Pin Voltage Tests
WARNING: This page is about a different car, the 2002 Lexus GS 430 and 2002 Lexus GS 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 ECM harness connector unless otherwise specified. See ECM PIN VOLTAGE CHART table. See Figure.
ECM PIN VOLTAGE CHART
| Terminal No. (Symbol), Wiring Color | Condition | Standard Voltage |
|---|---|---|
| E5-4 (STP) - E3-7 (E1), Green/White - Brown | Ignition Switch ON & Depress Brake Pedal | 10-16 Volts |
| E5-4 (STP) - E3-7 (E1), Green/White - Brown | Ignition Switch OFF Or Release Brake Pedal | Below 1 Volt |
| E6-8 (ST1-) - E3-7 (E1), Black/Blue - Brown | Ignition Switch ON & Release Brake Pedal | 10-16 Volts |
| E6-8 (ST1-) - E3-7 (E1), Black/Blue - Brown | Ignition Switch OFF Or Depress Brake Pedal | Below 1 Volt |
| E5-31 (CCS) - E3-7 (E1), Red/Yellow - Brown | Ignition Switch ON | 10-16 Volts |
| E5-31 (CCS) - E3-7 (E1), Red/Yellow - Brown | Ignition Switch ON, CANCEL Switch Held ON | 6.9-9.8 Volts |
| E5-31 (CCS) - E3-7 (E1), Red/Yellow - Brown | Ignition Switch ON, SET/COAST Switch Held ON | 4.7-6.9 Volts |
| E5-31 (CCS) - E3-7 (E1), Red/Yellow - Brown | Ignition Switch ON, RES/ACC Switch Held ON | 2.4-3.8 Volts |