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 12 volt battery terminal is disconnected, or by removing the No. A29 (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 |
| B1641 | 41 | ◦ | RF2 unit transmitter/receiver circuit malfunction |
| B1646 | 46 | ◦ | Driver door antenna circuit open or short |
| B1648 | 48 | ◦ | Front passenger door antenna circuit open or short |
| B1658 | 58 | ◦ | Trunk/tailgate/rear bumper antenna circuit open or short |
| B1660 | 60 | ◦ | Front interior antenna circuit open or short |
| B1664 | 64 | ◦ | Rear interior antenna circuit open or short |
| B1668 | 68 | ◦ | Trunk room antenna circuit open or short |
| 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.