EPS indicator does not go off, and no DTCs are stored (With CAN Gateway (Without Auto Idle Stop System)) (2017 2018)

NOTE:

The all sensor learn in the VSA system may not have properly completed.

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. B2-1 (60 A)
Location	Main under-hood fuse box

Is the fuse OK?

YES

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

Replace the fuse. If the fuse blows again, repair a short to ground in the No. B2-1 (60 A) fuse circuit.

Fuse check 2

-1. Check the following fuse.

Fuse	No. D23 (7.5 A)
Location	Driver's under-dash fuse/relay box

Is the fuse OK?

YES

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

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 (7.5 A) fuse circuit.

Open wire check (IG1B DR1(7.5A) line)

-1. Disconnect the following connector.

EPS control unit connector A (11P)

- 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 A (11P): disconnected
Test point 1	EPS control unit connector A (11P) No. 9 - Refer to: EPS 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 6.

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

Open wire check (+B EPS 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
	EPS control unit connector A (11P): disconnected
Test point 1	EPS control unit connector A (11P) No. 2 - Refer to: EPS Control Unit Connector for Inputs and Outputs (2017 2018 2019 2020)
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 wire between the main under-hood fuse box and the EPS control unit.

Open wire check (EPS GND line)

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

Test condition	Vehicle OFF (LOCK) mode
	EPS control unit connector A (11P): disconnected
Test point 1	EPS control unit connector A (11P) No. 1 - Refer to: EPS Control Unit Connector for Inputs and Outputs (2017 2018 2019 2020)
Test point 2	Body ground

Is there continuity?

YES

The EPS GND wire is OK. Go to step 8.

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

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

EPS control unit connector A (11P)

- 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 (Bus A) is Not Available

Go to step 9.

Gauge control module (Bus A) is Not Available

Go to step 10.

EPS control unit and gauge control module are Available

Intermittent failure, the system is OK at this time.

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.

EPS control unit connector A (11P)

CAN gateway 24P connector

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

Test condition	Vehicle OFF (LOCK) mode
	EPS control unit connector A (11P): disconnected
	CAN gateway 24P connector: disconnected
Test circuit 1
Test point 1	EPS control unit connector A (11P) No. 10 - Refer to: EPS Control Unit Connector for Inputs and Outputs (2017 2018 2019 2020)
Test point 2	CAN gateway 24P connector (female terminals) No. 14:

Test circuit 2
Test point 1	EPS control unit connector A (11P) No. 11 - Refer to: EPS Control Unit Connector for Inputs and Outputs (2017 2018 2019 2020)
Test point 2	CAN gateway 24P connector (female terminals) No. 15:

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

Repair an open in the wire between the EPS control unit and the CAN gateway.

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.

Gauge control module connector A (32P)

CAN gateway 24P 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 24P connector: disconnected
Test circuit 1
Test point 1	Gauge control module connector A (32P) (female terminals) No. 27:
Test point 2	CAN gateway 24P connector (female terminals) No. 14:

Test circuit 2
Test point 1	Gauge control module connector A (32P) (female terminals) No. 28:
Test point 2	CAN gateway 24P connector (female terminals) No. 15:

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 loose terminals in the gauge control module connector A (32P) and the CAN gateway 24P connector. If they are OK, substitute a known-good gauge control module , then recheck. If the indicators come on then go off after substitution, replace the original gauge control module .

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