ABS indicator, brake system indicator (red), VSA indicator, and brake system indicator (amber) do not go off (With CAN Gateway (Without Auto Idle Stop System)) (2019 2020)

ABS indicator, brake system indicator (red), VSA indicator, and brake system indicator (amber) do not go off 

NOTE:  Make sure the HDS communicates with the vehicle and the VSA modulator-control unit. If it does not, go to the DLC circuit troubleshooting - Refer to: DLC Circuit Troubleshooting (2019 2020)

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. B2-7 - Refer to: Fuse to Components Index (Without Auto Idle Stop System) (2019 2020),

   Is the fuse OK?

   YES 

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

   NO 

   Replace the fuse. If the fuse blows again, repair a short to ground in the No. B2-7 fuse circuit.

3. Fuse check 2

   - 1. Check the following fuse.

   Fuse	No. D23 - Refer to: Fuse to Components Index (Without Auto Idle Stop System) (2019 2020),

   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. D23 fuse circuit.

4. Open wire check (IG1B DR1(7. 5A) line)

   - 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. 36 - Refer to: VSA Modulator-Control Unit Connector for Inputs and Outputs (2017 2018 2019 2020)
   Test point 2	Body ground

   Is there battery voltage?

   YES 

   The IG1B DR1(7. 5A) wire is OK. Go to step 5.

   NO 

   Repair an open in the wire between the driver's under-dash fuse/relay box and the VSA modulator-control unit.

5. Open wire check (FSR+B line)

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

   - 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 (2017 2018 2019 2020)
   Test point 2	Body ground

   Is there battery voltage?

   YES 

   The FSR+B wire is OK. Go to step 6.

   NO 

   Repair an open in the wire between the main under-hood fuse box and the VSA modulator-control unit.

6. Open wire check (PGND line)

   - 1. 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. 3 - Refer to: VSA Modulator-Control Unit Connector for Inputs and Outputs (2017 2018 2019 2020)
   Test point 2	Body ground

   Is there continuity?

   YES 

   The PGND wire is OK. Go to step 7.

   NO 

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

7. F-CAN circuit communication check

   - 1. Reconnect the following connector.

   VSA modulator-control unit 38P connector

   - 2. Select FUNCTION TEST in the CAN gateway with the HDS, then select the F-CAN Bus Connected Unit Check.

   F-CAN Bus Connected Unit Check

   Which result is indicated?

   Gauge control module (Bus A) is Not Available

   Go to step 8.

   VSA modulator-control unit (Bus A) is Not Available

   Go to step 9.

   VSA modulator-control unit (Bus B) is Not Available

   Go to step 10.

   VSA modulator-control unit and gauge control module are Available

   Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting .

8. Open wire check (F-CAN A_H, F-CAN A_L lines) 1

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

   - 2. Disconnect the following connectors.

   Gauge control module connector A (32P)

   CAN gateway 16P connector

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

   Test condition	Vehicle OFF (LOCK) mode
   	Gauge control module connector A (32P): disconnected
   	CAN gateway 16P connector: disconnected
   Test circuit 1
   Test point 1	Gauge control module connector A (32P) (female terminals) No. 27: (1)
   Test point 2	CAN gateway 16P connector (female terminals) No. 3: (2)

   Test circuit 2
   Test point 1	Gauge control module connector A (32P) (female terminals) No. 28: (1)
   Test point 2	CAN gateway 16P connector (female terminals) No. 11: (2)

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

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

   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 gauge control module , then recheck. If the symptom/indication goes away with a known-good gauge control module, replace the original gauge control module .

   NO 

   Repair an open in the wire between the gauge control module and the CAN gateway.

9. Open wire check (F-CAN A_H, F-CAN A_L lines) 2

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

   - 2. Disconnect the following connectors.

   VSA modulator-control unit 38P connector

   CAN gateway 16P connector

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

   Test condition	Vehicle OFF (LOCK) mode
   	VSA modulator-control unit 38P connector: disconnected
   	CAN gateway 16P connector: disconnected
   Test circuit 1
   Test point 1	VSA modulator-control unit 38P connector No. 38 - Refer to: VSA Modulator-Control Unit Connector for Inputs and Outputs (2017 2018 2019 2020)
   Test point 2	CAN gateway 16P connector (female terminals) No. 3: (1)

   Test circuit 2
   Test point 1	VSA modulator-control unit 38P connector No. 26 - Refer to: VSA Modulator-Control Unit Connector for Inputs and Outputs (2017 2018 2019 2020)
   Test point 2	CAN gateway 16P connector (female terminals) No. 11: (1)

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

   Is there continuity?

   YES 

   The F-CAN A_H and F-CAN A_L wires are OK. Check for loose terminals and poor connections in the VSA modulator-control unit 38P connector. If they are OK, replace the VSA modulator-control unit .

   NO 

   Repair an open in the wire between the VSA modulator-control unit and the CAN gateway.

10. Open wire check (F-CAN B_H, F-CAN B_L lines)

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

    - 2. Disconnect the following connectors.

    VSA modulator-control unit 38P connector

    CAN gateway 16P connector

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

    Test condition	Vehicle OFF (LOCK) mode
    	VSA modulator-control unit 38P connector: disconnected
    	CAN gateway 16P connector: disconnected
    Test circuit 1
    Test point 1	VSA modulator-control unit 38P connector No. 31 - Refer to: VSA Modulator-Control Unit Connector for Inputs and Outputs (2017 2018 2019 2020)
    Test point 2	CAN gateway 16P connector (female terminals) No. 6: (1)

    Test circuit 2
    Test point 1	VSA modulator-control unit 38P connector No. 20 - Refer to: VSA Modulator-Control Unit Connector for Inputs and Outputs (2017 2018 2019 2020)
    Test point 2	CAN gateway 16P connector (female terminals) No. 14: (1)

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

    Is there continuity?

    YES 

    The F-CAN B_H and F-CAN B_L wires are OK. Check for loose terminals and poor connections in the VSA modulator-control unit 38P connector. If they are OK, replace the VSA modulator-control unit .

    NO 

    Repair an open in the wire between the VSA modulator-control unit and the CAN gateway.