Connector And Pin Information
| X250 (All Model Years) | ||||||||
|---|---|---|---|---|---|---|---|---|
| Terminal ID | 1 | 2 | 3 | 4 | 7 | 8 | 9 | 10 |
| Climate Seat Unit Location | Right Cushion | Right Cushion | Right Backrest | Right Backrest | Left Cushion | Left Cushion | Left Backrest | Left Backrest |
| Wiring Color - Left Hand Drive Vehicles | GY-BU - Grey/Blue | BU - Blue | BU-BN - Blue/Brown | WH - White | YE-BU - Yellow/Blue | BU-OG - Blue/Orange | GY-VT - Grey/Violet | WH-VT - White/Violet |
| Wiring Color - Right Hand Drive Vehicles | YE-BU - Yellow/Blue | BU-OG - Blue/Orange | GY-VT - Grey/Violet | WH-VT - White/Violet | GY-BU - Grey/Blue | BU - Blue | BU-BN - Blue/Brown | WH - White |
- If any unit reads greater than 10 ohms, replace only that defective unit
- If all units read less than 10 ohms but faults are still suspected, do not replace any units. Refer to step 4 below
- As a final check, when a faulty unit has been identified strip the seat to access unit connector, Refer To: Seats (Removal & Installation) and re-check ohm reading to confirm greater than 10 ohms prior to removing unit
- In cases where the above diagnostic routine does NOT identify a failed unit, please refer to "Over Temperature and Fluid/Air Leak Diagnostics" below. Also check for any live technical service bulletins referring to the seat climate system