Daytime Running Light Main Relay Circuit

2004 Toyota Matrix XR, FWD, StandardSECTION Daytime Running Light Main Relay Circuit
WARNING: This page is about a different car, the 2003 Lexus IS 300 and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect connector from relay and backprobe from wiring harness side. See Figure. See INSPECTING DAYTIME RUNNING LIGHT MAIN RELAY CIRCUITΒ  table. If circuit test results are as specified, replace relay. If test results are not as specified, inspect and repair related circuit wiring. See WIRING DIAGRAMSΒ .

INSPECTING DAYTIME RUNNING LIGHT MAIN RELAY CIRCUIT

Tester Connection Condition Specified Condition
2 - Ground Light Control Switch OFF No Continuity
2 - Ground Light Control Switch TAIL Or HEAD Continuity
4 - Ground Light Control Switch OFF Or TAIL No Continuity
4 - Ground Light Control Switch HEAD Continuity
6 - Ground Headlight Dimmer Switch FLASH Continuity
8 - Ground Engine Running B+ Voltage
7 - Ground Constant Continuity
10 - Ground Constant Continuity
13 - Ground Headlight Dimmer Switch FLASH Or HI Continuity
12 - Ground Constant B+ Voltage
1 - Ground Ignition Switch OFF No Voltage
1 - Ground Ignition Switch ON B+ Voltage
9 - Ground Terminal No. 3 Ground B+ Voltage
11 - Ground Rear Fog Light Switch ON, Terminal No. 3 Ground B+ Voltage
5 - Ground Constant B+ Voltage
14 - Ground Terminal No. 5 Ground B+ Voltage
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.