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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 Keyless Access System Symptom Troubleshooting - Cannot select ON mode with keyless access and with the keyless remote touching the engine start/stop switch 
  • No. A2-3 (60 A) and No. A29 (10 A) fuses in the under-hood fuse/relay box
  • No. B4 (15 A) and No. B31 (10 A) fuses in the under-dash fuse/relay box
  • Poor connections at the keyless access control unit
  • Gauge control module
  • Keyless access control unit
  • Electric steering lock*
  • Engine start/stop switch
Cannot select ON mode with keyless access, but can select ON mode with the keyless remote touching the engine start/stop switch 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. A2-3 (60 A) and No. A29 (10 A) fuses in the under-hood fuse/relay box
  • No. B4 (15 A) and No. B31 (10 A) fuses in the under-dash fuse/relay box
  • Keyless access control unit
  • LF antenna
  • Keyless remote
  • Low or weak keyless remote battery
Cannot select ON mode with the keyless remote touching the engine start/stop switch, but can select ON mode with keyless access Check the keyless access control unit
  • Keyless access control unit is not registered
  • Keyless access control unit registration
  • Keyless access control unit
  • MTR CONT line power short*
  • ESLID mismatch*
  • MTR CONT line open/short*
  • IGN TRX line open/short*
  • Not registered
  • Harness/connections
The mode changes between ACCESSORY mode and ON mode, but it does not change to OFF (LOCK) mode
  • Check the keyless access control unit
  • Check the park pin switch
  • Check the transmission range switch
  • Keyless access control unit
  • ATP-P line open
  • Transmission range switch
  • Park pin switch
  • P-PIN SW line open
The mode changes between ACCESSORY mode and ON mode, but it is difficult to change to OFF (LOCK) mode
  • Check the keyless access control unit
  • Check the gauge control module
  • Check the park pin switch
  • Gauge control module
  • Keyless access control unit
  • PCM
  • B CAN communication line open/short
  • F-CAN communication line open/short
  • Speed signal line open
  • Park pin switch
  • P-PIN SW line open

*: With electric steering lock

Symptom Diagnostic procedure Also check for
Engine start/stop switch does not work Check for DTCs. If any DTC is indicated, go to the DTC troubleshooting
  • Keyless access control unit
  • 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 keyless access control unit
  • Keyless access control unit
  • STS line open/short
  • Brake pedal position switch
  • STOP SW line open/short
The engine starts, but stalls immediately Keyless Access System Symptom Troubleshooting - The engine starts but stalls immediately 
  • No power to PCM
  • No power to MICU
  • Electric steering lock*
  • Harness/fuses
The doors will not unlock (lock is normal) with keyless access or with the keyless remote buttons, or the doors will not lock (unlock is normal) with keyless access or with the keyless remote buttons Keyless Access System Symptom Troubleshooting - The doors will not unlock (lock is normal) with keyless access or with the keyless remote buttons, or the doors will not lock (unlock is normal) with keyless access or with the keyless remote buttons 
  • MICU
  • Keyless remote
  • Door outer handle touch sensor/lock switch
  • Door switches
Keyless access indicator does not go off or does not come on Keyless Access System Symptom Troubleshooting - Keyless access indicator does not go off or does not come on 
  • Gauge control module
  • Keyless access control unit
  • Harness
Immobilizer indicator does not go off or does not come on Keyless Access System Symptom Troubleshooting - Immobilizer indicator does not go off or does not come on 
  • Gauge control module
  • Keyless access control unit
  • PCM
All the doors and the tailgate will not lock and unlock Keyless Access System Symptom Troubleshooting - All the doors and the tailgate will not lock and unlock 
  • Keyless access control unit
  • 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 Access System Symptom Troubleshooting - 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
  • MICU
  • Keyless access control unit
  • KEY SW line short
  • SS1 (+) line short
  • SS2 (-) line short
  • IG1A line short
  • ACC line short
  • B CAN communication line

*: With electric steering lock

Symptom Diagnostic procedure Also check for
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 Keyless Access System Symptom Troubleshooting - 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 handles
  • Keyless access control unit
  • Keyless remote
  • LF antenna
  • MICU
  • Not registered
  • Harness/fuses
The key-in reminder does not sound Keyless Access System Symptom Troubleshooting - The key-in reminder does not sound 
  • Gauge control module
  • Driver's door switch
  • Keyless access control unit
  • MICU
  • Harness
The key-in reminder sounds when in vehicle OFF mode door is open Keyless Access System Symptom Troubleshooting - The key-in reminder sounds in vehicle OFF mode when door is open 
  • MICU
  • Keyless access control unit
  • Engine start/stop switch
  • Harness

*: With electric steering lock