CHECK SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU)
Disconnect the X5 ECU connector.
Measure the resistance and voltage according to the value(s) in the table below.
| Terminal No. (Symbols) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| X5-1 (B) - X5-2 (E) | B - W-B | +B power supply | Always | 11 to 14 V |
| X5-5 (IG) - X5-2 (E) | L - W-B | Power supply | Power switch OFF | Below 1 V |
| X5-5 (IG) - X5-2 (E) | L - W-B | Power supply | Power switch ON (IG) | 11 to 14 V |
| X5-7 (OPN) - X5-2 (E) | G - W-B | Sliding roof motor open | SLIDE OPEN switch OFF | 10 kΩ or higher |
| X5-7 (OPN) - X5-2 (E) | G - W-B | Sliding roof motor open | SLIDE OPEN switch ON | Below 1 Ω |
| X5-9 (CLS) - X5-2 (E) | Y - W-B | Sliding roof motor close | SLIDE CLOSE switch OFF | 10 kΩ or higher |
| X5-9 (CLS) - X5-2 (E) | Y - W-B | Sliding roof motor close | SLIDE CLOSE switch ON | Below 1 Ω |
| X5-10 (UP) - X5-2 (E) | R - W-B | Sliding roof motor up | TILT UP switch OFF | 10 kΩ or higher |
| X5-10 (UP) - X5-2 (E) | R - W-B | Sliding roof motor up | TILT UP switch ON | Below 1 Ω |
| X5-8 (DWN) - X5-2 (E) | B - W-B | Sliding roof motor down | TILT DOWN switch OFF | 10 kΩ or higher |
| X5-8 (DWN) - X5-2 (E) | B - W-B | Sliding roof motor down | TILT DOWN switch ON | Below 1 Ω |
| X5-2 (E) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
Reconnect the X5 ECU connector.
Measure the voltage according to the value(s) in the table below.
| Terminal No. (Symbols) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| X5-7 (OPN) - X5-2 (E) | G - W-B | Sliding roof motor open | Power switch ON (IG), SLIDE OPEN switch OFF | Below 1 V |
| X5-7 (OPN) - X5-2 (E) | G - W-B | Sliding roof motor open | Power switch ON (IG), SLIDE OPEN switch ON | 11 to 14 V |
| X5-9 (CLS) - X5-2 (E) | Y - W-B | Sliding roof motor close | Power switch ON (IG), SLIDE CLOSE switch OFF | Below 1 V |
| X5-9 (CLS) - X5-2 (E) | Y - W-B | Sliding roof motor close | Power switch ON (IG), SLIDE CLOSE switch ON | 11 to 14 V |
| X5-10 (UP) - X5-2 (E) | R - W-B | Sliding roof motor up | Power switch ON (IG), TILT UP switch OFF | Below 1 V |
| X5-10 (UP) - X5-2 (E) | R - W-B | Sliding roof motor up | Power switch ON (IG), TILT UP switch ON | 11 to 14 V |
| X5-8 (DWN) - X5-2 (E) | B - W-B | Sliding roof motor down | Power switch ON (IG), TILT DOWN switch OFF | Below 1 V |
| X5-8 (DWN) - X5-2 (E) | B - W-B | Sliding roof motor down | Power switch ON (IG), TILT DOWN switch ON | 11 to 14 V |
If the result is not as specified, the ECU may have a malfunction.