Pin Voltage Tests
WARNING: This page is about a different car, the 2003 Lexus IS 300 and 2002 Lexus IS 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 engine control module (ECM) harness connector unless otherwise specified. See ENGINE CONTROL MODULE (ECM) PIN VOLTAGE CHART table.
ENGINE CONTROL MODULE (ECM) PIN VOLTAGE CHART
| Terminal No. (Symbols), Wire Color | Condition | STD Voltage |
|---|---|---|
| E3-31 (CODE) - E6-7 (E1), Green/Black - Brown | Ignition Switch ON | 10-14 Volts |
| E4-23 (TXCT) - E6-7 (E1), Pink/Black - Brown | Ignition Switch ON | 10-14 Volts |
| E4-24 (RXCK) - E6-7 (E1), Violet - Brown | Ignition Switch ON | 10-14 Volts |