Pin Voltage Tests
WARNING: This page is about a different car, the 2003 Lexus RX 300 and 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.
Using a DVOM connected to ground, backprobe to measure voltage or resistance at appropriate terminal at moon roof ECU harness connector unless otherwise specified. See CONNECTOR IDENTIFICATION . See MOON ROOF ECU PIN VOLTAGE CHART table.
MOON ROOF ECU PIN VOLTAGE CHART
| Terminal No. (Symbols), Wiring Color | Condition | STD Voltage |
|---|---|---|
| M3-5 (B) - M3-7 (E), Blue/Orange - White/Black | Always | 10-14 Volts |
| M3-7 (E) - Body Ground, White/Black | Always | 10-14 Volts |
| M3-8 (IG) - M3-7 (E), Black/Red - White/Black | Ignition Switch ON | 10-14 Volts |
| M3-8 (IG) - M3-7 (E), Black/Red - White/Black | Ignition Switch OFF Or ACC | Less Than 1 Volt |
| M3-9 (OPN) - M3-7 (E), Pink - White/Black | Moon Roof Control Switch OPEN | 10-14 Volts |
| M3-9 (OPN) - M3-7 (E), Pink - White/Black | Others | Less Than 1 Volt |
| M3-10 (CLS) - M3-7 (E), Green/Yellow - White/Black | Moon Roof Control Switch CLOSE | 10-14 Volts |
| M3-10 (CLS) - M3-7 (E), Green/Yellow - White/Black | Others | Less Than 1 Volt |