Self-Diagnostic Function
WARNING: This page is about a different variant/trim than selected.
The keyless access system has a self-diagnostic function. If any malfunction is stored in the keyless access control unit, the DTC codes can be determined by the keyless access indicator blinking pattern.
Short the SCS line with the HDS, then press the engine start/stop button to select the ON mode. The keyless access indicator starts to show the DTCs if any DTCs are stored.
The DTC is cleared when the battery terminal is disconnected, or by removing the No. A21 (10 A) fuse from the under-hood fuse/relay box.
| DTC | Keyless access indicator | Description |
|---|---|---|
| B1601 | 1 | Keyless access ECU CPU error |
| B1602 | 2 | Keyless access ECU EEPROM error |
| B1632 | 32 | MTRCONT signal error |
| B1640 | 40 | RF unit circuit malfunction |
| B1645 | 45 | Driver's Door LF Antenna Circuit Short |
| B1646 | 46 | Driver's Door LF Antenna Circuit Open |
| B1647 | 47 | Passenger's Door LF Antenna Circuit Short |
| B1648 | 48 | Passenger's Door LF Antenna Circuit Open |
| B1657 | 57 | Rear Bumper LF Antenna Circuit Short |
| B1658 | 58 | Rear Bumper LF Antenna Circuit Open |
| B1659 | 59 | Front Interior LF Antenna Circuit Short |
| B1660 | 60 | Front Interior LF Antenna Circuit Open |
| B1663 | 63 | Rear Interior LF Antenna Circuit Short |
| B1664 | 64 | Rear Interior LF Antenna Circuit Open |
| B1667 | 67 | Rear Shelf LF Antenna Circuit Short |
| B1668 | 68 | Rear Shelf LF Antenna Circuit Open |
| U0199 | 7 | Keyless access - P/W communication error |
| U1280 | 100 | Keyless access ECU bus line error |
| U1281 | 5 | Keyless access control unit lost communication with MICU |
| U128D | 10 | Keyless access control unit lost communication with gauge control module |
NOTE: When the engine start/stop button is pressed and the mode changes to ON, the keyless access indicator comes on when any malfunction is detected.