Cannot select ON mode with keyless access and with the keyless remote touching the engine start/stop switch (With Electric Steering Lock) (2019 2020 2021)

Keyless access system check 1
-1. Do this procedure 10 times: Turn the vehicle to the ON mode while turning the steering wheel to the left and to the right.

Does the system change to ON mode?

YES

Intermittent failure, the system is OK at this time. Check for loose or poor connection.

NO

Go to step 2.
Keyless access system check 2
-1. Touch the engine start/stop switch with the keyless remote. The buttons on the keyless remote should be facing you.

-2. Turn the vehicle to the ON mode while turning the steering wheel to the left and to the right.

Does the system change to ON mode?

YES

Go to keyless access system symptom troubleshooting "Cannot select ON mode with keyless access, but can select ON mode with the keyless remote touching the engine start/stop switch" .

NO

Go to step 3.
Keyless access system check 3
-1. Select KEYLESS ACCESS CONTROL UNIT from the ONE-PUSH START system select menu with the HDS, and enter SELF CHECK.

One-Push - KEYLESS ACCESS CONTROL UNIT - SELF CHECK

Does the system communicate with the HDS?

YES

Go to step 4.

NO

Go to step 11.
Keyless access system check 4
-1. Reboot the HDS.

-2. Select model on the HDS screen.

-3. When prompted by the HDS, select YES when asked if the vehicle has keyless access system, then press and hold the engine start/stop button for at least 2 minutes. This selects the forced ON mode.

Does the system change to forced ON mode?

YES

Go to step 5.

NO

Go to step 16.

PCU DTC check

-1. Check for PCU DTCs with the HDS.

DTC Description	DTC

Are any DTCs indicated?

YES

Troubleshoot the PCU DTCs.

Go to step 6.

Keyless access control unit DTC check

-1. Check for keyless access control unit DTCs with the HDS.

DTC Description	DTC

Are any DTCs indicated?

YES

Troubleshoot the keyless access control unit DTCs.

Go to step 7.

Backup control unit DTC check

-1. Check for backup control unit DTCs with the HDS.

DTC Description	DTC

Are any DTCs indicated?

YES

Troubleshoot the backup control unit DTCs.

Go to step 8.

Keyless access system check 5
-1. Do the keyless access remote check using the all keyless remotes .

Are the all keyless remotes OK?

YES

Go to step 9.

NO

Replace the keyless remote and recheck.
Keyless access system check 6
-1. Turn the vehicle to the OFF (LOCK) mode.

-2. Remove all the keyless remotes from inside the vehicle. Place the keyless remotes more than 1.5 m (4.9 ft) away from the vehicle.

-3. Disconnect the electric steering lock 12P connector.

-4. Reboot the HDS without pressing the engine start/stop button.

-5. Do the registration of the keyless access control unit according to the instructions on the HDS screen.

-6. Select REGISTRATION from the ONE-PUSH START system select menu with the HDS, then select REPLACE PCU/BACKUP CONTROL/KEYLESS ACCESS CONTROL UNIT.

-7. Reconnect the electric steering lock 12P connector.

-8. Take the keyless remote into the vehicle, and clear the PCU DTCs with the HDS.

-9. Do this procedure 10 times: Turn the vehicle to the ON mode while turning the steering wheel to the left and to the right.

Does the system change to ON mode?

YES

Intermittent failure, the system is OK at this time. Check for loose or poor connection.

NO

Go to step 10.
Keyless access control unit check
-1. Substitute a known-good keyless access control unit.

-2. Do the registration of the keyless access control unit according to the instructions on the HDS screen.

-3. Select REGISTRATION from the ONE-PUSH START system select menu with the HDS, then select REPLACE PCU/BACKUP CONTROL/KEYLESS ACCESS CONTROL UNIT.

-4. Recheck the system.

Is the system normal?

YES

Replace the original keyless access control unit .

NO

Replace the steering lock .
L-line check
-1. Do the DLC circuit troubleshooting .

Is L-line OK?

YES

Go to step 12.

NO

Repair an L-line wire circuit.
Engine start/stop switch operation check
-1. Do the engine start/stop switch test .

Is the engine start/stop switch OK?

YES

Go to step 13.

NO

Replace the engine start/stop switch .

Open wire check (SS1(+), SS2(-) lines)

-1. Disconnect the following connectors.

Engine start/stop switch 12P connector Keyless access control unit connector B (36P)

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

Test condition

Vehicle OFF (LOCK) mode Engine start/stop switch 12P connector: disconnected Keyless access control unit connector B (36P): disconnected

Test point 1	Engine start/stop switch 12P connector No. 7
Test point 2	Keyless access control unit connector B (36P) No. 10

Test point 1	Engine start/stop switch 12P connector No. 6
Test point 2	Keyless access control unit connector B (36P) No. 11

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

Is there continuity?

YES

The SS1(+) and SS2(-) wires are OK. Go to step 14.

Repair an open or high resistance in the wire.

Open wire check (+B SMART line)

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

Test condition	Vehicle OFF (LOCK) mode Engine start/stop switch 12P connector: disconnected Keyless access control unit connector B (36P): disconnected
Test point 1	Engine start/stop switch 12P connector No. 12
Test point 2	Body ground

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

Is there battery voltage?

YES

The +B SMART wire is OK. Go to step 15.

Repair an open or high resistance in the wire.

Open wire check (SSB GND line)

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

Test condition	Vehicle OFF (LOCK) mode Engine start/stop switch 12P connector: disconnected Keyless access control unit connector B (36P): disconnected
Test point 1	Engine start/stop switch 12P connector No. 1
Test point 2	Keyless access control unit connector B (36P) No. 25

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

Is there continuity?

YES

The GND wire is OK. Go to step 17.

Repair an open or high resistance in the wire.

PCU DTC check

-1. Check for PCU DTCs with the HDS.

DTC Description	DTC

Are any DTCs indicated?

YES

Troubleshoot the PCU DTCs.

Go to step 17.

Open wire check (+B BACK UP, +B SMART lines)

-1. Disconnect the following connector.

Keyless access control unit connector A (32P)

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

Test condition	Vehicle OFF (LOCK) mode Engine start/stop switch 12P connector Keyless access control unit connector A (32P): disconnected Keyless access control unit connector B (36P): disconnected
Test point 1	Keyless access control unit connector B (36P) No. 18
Test point 2	Body ground

Test point 1	Keyless access control unit connector A (32P) No. 1
Test point 2	Body ground

Is there battery voltage?

YES

The +B BACK UP, and +B SMART wires are OK. Go to step 18.

Repair an open or high resistance in the wire.

Open wire check (GND line)

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

Test condition	Vehicle OFF (LOCK) mode Engine start/stop switch 12P connector Keyless access control unit connector A (32P): disconnected Keyless access control unit connector B (36P): disconnected
Test point 1	Keyless access control unit connector A (32P) No. 17
Test point 2	Body ground

Test point 1	Keyless access control unit connector B (36P) No. 36
Test point 2	Body ground

Is there continuity?

YES

The GND wires are OK. Go to step 19.

Repair an open or high resistance in the ground wire or poor ground (G401).

Open wire check (between keyless access control unit and electric steering lock lines)

-1. Disconnect the following connectors.

Keyless access control unit connector C (20P)Electric steering lock 12P connector

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

Test condition

Vehicle OFF (LOCK) mode Engine start/stop switch 12P connector Keyless access control unit connector A (32P): disconnected Keyless access control unit connector B (36P): disconnected Keyless access control unit connector C (20P): disconnected Electric steering lock 12P connector: disconnected

Test circuit	Test point 1: Keyless access control unit connector	Test point 2: Electric steering lock 12P connector
MTR CUT1 (CONT)	B5	2
MTR CUT2 (IG1)	B6	4
ESL PWR	B33	5
IGN TRX	C3	6
ESL SW C	B4	9
ESL SW D	B2	10

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

Is there continuity?

YES

The wires between the keyless access control unit and electric steering lock are not open. Go to step 20.

Repair an open or high resistance in the wire.

Shorted wire check (between electric steering lock and body ground)

-1. Check for continuity between the following test points and body ground individually.

Test condition

Connector	Test circuit	Terminal
Electric steering lock 12P connector	MTR CUT1 (CONT)	2
	MTR CUT2 (IG1)	4
	ESL PWR	5
	IGN TRX	6
	ESL SW C	9
	ESL SW D	10

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

Is there continuity?

YES

Repair a short to ground in the wire.

The wires between the electric steering lock and body ground are OK. Go to step 21.

Open wire check (+B SMART line)

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

Test condition	Vehicle OFF (LOCK) mode Engine start/stop switch 12P connector Keyless access control unit connector A (32P): disconnected Keyless access control unit connector B (36P): disconnected Keyless access control unit connector C (20P): disconnected Electric steering lock 12P connector: disconnected
Test point 1	Electric steering lock 12P connector No. 3
Test point 2	Body ground

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

Is there battery voltage?

YES

The +B SMART wire is OK. Go to step 22.

Repair an open or high resistance in the wire.

Open wire check (GND line)

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

Test condition	Vehicle OFF (LOCK) mode Engine start/stop switch 12P connector Keyless access control unit connector A (32P): disconnected Keyless access control unit connector B (36P): disconnected Keyless access control unit connector C (20P): disconnected Electric steering lock 12P connector: disconnected
Test point 1	Electric steering lock 12P connector No. 7
Test point 2	Body ground

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

Is there continuity?

YES

The GND wire is OK. Go to step 23.

Repair an open or high resistance in the ground wire or poor ground (G401).

Keyless access control unit check
-1. Substitute a known-good keyless access control unit.

-2. Reconnect these items:

Engine start/stop switch 12P connector Keyless access control unit connector A (32P)Keyless access control unit connector B (36P)Keyless access control unit connector C (20P)Electric steering lock 12P connector

-3. Do the registration of the keyless access control unit according to the instructions on the HDS screen.

-4. Select REGISTRATION from the ONE-PUSH START system select menu with the HDS, then select REPLACE PCU/BACKUP CONTROL/KEYLESS ACCESS CONTROL UNIT.

-5. Turn the vehicle to the ON mode while turning the steering wheel to the left and to the right.

Does the system change to ON mode?

YES

Replace the original keyless access control unit .

NO

Replace the steering lock .