Lexus IS250 IS220d GSE20 ALE20 - SLIDING ROOF
SLIDING ROOF SYSTEM - TERMINALS OF ECU
| CHECK SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY (SLIDING ROOF ECU) |
Disconnect the R6 ECU connector.
Measure the resistance and voltage of the wire harness side connector.
| Symbols (Terminal No.) | Wiring Color | Terminal Description | Condition | Specified Condition |
| B (R6-5) - E (R6-7) | L - W-B | +B Power supply | Always | 10 to 14 V |
| IG (R6-6) - E (R6-7) | V - W-B | Engine switch power supply | Engine switch off | Below 1 V |
| IG (R6-6) - E (R6-7) | V - W-B | Engine switch power supply | Engine switch on (IG) | 10 to 14 V |
| E (R6-7) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
Reconnect the R6 ECU connector.
Measure the voltage of the connector.
| Switch Position | Sliding Roof Position |
| 1 | Over stroke position |
| 2 | Slide fully open position (Comfort stop position) |
| 3 | Slide stop position [1] |
| 4 | Slide stop position [2] |
| 5 | Slide stop position [3] |
| 6 | Slide stop position [4] |
| 7 | Slide stop position [5] |
| 8 | Slide stop position [6] |
| 9 | Slide fully close position |
| 10 | Tilt fully open position |
| 11 | Auto fully closed, comfort stop position |
| Symbols (Terminal No.) | Wiring Color | Terminal Description | Condition | Specified Condition |
| CHK (R6-2) - E (R6-7) | LG - W-B | Sliding roof motor auto operation | Engine switch on (IG), sliding roof switch pushed. | 10 to 14 V |
| OPN (R6-9) - E (R6-7) | B - W-B | Sliding roof motor open | Engine switch off, sliding roof switch position [1], [2], [3] | Below 1 V |
| OPN (R6-9) - E (R6-7) | B - W-B | Sliding roof motor open | Engine switch on (IG), sliding roof switch position [1], [2], [3] | 10 to 14 V |
| CLS (R6-8) - E (R6-7) | SB - W-B | Sliding roof motor close | Engine switch off, sliding roof switch position [5], [6], [9], [10] | Below 1 V |
| CLS (R6-8) - E (R6-7) | SB - W-B | Sliding roof motor close | Engine switch on (IG), sliding roof switch position [5], [6], [9], [10] | 10 to 14 V |
| UP (R6-3) - E (R6-7) | O - W-B | Sliding roof motor up | Engine switch off, sliding roof switch position [2], [3], [4], [5], [6], [7] | Below 1 V |
| UP (R6-3) - E (R6-7) | O - W-B | Sliding roof motor up | Engine switch on (IG), sliding roof switch position [2], [3], [4], [5], [6], [7] | 10 to 14 V |
| DWN (R6-4) - E (R6-7) | Y - W-B | Sliding roof motor down | Engine switch off, sliding roof switch position [1], [2], [6], [7], [8], [9] | Below 1 V |
| DWN (R6-4) - E (R6-7) | Y - W-B | Sliding roof motor down | Engine switch on (IG), sliding roof switch position [1], [2], [6], [7], [8], [9] | 10 to 14 V |
If the result is not as specified, the ECU may have a malfunction.
LEXUS IS250, IS220d / GSE20 ALE20