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Home >> Honda >> 2021 >> Pilot EX, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Security System Keyless Entry System - Testing & Troubleshooting (2 Of 2) >> Symptom Troubleshooting Index >> Keyless Access System (2016 2017 2018)
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Keyless Access System (2016 2017 2018)

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. Refer to:
 
Cannot Select ON Mode With Keyless Access And With The Keyless Remote Touching The Engine Start/Stop Switch (9-Speed A/T)
  • Check the No. A26 (10 A) fuse in the under-hood fuse/relay box
  • Check the No. B1-3 (60 A), No. B1-5 (30 A), No. B1-6 (30 A), and No. B10 (10 A) fuses in the auxiliary under-hood fuse/relay box
  • Check the No. C3 (7.5 A) fuse in the under-dash fuse/relay box
  • Poor connections at the keyless access/TPMS control unit
  • Keyless remote
  • Keyless access/TPMS control unit
  • Electric steering lock*1
  • 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. Refer to:
 
Cannot Select ON Mode With Keyless Access, But Can Select ON Mode With The Keyless Remote Touching The Engine Start/Stop Switch .
  • Check the No. A26 (10 A) fuse in the under-hood fuse/relay box
  • Check the No. B1-3 (60 A), No. B1-5 (30 A), No. B1-6 (30 A), and No. B10 (10 A) fuses in the auxiliary under-hood fuse/relay box
  • Check the No. C3 (7.5 A) fuse in the under-dash fuse/relay box
  • Keyless access/TPMS control 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/TPMS control unit
  • Keyless access/TPMS control unit is not registered
  • Keyless access/TPMS control unit
  • MTR CONT line power short*1
  • ESLID mismatch*1
  • MTR CONT line open/short*1
  • IGN TRX line open/short*3
  • Not registered
  • Harness/connections
The mode changes between ACC and ON, but it does not change to OFF
  • Check the keyless access/TPMS control unit
  • Check the park pin switch
  • Check the TCM*3
  • Check the transmission range switch*2
  • Keyless access/TPMS control unit
  • ATP-P line open
  • TCM*3
  • Transmission range switch*2
  • Park pin switch
  • P-PIN SW line open
The mode changes between ACC and ON, but it is difficult to change to OFF
  • Check the keyless access/TPMS control unit
  • Check the gauge control module
  • Check the park pin switch
  • Gauge control module
  • Keyless access/TPMS 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/TPMS 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/TPMS control unit
  • Keyless access/TPMS control unit
  • STS line open/short
  • Brake pedal position switch
  • STOP SW line open/short
The engine starts, but stalls immediately Symptom troubleshooting. Refer to:
 
The Engine Starts But Stalls Immediately .
  • No power to PCM
  • No power to MICU
  • Keyless access/TPMS control unit
  • Gauge control module
  • Electric steering lock*1
  • Harness/connections
Keyless access indicator does not go off or does not come on Symptom troubleshooting. Refer to:
 
Keyless Access Indicator Does Not Go OFF Or Does Not Come ON .
  • Gauge control module
  • Keyless access/TPMS control unit
  • Harness/connections
Immobilizer indicator does not go off or does not come on Symptom troubleshooting. Refer to:
 
Immobilizer Indicator Does Not Go OFF Or Does Not Come ON .
  • Gauge control module
  • Keyless access/TPMS control unit
  • PCM
  • Harness/connections
All the doors will not lock and unlock Symptom troubleshooting. Refer to:
 
All The Doors Will Not Lock And Unlock
  • Keyless access/TPMS 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 Symptom troubleshooting. Refer to:
 
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/TPMS 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. Refer to:
 
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
  • Keyless access/TPMS control unit
  • Keyless remote
  • MICU
  • Not registered
  • Harness/connections
The key-in reminder does not sound Symptom troubleshooting. Refer to:
 
The Key-In Reminder Does Not Sound .
  • Gauge control module
  • Driver's door switch
  • Keyless access/TPMS control unit
  • MICU
  • Harness/connections
The key-in reminder sounds in vehicle OFF mode when door is open Symptom troubleshooting. Refer to:
 
The Key-In Reminder Sounds In Vehicle Off Mode When Door Is Open
  • MICU
  • Keyless access/TPMS control unit
  • Engine start/stop switch
  • Harness/connections

*1: With electric steering lock

*2: 6-speed A/T

*3: 9-speed A/T