Keyless Access System Symptom Troubleshooting Index
Symptom
Diagnostic procedure
Also check for
Cannot select ON mode with keyless access and with the keyless remote touching the engine start/stop switch
Check the No. A1-7 (125 A), No. A1-5 (30 A), No. A2-2 (30 A), No. A2-4 (60 A), and No. A18 (10 A) fuses in the under-hood fuse/relay box
Check the No. B30 (10 A) fuse in the under-dash fuse/relay box
Poor connections at the body control module
Keyless remote
Body control module
Electric steering lock*2
Engine start/stop switch
Harness/connections
Cannot select ON mode with keyless access, but can select ON mode with the keyless remote touching the engine start/stop switch
Body control module
LF antenna
Keyless remote
Low or weak keyless remote battery
Harness/connections
Cannot select ON mode with the keyless remote touching the engine start/stop switch, but can select ON mode with keyless access
Check the body control module
Body control module is not registered
Body control module
MTR CONT line power short*2
ESL ID mismatch*2
MTR CONT line open/short*2
IGN TRX line open/short*2
Not registered
Harness/connections
The mode changes between ACCESSORY and ON, but it does not change to OFF
Check the body control module
Check the park pin switch
Check the transmission range switch*1
Body control module
ATP-P line open*1
Transmission range switch*1
Park pin switch*1
P-PIN SW line open*1
The mode changes between ACCESSORY and ON, but it is difficult to change to OFF
Check the body control module
Check the gauge control module
Check the park pin switch*1
Gauge control module
Body control module
PCM
B-CAN communication line open/short
F-CAN communication line open/short
Speed signal line open
Park pin switch*1
P-PIN SW line open*1
Engine start/stop switch does not work
Check for DTCs. If any DTC is indicated, go to the DTC troubleshooting
ACC relay circuit
Body control module
Engine start/stop switch
SS1(+) line short
SS2(-) line short
Harness
Engine does not crank (power supply is normal)
Check the brake pedal position switch
Check the body control module
Body control module
STS line open/short
Brake pedal position switch
STOP SW line open/short
The engine starts, but stalls immediately
No power to PCM
No power to body control module
Body control module
Gauge control module
Electric steering lock*2
Harness/connections
Security indicator blinks
Gauge control module
Body control module
PCM
Harness/connections
All the doors will not lock and unlock
Body control module
LF antenna
Driver's door lock knob switch
Door outer handle touch sensor/lock switch
Door lock actuators
Keyless remote
Low or weak keyless remote battery
Not registered
The doors will not unlock or lock with the keyless remote, but will unlock or lock with the door outer handles
Keyless remote battery dead
Keyless remote
Body control module
Harness/connections
B-CAN communication line
The doors will not unlock or lock with the door outer handle touch sensor or lock switch, but will unlock or lock with the keyless remote
Door outer handle touch sensor/lock switch
Body control module
Keyless remote
Not registered
Harness/connections

*1: CVT
*2: With electric steering lock