CANNOT SELECT "ON" MODE WITH KEYLESS ACCESS AND WITH THE KEYLESS REMOTE TOUCHING THE ENGINE START/STOP SWITCH (9-Speed A/T)

-1. Do this procedure 10 times: Turn the vehicle to the ON mode.

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.

-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.

Does the system change to ON mode?

YES 

Keyless Access System - 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.

-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 10.

-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 15.

-1. Check for PCU DTCs with the HDS.

Are any DTCs indicated?

YES 

Troubleshoot the PCU DTCs.

NO 

Go to step 6.

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

Are any DTCs indicated?

YES 

Troubleshoot the keyless access/TPMS control unit DTCs.

NO 

Go to step 7.

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

Are any DTCs indicated?

YES 

Troubleshoot the backup control unit DTCs.

NO 

Go to step 8.

-1. Select KEYLESS TRANSMITTER from the BODY ELECTRICAL system select menu with the HDS, then select INSPECTION, then KEYLESS CHECK.

- 2. Do the KEYLESS CHECK with the HDS using the all keyless remotes.

Is KEYLESS ENTRY TRANSMITTER CODE IS RECEIVED indicated?

YES 

Go to step 9.

NO 

Do the Keyless Access System Registration , and recheck.

-1. Substitute a known-good keyless access/TPMS control unit.

- 2. Do the registration of the keyless access/TPMS 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 Keyless Access/TPMS Control Unit - Removal and Installation .

NO 

Replace the TCM - Removal and Installation .

-1. Do the DLC circuit troubleshooting.

DLC Circuit Troubleshooting (2016 2017 2018) or

DLC Circuit Troubleshooting (2019 2020 2021: With CAN Gateway) or

DLC Circuit Troubleshooting (2019 2020 2021: Without CAN Gateway) .

Is L-line OK?

YES 

Go to step 11.

NO 

Repair the L-line wire circuit.

-1. Do the Engine Start/Stop Switch Test

Is the engine start/stop switch OK?

YES 

Go to step 12.

NO 

Replace the Engine Start/Stop Switch - Removal and Installation .

-1. Disconnect the following connectors.

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

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

Is there continuity?

YES 

The SS1+ and SS2- wires are OK. Go to step 13.

NO 

Repair an open or high resistance in the wire.

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

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

Is there battery voltage?

YES 

The +B SMART wire is OK. Go to step 14.

NO 

Repair an open or high resistance in the wire. If wire is OK, check the under-dash fuse/relay box No. C3 (7.5 A) fuse circuit.

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

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

Is there continuity?

YES 

The SSB GND wire is OK. Go to step 15.

NO 

Repair an open or high resistance in the wire.

-1. Check for PCU DTCs with the HDS.

Are any DTCs indicated?

YES 

Troubleshoot the PCU DTCs.

NO 

Go to step 16.

-1. Disconnect the following connectors.

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

Is there battery voltage?

YES 

The IG1 VSA, +B BACKUP, and +B SMART wires are OK. Go to step 17.

NO 

Repair an open or high resistance in the wire.

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

Is there continuity?

YES 

The SGND wires are OK. Go to step 18.

NO 

Repair an open or high resistance in the ground wire or poor ground (G405).

-1. Disconnect the following connectors.

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

Is there continuity?

YES 

The IGN TRX and ESL PWR wires are OK. Go to step 19.

NO 

Repair an open or high resistance in the wire.

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

Is there continuity?

YES 

Repair a short to ground in the wire.

NO 

The wires between the TCM and body ground are OK. Go to step 20.

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

Is there battery voltage?

YES 

The +B wire is OK. Go to step 21.

NO 

Repair an open or high resistance in the wire.

-1. Disconnect the following connector.

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

Is there continuity?

YES 

The IG1 wire is OK. Go to step 22.

NO 

Repair an open or high resistance in the wire.

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

Is there continuity?

YES 

The GND1, GND2 wires are OK. Go to step 23.

NO 

Repair an open or high resistance in the wire or poor ground (G101).

-1. Substitute a known-good keyless access/TPMS control unit.

- 2. Reconnect these items:

- 3. Do the registration of the keyless access/TPMS 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. Recheck the system.

Is the system normal?

YES 

Replace the original Keyless Access/TPMS Control Unit - Removal and Installation .

NO 

Replace the TCM - Removal and Installation .