VSA System Symptom Troubleshooting - ABS indicator, brake system indicator (red), VSA indicator, and brake system indicator (amber) do not go off(With ACC)

WARNING: This page is about a different car, the 2022 Honda Accord, 2021 Honda Accord, 2020 Honda Accord, 2019 Honda Accord, and 2018 Honda Accord. However, it is still accessible from the selected car via links, so may be relevant.

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

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

-2. Check the following fuse.

Fuse No. A41

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 the OFF (LOCK) mode. If the fuse blows again, repair the short to body ground on the No. A41 fuse circuit.
Fuse check 2
-1. Check the following fuse.

Fuse No. A2-3

Is the fuse OK?

YES

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

NO

Replace the fuse. If the fuse blows again, repair the short to body ground on the No. A2-3 fuse circuit.

Open wire check (IG1 ABS/VSA (or IG1 VSA/ABS) line)

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

-2. Disconnect the following connector.

VSA modulator-control unit 46P connector

-3. Turn the vehicle to the ON mode.

-4. Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode
	VSA modulator-control unit 46P connector: disconnected
Test point 1	VSA modulator-control unit 46P connector No. 13
Test point 2	Body ground

Is there battery voltage?

YES

The IG1 ABS/VSA (or IG1 VSA/ABS) wire is OK. Go to step 5.

Repair an open in the wire between the No. A41 fuse 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 46P connector: disconnected
Test point 1	VSA modulator-control unit 46P connector No. 1
Test point 2	Body ground

Is there battery voltage?

YES

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

Repair an open in the wire between the No. A2-3 fuse 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 46P connector: disconnected
Test point 1	VSA modulator-control unit 46P connector No. 4
Test point 2	Body ground

Is there continuity?

YES

The GND wire is OK. Go to step 7.

Repair an open in the wire between the VSA modulator-control unit and body ground (G401).

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

VSA modulator-control unit 46P 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?

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

Go to step 8.

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

Go to step 9.

Gauge control module (Bus C) is Not Available

Go to step 10.

VSA modulator-control unit and gauge control module are Detected

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

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

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

-2. Disconnect the following connectors.

CAN gateway 16P connector

VSA modulator-control unit 46P connector

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

Test condition	Vehicle OFF (LOCK) mode
	CAN gateway 16P connector: disconnected
	VSA modulator-control unit 46P connector: disconnected
Test point 1	CAN gateway 16P connector (female terminals) No. 3:
Test point 2	VSA modulator-control unit 46P connector No. 20

Test point 1	CAN gateway 16P connector (female terminals) No. 11:
Test point 2	VSA modulator-control unit 46P connector No. 21

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 in the VSA modulator-control unit 46P connector. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the VSA modulator-control unit .

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)

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

-2. Disconnect the following connectors.

CAN gateway 16P connector

VSA modulator-control unit 46P connector

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

Test condition	Vehicle OFF (LOCK) mode
	CAN gateway 16P connector: disconnected
	VSA modulator-control unit 46P connector: disconnected
Test point 1	CAN gateway 16P connector (female terminals) No. 6:
Test point 2	VSA modulator-control unit 46P connector No. 24

Test point 1	CAN gateway 16P connector (female terminals) No. 14:
Test point 2	VSA modulator-control unit 46P connector No. 25

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 in the VSA modulator-control unit 46P connector. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the VSA modulator-control unit .

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

Open wire check (F-CAN C_H, F-CAN C_L lines)

-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 point 1	Gauge control module connector A (32P) No. 20
Test point 2	CAN gateway 16P connector (female terminals) No. 5:

Test point 1	Gauge control module connector A (32P) No. 21
Test point 2	CAN gateway 16P connector (female terminals) No. 13:

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

Is there continuity?

YES

The F-CAN C_H and F-CAN C_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 .

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