Keyless Access System Symptom Troubleshooting Index
Symptom Diagnostic procedure Also check for Cannot select ON mode with keyless access or with the keyless remote touched the engine start/stop switch ENGINE CONTROL & FUEL SYSTEM - TESTING & TROUBLESHOOTING - Check the No. A17 (15 A), No. A29 (10 A), No. A2-1 (30 A), No. A2-3 (60 A), and the No. A2-7 (30 A) fuses in the under-hood fuse/relay box
- Check the No. B4 (15 A), No. B19 (7.5 A), and the No. B31 (10 A) fuses in the 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 touched the engine start/stop switch ENGINE CONTROL & FUEL SYSTEM - TESTING & TROUBLESHOOTING - Check the No. A17 (15 A), No. A29 (10 A), No. A2-1 (30 A), No. A2-3 (60 A), and the No. A2-7 (30 A) fuses in the under-hood fuse/relay box
- Check the No. B4 (15 A), No. B19 (7.5 A), and the 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
- 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
- Check the clutch pedal position switch A
- Keyless access control unit
- ATP-P line open
- Transmission range switch
- Park pin switch
- P-PIN_SW line open
- ATP-NP line open
- Clutch pedal position switch A
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 (tach)
- Check the park pin switch
- Gauge control module (tach)
- Keyless access control unit
- ECM/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 ENGINE CONTROL & FUEL SYSTEM - TESTING & TROUBLESHOOTING - No power to ECM/PCM
- No power to MICU
- Keyless access control unit
- Gauge control module (tach)
- Electric steering lock*
- Harness/connections
Keyless access indicator does not go off or does not come on ENGINE CONTROL & FUEL SYSTEM - TESTING & TROUBLESHOOTING - Gauge control module (tach)
- Keyless access control unit
- Harness/connections
Immobilizer indicator does not go off or does not come on ENGINE CONTROL & FUEL SYSTEM - TESTING & TROUBLESHOOTING - Gauge control module (tach)
- Keyless access control unit
- ECM/PCM
- Harness/connections
All the doors and the trunk will not lock and unlock ENGINE CONTROL & FUEL SYSTEM - TESTING & 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
The doors will not unlock or lock with the keyless remote, but will unlock or lock with the door outer handles ENGINE CONTROL & FUEL SYSTEM - TESTING & 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 ENGINE CONTROL & FUEL SYSTEM - TESTING & 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 ENGINE CONTROL & FUEL SYSTEM - TESTING & TROUBLESHOOTING - Gauge control module (tach)
- Driver's door switch
- Keyless access control unit
- MICU
- Harness/connections
The key-in reminder sounds in vehicle OFF mode when door is open ENGINE CONTROL & FUEL SYSTEM - TESTING & TROUBLESHOOTING - MICU
- Keyless access control unit
- Engine start/stop switch
- Harness/connections
*: With electric steering lock