Self-Diagnostic Function
The keyless access system has a self-diagnostic function. If any malfunction and DTC are stored in the keyless access/TPMS control unit, the keyless access indicator flashes.
When malfunction is detected, the keyless access indicator flashes until the vehicle is turned to the OFF (LOCK) mode.
The DTC is cleared when the battery terminal is disconnected, or by removing the No. C16 fuse .
| DTC | Keyless access indicator | Description |
|---|---|---|
| B1601 | o | Keyless Access Control Unit Internal (CPU) Error |
| B1602 | o | Keyless Access Control Unit Internal (EEPROM) Error |
| B12C5 | o | Engine Start/Stop Switch Failure |
| B12D0 | o | Power Control Unit IG1A Circuit Error |
| B12D1 | o | Power Control Unit IG1B Circuit Error |
| B12D2 | o | Power Control Unit IG2 Circuit Error |
| B12D3 | o | Power Control Unit IG Latch Circuit Error |
| B1640 | o | RF1 Antenna Not Connected or Malfunction |
| B1645 | o | Driver's Door LF Antenna Circuit Short |
| B1646 | o | Driver's Door LF Antenna Circuit Open |
| B1647 | o | Passenger's Door LF Antenna Circuit Short |
| B1648 | o | Passenger's Door LF Antenna Circuit Open |
| B1649 | o | Driver Side Rear Passenger Door Antenna Circuit Short |
| B1650 | o | Driver Side Rear Passenger Door Antenna Circuit Open |
| B1651 | o | Passenger Side Rear Passenger Door Antenna Circuit Short |
| B1652 | o | Passenger Side Rear Passenger Door Antenna Circuit Open |
| B1659 | o | Front Interior LF Antenna Circuit Short |
| B1660 | o | Front Interior LF Antenna Circuit Open |
| B1663 | o | Rear Interior LF Antenna Circuit Short |
| B1664 | o | Rear Interior LF Antenna Circuit Open |
| B12F3 | o | Power Control Unit Lost Communication With Transmission Control Unit |
| B1926 | o | Backup Control Antenna Open or Short |
| B1931 | o | Backup Control Unit No Response |
NOTE: When the engine start/stop switch button is pressed and the mode changes to ON, the keyless access indicator comes on when any malfunction is detected.