?

    YES 

    The PGND wire is OK. Go to step 13.

    NO 

    Repair an open in the PGND wire between the VSA modulator-control unit and body ground (G203).

13. Open wire check (F-CAN A_H, F-CAN A_L lines)

    -1. Disconnect the following connector.

    VSA modulator-control unit 38P connector

    Gauge control module 32P connector

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

    Test condition	Vehicle OFF (LOCK) mode
    VSA modulator-control unit 38P connector: disconnected
    Gauge control module 32P connector: disconnected
    Test point 1	VSA modulator-control unit 38P connector No. 6 - Refer to: VSA Modulator-Control Unit Connector for Inputs and Outputs (2019 2020 2021)  or VSA Modulator-Control Unit Connector for Inputs and Outputs (2016 2017 2018) .
    Test point 2	Gauge control module 32P connector No. 24 - Refer to: Gauge Control Module Connector for Inputs and Outputs (2016 2017 2018) or Gauge Control Module Connector for Inputs and Outputs (2019) or Gauge Control Module Connector for Inputs and Outputs (2020 2021) .

    Test point 1	VSA modulator-control unit 38P connector No. 7 - Refer to: VSA Modulator-Control Unit Connector for Inputs and Outputs (2016 2017 2018)  or VSA Modulator-Control Unit Connector for Inputs and Outputs (2019 2020 2021)
    Test point 2	Gauge control module 32P connector No. 24 - Refer to: Gauge Control Module Connector for Inputs and Outputs (2016 2017 2018) or Gauge Control Module Connector for Inputs and Outputs (2019) or Gauge Control Module Connector for Inputs and Outputs (2020 2021) .

    Is there continuity?

    YES 

    The F-CAN A_H and F-CAN A_L wires are OK. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting or substitute a known-good VSA modulator-control unit .

    NO 

    Repair an open in the F-CAN A_H and/or F-CAN A_L wire between the gauge control module and the VSA modulator-control unit.