Keyless Access System Symptom Troubleshooting Index (KA/KC model) (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. C5 (7.5 A) and No. C16 (10 A) fuses in the under-hood fuse/relay box
- Check the No. D12 (20 A) and the No. D30 (10 A) fuses in the driver's under-dash fuse/relay box
- Poor connections at the keyless access/TPMS control unit
- Keyless remote
- Keyless access/TPMS control unit
- 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. C5 (7.5 A) and No. C16 (10 A) fuses in the under-hood fuse/relay box
- Check the No. D12 (20 A) and the No. D30 (10 A) fuses in the driver's under-dash fuse/relay box
- Keyless access/TPMS control unit
- 2-way transceiver *
- 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
- 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 transmission range switch
- Check the park pin switch
|
- Keyless access/TPMS control unit
- ATP-P line open
- Transmission range switch
- Park pin switch
- P-PIN SW line open
|
*: With remote engine start
| 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/TPMS control unit
- Check the gauge control module
|
- 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/connections
|
| 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 |
- No power to PCM
- No power to MICU
- Keyless access/TPMS control unit
- Gauge control module
- Harness/connections
|
| Keyless access indicator does not go off or does not come on |
Symptom troubleshooting |
- Gauge control module
- Keyless access/TPMS control unit
- Harness/connections
|
| Immobilizer indicator does not go off or does not come on |
Symptom troubleshooting |
- Gauge control module
- Keyless access/TPMS control unit
- PCM
- Harness/connections
|
| All the doors will not lock and unlock |
Symptom troubleshooting |
- 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 |
- Keyless remote battery dead
- Keyless remote
- MICU
- Keyless access/TPMS control unit
- Harness/connections
- B-CAN communication line
|
*: With remote engine start
| 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 |
Symptom troubleshooting |
- Door outer handle touch sensor/lock switch
- Keyless access/TPMS control unit
- Keyless remote
- MICU
- Not registered
- Harness/connections
|
*: With remote engine start