Headlight Control Relay Circuit
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.
Remove the relay from the engine room junction block and inspect the relay. See CONNECTOR IDENTIFICATION . See INSPECTING HEADLIGHT CONTROL RELAY CIRCUIT table. If the circuit is as specified, inspect the circuits connected to other parts.
INSPECTING HEADLIGHT CONTROL RELAY CIRCUIT
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 1 - Ground | Constant | B+ Voltage |
| 3 - Ground | Light Control Switch HEAD | Continuity |
| 4 - Ground | Constant | B+ Voltage |