Keyless Access System Symptom Troubleshooting Index (2014 2015 2016 2017)

Symptom	Diagnostic procedure	Also check for
Cannot select ON mode with keyless access and with the keyless remote touching the engine start/stop switch	Symptom troubleshooting	Check the No. B3-1 (60 A), No. B3-2 (60 A), No. B3-4 (30 A), and the No. B3-6 (30 A) fuses in the main under-hood fuse box Check the No. C19 (7.5 A) and the No. C16 (10 A) fuses in the under-hood fuse/relay box Check the No. D30 (10 A), No. D21 (20 A), No. D11 (10 A), and the No. D13 (7.5 A) fuses in the driver's under-dash fuse/relay box Poor connections at the keyless access control unit Keyless remote Keyless access control unit Electric steering lock 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	Symptom troubleshooting	Check the No. B3-1 (60 A), No. B3-2 (60 A), No. B3-4 (30 A), and the No. B3-6 (30 A) fuses in the main under-hood fuse box Check the No. C19 (7.5 A) and the No. C16 (10 A) fuses in the under-hood fuse/relay box Check the No. D30 (10 A), No. D21 (20 A), No. D11 (10 A), and the No. D13 (7.5 A) fuses in the driver's under-dash fuse/relay box Keyless access control unit RF unit 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 keyless access control unit	Keyless access control unit is not registered 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 ACC and ON, but it does not change to OFF	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

Symptom	Diagnostic procedure	Also check for
The mode changes between ACC and ON, but it is difficult to change to OFF	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
Engine start/stop switch does not work	Check for DTCs. If any DTC is indicated, go to the DTC troubleshooting	ACC relay circuit 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 +B STOP line open/short
The engine starts, but stalls immediately	Symptom troubleshooting	No power to PCM No power to MICU Keyless access control unit Gauge control module Electric steering lock Harness/connections
Keyless access indicator does not go off or does not come on	Symptom troubleshooting	Gauge control module Keyless access control unit Harness/connections
Immobilizer indicator does not go off or does not come on	Symptom troubleshooting	Gauge control module Keyless access control unit PCM Harness/connections
All the doors and the trunk lid will not lock and unlock	Symptom troubleshooting	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

Symptom	Diagnostic procedure	Also check for
The doors will not unlock or lock with the keyless remote, but will unlock or lock with the door outer handles	Symptom troubleshooting	Keyless remote battery dead Keyless remote MICU Keyless access control unit 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	Symptom troubleshooting	Door outer handle touch sensor/lock switch Keyless access control unit Keyless remote MICU Not registered Harness/connections
The key-in reminder does not sound	Symptom troubleshooting	Gauge control module Driver's door switch Keyless access control unit MICU Harness/connections
The key-in reminder sounds in vehicle OFF mode when door is open	Symptom troubleshooting	MICU Keyless access control unit Engine start/stop switch Harness/connections