EPS Symptom Troubleshooting - EPS indicator does not go off (With ACC)

EPS indicator does not go off

NOTE:

The all sensor learn in the VSA system may not have properly completed.
The indicator also comes on when the reprogramming fails.
Do the reprogramming of the EPS control unit again.

Problem verification
-1. Start the engine.

-2. Check the EPS indicator.

Does the EPS indicator come on, then go off?

YES

Intermittent failure, the system is OK at this time.

NO

Go to step 2.
All DTCs check
-1. All DTCs check with the HDS.

All DTCs

Are there DTCs indicated?

YES

Go to indicated DTC's troubleshooting.

NO

Go to step 3.
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 4.

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 ground on the No. A41 fuse circuit.
Fuse check 2
-1. Check the following fuse.

Fuse No. A2-7

Is the fuse OK?

YES

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

NO

Replace the fuse. If the fuse blows again, repair the short to ground on the No. A2-7 fuse circuit.

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

-1. Disconnect the following connector.

EPS control unit connector B (6P)

-2. Turn the vehicle to the ON mode.

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

Test condition	Vehicle ON mode
	EPS control unit connector B (6P): disconnected
Test point 1	EPS control unit connector B (6P) No. 5
Test point 2	Body ground

Is there battery voltage?

YES

The IG1 ABS/VSA (or IG1 VSA/ABS) wire is OK. Go to step 6.

Repair an open in the +B EPS wire between the No. A41 fuse in the under-hood fuse/relay box and the EPS control unit.

Open wire check (+B EPS line)

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

-2. Disconnect the following connector.

EPS control unit connector A (2P)

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

Test condition	Vehicle OFF (LOCK) mode
	EPS control unit connector A (2P): disconnected
	EPS control unit connector B (6P): disconnected
Test point 1	EPS control unit connector A (2P) No. 1
Test point 2	Body ground

Is there battery voltage?

YES

The +B EPS wire is OK. Go to step 7.

Repair an open in the +B EPS wire between the No. A2-7 fuse in the under-hood fuse/relay box and the EPS control unit.

Open wire check (GND line)

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

Test condition	Vehicle OFF (LOCK) mode
	EPS control unit connector A (2P): disconnected
	EPS control unit connector B (6P): disconnected
Test point 1	EPS control unit connector A (2P) No. 2
Test point 2	Body ground

Is there continuity?

YES

The GND wire is OK. Go to step 8.

Repair an open in the GND wire between the EPS control unit and body ground (G302).

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

EPS control unit connector A (2P)

EPS control unit connector B (6P)

-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?

EPS control unit is Not Available for Bus B

Go to step 9.

Gauge control module is Not Available for Bus C

Go to step 10.

EPS control unit and gauge control module are Detected

Intermittent failure, the system is OK at this time. 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.

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

-1. Disconnect the following connectors.

EPS control unit connector B (6P)

CAN gateway 16P connector

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

Test condition	Vehicle OFF (LOCK) mode
	EPS control unit connector B (6P): disconnected
	CAN gateway 16P connector: disconnected
Test point 1	EPS control unit connector B (6P) No. 4
Test point 2	CAN gateway 16P connector (female terminals) No. 6:

Test point 1	EPS control unit connector B (6P) No. 1
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 wire and F-CAN B_L wire are OK. Check for poor connections or loose terminals at the CAN gateway and the EPS control unit connector. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, substitute a known-good the steering gearbox , then retest. If the indicators come on then go off after substitution, replace the original steering gearbox .

Repair an open in the F-CAN B_H wire and/or F-CAN B_L wire between the EPS control unit and the CAN gateway.

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

-1. Disconnect the following connectors.

Gauge control module connector A (32P)

CAN gateway 16P connector

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

Test condition	Vehicle OFF (LOCK) mode
	Gauge control module A (32P) connector: 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 wire and F-CAN C_L wire are OK. Check for poor connections or loose terminals at the CAN gateway and the gauge control module connector. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, substitute a known-good gauge control module , then retest. If the indicators come on then go off after substitution, replace the original gauge control module .

Repair an open in the F-CAN C_H wire and/or F-CAN C_L wire between the gauge control module and the CAN gateway.