ABS Indicator, Brake System Indicator (Red), VSA Indicator, And Brake System Indicator (Amber) Do Not Go Off (Without Auto Idle Stop System) (2018-19)

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 (L4) (2018-19), or DLC Circuit Troubleshooting (V6, Without SH-AWD) (2018-19), or DLC Circuit Troubleshooting (V6, With SH-AWD) (2018-19) .

DTC check (VSA modulator-control unit)

- 1. Turn the vehicle to the ON mode.

- 2. Check for DTCs with the HDS.

DTC Description	DTC

Is DTC indicated?

YES

Go to indicated DTC's troubleshooting.

Go to step 2.

DTC check (CAN gateway system)

- 1. Check for CAN gateway system DTCs with the HDS.

DTC Description	DTC

Is DTC indicated?

YES

Go to indicated DTC's troubleshooting.

Go to step 3.

Gauge control module operation check
- 1. Do the gauge control module self-diagnostic function.

Is the gauge control module OK?

YES

Go to step 4.

NO

Replace the gauge control module .

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 5.

Replace the fuse. If the fuse blows again, repair a short to ground in the No. A1-4 (20 A) fuse circuit.

Fuse check 2

- 1. Check the following fuse.

Fuse	No. B10 (7.5 A)
Location	Under-dash fuse/relay box

Is the fuse OK?

YES

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

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. B10 (7.5 A) fuse circuit.

Open wire check (IG1 VSA/ABS) 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 (2018-19)
Test point 2	Body ground

Is there battery voltage?

YES

The IG1 VSA/ABS wire is OK. Go to step 7.

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

Open wire check (+B ABS/VSA FSR 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 (2018-19)
Test point 2	Body ground

Is there battery voltage?

YES

The FSR+B wire is OK. Go to step 8.

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

Open wire check (GND 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 (2018-19)
Test point 2	Body ground

Is there continuity?

YES

The PGND wire is OK. Go to step 9.

Repair an open in the wire between the VSA modulator-control unit and body ground (G206).

F-CAN circuit communication check
- 1. Reconnect the following connector.

VSA modulator-control unit 38P connector

- 2. Select the 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 10.

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

Go to step 11.

VSA modulator-control unit (Bus B) is Not Available (V6 engine)

Go to step 12.

VSA modulator-control unit and gauge control module are Available

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

Open wire check (F-CAN_H, F-CAN_L lines (L4 engine) or F-CAN A_H, F-CAN A_L lines (V6 engine)) 1

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

- 2. Disconnect the following connectors.

Gauge control module 32P connector

CAN gateway 16P connector

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

Test condition	Vehicle OFF (LOCK) mode
	Gauge control module 32P connector: disconnected
	CAN gateway 16P connector: disconnected
Test circuit 1
Test point 1	Gauge control module 32P connector No. 27 - Refer to: Gauge Control Module Connector for Inputs and Outputs (2018-19)
Test point 2	CAN gateway 16P connector (female terminals) No. 3:

Test circuit 2
Test point 1	Gauge control module 32P connector No. 28 - Refer to: Gauge Control Module Connector for Inputs and Outputs (2018-19)
Test point 2	CAN gateway 16P connector (female terminals) No. 11:

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

Is there continuity?

YES

The F-CAN_H and the F-CAN_L wires (L4 engine) or the F-CAN A_H and F-CAN A_L wires (V6 engine) 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 .

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

Open wire check (F-CAN_H, F-CAN_L lines (L4 engine) or F-CAN A_H, F-CAN A_L lines (V6 engine)) 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 (2018-19)
Test point 2	CAN gateway 16P connector (female terminals) No. 3:

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 (2018-19)
Test point 2	CAN gateway 16P connector (female terminals) No. 11:

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

Is there continuity?

YES

The F-CAN_H and the F-CAN_L wires (L4 engine) or the F-CAN A_H and F-CAN A_L wires (V6 engine) are OK. Replace the VSA modulator-control unit - Refer to: VSA Modulator-Control Unit Removal and Installation (With SH-AWD), or VSA Modulator-Control Unit Removal and Installation (Without SH-AWD) .

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

Open wire check (F-CAN B_H, F-CAN B_L lines (V6 engine))

- 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 (2018-19)
Test point 2	CAN gateway 16P connector (female terminals) No. 6:

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 (2018-19)
Test point 2	CAN gateway 16P connector (female terminals) No. 14:

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

Is there continuity?

YES

The F-CAN B_H and the F-CAN B_L wires (V6 engine) are OK. Replace the VSA modulator-control unit - Refer to: VSA Modulator-Control Unit Removal and Installation (With SH-AWD), or VSA Modulator-Control Unit Removal and Installation (Without SH-AWD) .

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