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HOMESERVICE MANUALSMAZDA2008TRIBUTE S SPORT, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 63 (ENGINE CONTROLS [SYSTEM & COMPONENT TESTING])FUEL SYSTEMFUEL CONTROLFUEL INJECTOR RESISTANCE - MAZDA6 (2.3L)
2008 Mazda Tribute s Sport, 4WD

Fuel Injector Resistance - Mazda6 (2.3L)

2008 Mazda Tribute s Sport, 4WDSECTION Fuel Injector Resistance - Mazda6 (2.3L)
WARNING: This page is about a different car, the 2003 Mazda Protege5, 2003 Mazda Protege, 2003 Mazda MX-5 Miata, 2003 Mazda MPV, and 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

  1. Resistance Inspection

    Disconnect fuel injector 2-pin harness connector. Using ohmmeter, measure resistance between fuel injector terminals. See FUEL INJECTOR RESISTANCE SPECIFICATIONS  table. If fuel injector resistance reading is as specified, go to next step. If resistance reading is not as specified, replace faulty fuel injector(s) as necessary.

  2. Open Circuit Inspection

    Check for continuity between following terminals:
    • No. 1 cylinder fuel injector harness connector terminal "B" and PCM 30-pin harness connector terminal No. 4Z.
    • No. 2 cylinder fuel injector harness connector terminal "B" and PCM 30-pin harness connector terminal No. 4W.
    • No. 3 cylinder fuel injector harness connector terminal "B" and PCM 30-pin harness connector terminal No. 4AD.
    • No. 4 cylinder fuel injector harness connector terminal "B" and PCM 30-pin harness connector terminal No. 4AA.
    • No. 1 cylinder fuel injector harness connector terminal "A" and main relay 4-pin harness connector terminal "C" through common connector.
    • No. 2 cylinder fuel injector harness connector terminal "A" and main relay 4-pin harness connector terminal "C" through common connector.
    • No. 3 cylinder fuel injector harness connector terminal "A" and main relay 4-pin harness connector terminal "C" through common connector.
    • No. 4 cylinder fuel injector harness connector terminal "A" and main relay 4-pin harness connector terminal "C" through common connector.

    If continuity is present, go to next step. If continuity is not present, repair open circuit in suspect wire or replace wire harness. See appropriate WIRING DIAGRAM under ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS.

  3. Short Circuit Inspection

    Check for continuity between following:
    • No. 1 cylinder fuel injector harness connector terminal "B" and ground.
    • No. 2 cylinder fuel injector harness connector terminal "B" and ground.
    • No. 3 cylinder fuel injector harness connector terminal "B" and body GND.
    • No. 4 cylinder fuel injector harness connector terminal "B" and ground.
    • No. 1 cylinder fuel injector harness connector terminal "A" and power supply.
    • No. 2 cylinder fuel injector harness connector terminal "A" and power supply.
    • No. 3 cylinder fuel injector harness connector terminal "A" and power supply.
    • No. 4 cylinder fuel injector harness connector terminal "A" and power supply.

    If continuity is present, repair short circuit in suspect wire or replace wire harness.

FUEL INJECTOR RESISTANCE SPECIFICATIONS

Application Ohms
MAZDA6 (2.3L) 11.4-12.6
Miata 12.0-13.0
MAZDA6 & MPV (3.0L) 13.1-14.5
Protege & Protege5 14.2-14.8
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.