LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2001 >> 4Runner Base >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Body Control Systems >> System Tests >> Test No. 5: Headlight Relay Circuit >> Testing
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Test No. 5: Headlight Relay Circuit: Testing

  1. Check operation of headlight relay. See HEADLIGHT RELAY  under COMPONENT TESTS. If headlight relay operates properly, go to next step. If headlight relay is defective, replace headlight relay.
  2. Check for defective connectors and wiring between battery and terminals No. 2 and 4 of headlight relay. Check continuity between terminal No. 3 of headlight relay and terminal No. 3 (Red wire) of body ECU 8-pin harness connector "B". See WIRING DIAGRAMS . Repair wiring or connectors as necessary. If connectors and wiring are okay, test body ECU and replace as needed.
scientia non olet · About LEMON Manuals