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HOMESERVICE MANUALSMAZDA2008TRIBUTE S SPORT, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 494 (LIGHTING SYSTEM)DISCHARGE HEADLIGHT SYSTEM INSPECTIONTERMINAL LAYOUTINSPECTION PROCEDURE
2008 Mazda Tribute s Sport, 4WD

Inspection procedure

2008 Mazda Tribute s Sport, 4WDSECTION Inspection procedure
WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
INSPECTION PROCEDURE CHART

STEP INSPECTION ACTION
1 INSPECT POWER SUPPLY CIRCUIT OF DISCHARGE HEADLIGHT CONTROL MODULE 
  • Disconnect the discharge headlight control module connector.
  • Turn the headlight switch to the HEADLIGHT (LO) position.
  • Measure the voltage at discharge headlight control module connector (harness-side) terminal C.
  • Is the voltage approx. 12 V? 
 Yes Go to Step 6.
No Go to the next step.
2 INSPECT FUSE 
  • Turn the headlight switch to the OFF position.
  • Remove the HEAD LOW R 15 A fuse (RH) or HEAD LOW L 15 A fuse (LH).
  • Inspect the fuses.
  • Are the fuses normal?
 Yes Go to the next step.
No Replace the fuse.
3 INSPECT HEADLIGHT RELAY  Yes Go to the next step.
No Replace the headlight relay. (See RELAY LOCATION .)
4 INSPECT LIGHT SWITCH  Yes Go to the next step.
No Replace the light switch. (See LIGHT SWITCH REMOVAL/INSTALLATION .)
5 INSPECT WIRING HARNESS BETWEEN BATTERY AND DISCHARGE HEADLIGHT CONTROL MODULE 
  • Disconnect the negative battery cable.
  • Inspect for continuity between the following terminals:
    • Battery (positive terminal) and headlight relay (main fuse block terminal A)
    • Headlight relay terminal 3A and HEAD LOW R 15 A fuse (RH) terminal G
    • Headlight relay terminal 3A and HEAD LOW L 15 A fuse (LH) terminal G
    • HEAD LOW R 15 A fuse (RH) terminal H and discharge headlight control module terminal C
    • HEAD LOW L 15 A fuse (LH) terminal F and discharge headlight control module terminal C
  • Are the wiring harnesses normal?
 Yes Go to the next step.
No Replace the related wiring harness.
6 INSPECT WIRING HARNESS BETWEEN DISCHARGE HEADLIGHT CONTROL MODULE AND GROUND 
  • Inspect wiring harness between discharge headlight control module terminal D and ground for following:
    • Short to power supply
    • Open circuit
  • Inspect the headlight relay. (See RELAY INSPECTION .)
  • Is the wiring harness normal?
 Yes Go to the next step.
No Replace the related wiring harness.
7 VERIFY WHETHER MALFUNCTION IS IN DISCHARGE HEADLIGHT BULB OR DISCHARGE HEADLIGHT CONTROL MODULE 
  • Install any other discharge headlight bulb (low-beam). (See HEADLIGHT BULB REMOVAL/INSTALLATION .)
  • Connect the discharge headlight control module connector.
  • Turn the headlight switch to the HEADLIGHT (LO) position.
  • Does the headlight (low-beam) illuminate?
 Yes System inspection completed.
No Replace the front combination light. (See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION .)
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

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

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