Horn 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 connector on the junction block side. See CONNECTOR IDENTIFICATION . See INSPECTING HORN RELAY CIRCUIT table. If the circuit is as specified, inspect the circuits connected to other parts.
INSPECTING HORN RELAY CIRCUIT
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| 1 - Ground | Constant | B+ Voltage |
| 2 - Ground | Horn Switch ON | Continuity |
| 5 - Ground | Constant | B+ Voltage |