Pin Voltage Tests
WARNING: This page is about a different car, the 2002 Lexus LX 470. 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 wireless door lock ECU connector unless otherwise specified. See CONNECTOR IDENTIFICATION . See WIRELESS DOOR LOCK ECU PIN VOLTAGE CHART table.
WIRELESS DOOR LOCK ECU PIN VOLTAGE CHART
| Terminal No. (Symbol), Wire Color | Condition | Standard Voltage |
|---|---|---|
| 1 (GND) - Body Ground, White/Black | Always | Below 1 Volt |
| 2 (BZR2) - 3 (BZR), Blue/Black - Blue | Buzzer Does Not Sound | Below 2 Volts |
| 2 (BZR2) - 3 (BZR), Blue/Black - Blue | Buzzer Sounds | 10-14 Volts |
| 4 (TRLY) - Body Ground, Green/Black | Taillight Lights Up | Below 2 Volts |
| 4 (TRLY) - Body Ground, Green/Black | Taillights Do Not Light Up | 10-14 Volts |
| 5 (T) - Body Ground, Green/White | Transmitter PANIC Switch ON | Below 1 Ohm |
| 5 (T) - Body Ground, Green/White | Transmitter PANIC Switch OFF | 1Milli Ohm Or Higher |
| 6 (LSWR) - Body Ground, Gray/Blue | Rear Door Unlock Detection Switch ON | Below 1 Volt |
| 6 (LSWR) - Body Ground, Gray/Blue | Rear Door Unlock Detection Switch OFF | 10-14 Volts |
| 7 (UL3) - Body Ground, Green/Black | Door Key Lock & Unlock Switch UNLOCK (Driver's Door) | Below 1.5 Volts |
| 7 (UL3) - Body Ground, Green/Black | Door Key Lock & Unlock Switch LOCK (Driver's Door) | 8-10 Volts |
| 8 (+B) - Body Ground, Green/Red | Always | 10-14 Volts |
| 10 (KSW) - Body Ground, Red/Black | Key Unlock Warning Switch ON (Ignition Key Is Inserted Into Key Cylinder) | Below 1 Volt |
| 10 (KSW) - Body Ground, Red/Black | Key Unlock Warning Switch OFF (Ignition Key Is Inserted Into Key Cylinder) | 10-14 Volt |
| 11 (LSWD) - Body Ground, Blue/Orange | Driver Door Unlock Detection Switch ON | Below 1 Volt |
| 11 (LSWD) - Body Ground, Blue/Orange | Driver Door Unlock Detection Switch OFF | 10-14 Volts |
| 12 (LSWP) - Body Ground, Blue/Orange | Passenger Door Unlock Detection Switch ON | Below 1 Volt |
| 12 (LSWP) - Body Ground, Blue/Orange | Passenger Door Unlock Detection Switch OFF | 10-14 Volts |
| 13 (IG) - Body Ground, Red/Blue | Turn The Ignition Switch OFF Or ACC | Below 1 Volt |
| 13 (IG) - Body Ground, Red/Blue | Turn The Ignition Switch ON | 10-14 Volts |
| 14 (CTY) - Body Ground, Red/White | Door Courtesy Switch ON | Below 1 Volt |
| 14 (CTY) - Body Ground, Red/White | Door Courtesy Switch OFF | 10-14 Volts |
| 15 (L) - Body Ground, Blue/White | Door Key Lock & Unlock Switch LOCK | Below 1 Volt |
| 15 (L) - Body Ground, Blue/White | Door Key Lock & Unlock Switch Are Not OFF Or UNLOCK | 8-10 Volts |