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Home >> Honda >> 2021 >> Insight EX >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Security System / Keyless Entry System - Testing & Troubleshooting >> Symptom Troubleshooting Index >> Keyless Access System
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Keyless Access System

NOTE: Before troubleshooting the keyless access system, make sure the fuses associated with the system is OK.
Symptom Troubleshooting Index

Symptom Diagnostic procedure Also check for
Cannot select ON mode with keyless access and with the keyless remote touching the power switch Symptom troubleshooting 
  • Poor connections at the body control module
  • Keyless remote
  • Body control module
  • Power switch
  • Harness/connections
Cannot select ON mode with keyless access, but can select ON mode with the keyless remote touching the power switch Symptom troubleshooting 
  • 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 power switch, but can select ON mode with keyless access Check the body control module
  • Body control module is not registered
  • Body control module
  • Not registered
  • IGN TRX line open/short
  • Harness/connections
The mode changes between ACCESSORY and ON, but it does not change to OFF (LOCK)
  • Check the body control module
  • Check the SBW shifter control module
  • Body control module
  • SBW shifter control module
  • ATP-P line open
The mode changes between ACCESSORY and ON, but it is difficult to change to OFF (LOCK)
  • Check the body control module
  • Check the gauge control module
  • Gauge control module
  • Body control module
  • PCM
  • B-CAN communication line open/short
  • F-CAN communication line open/short
  • Speed signal line open
Power switch does not work Check for DTCs. If any DTC is indicated, go to the DTC troubleshooting
  • ACC relay circuit
  • Body control module
  • Power switch
  • SS1(+) line short
  • SS2(-) line short
  • Harness/connections
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
  • BRK DIAG line open/short
The engine starts, but stalls immediately Symptom troubleshooting 
  • No power to PCM
  • No power to body control module
  • Body control module
  • Gauge control module
  • Harness/connections
Keyless access indicator does not go off or does not come on Symptom troubleshooting 
  • Gauge control module
  • Body control module
  • Harness/connections
Security indicator blinks Symptom troubleshooting 
  • Gauge control module
  • Body control module
  • PCM
  • Harness/connections
All the doors will not lock and unlock Symptom troubleshooting 
  • Body control module
  • LF antenna
  • Driver's door lock knob switch
  • Door outer handle touch sensor/lock sensor
  • 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 Symptom troubleshooting 
  • 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, but will unlock or lock with the keyless remote Symptom troubleshooting 
  • Door outer handle touch sensor/lock sensor
  • Body control module
  • Keyless remote
  • Not registered
  • Harness/connections