Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 557 (FUEL SYSTEM (L3))FUEL INJECTOR INSPECTION [L3]CIRCUIT OPEN/SHORT INSPECTION
2010 Mazda 5 Sport, 2.3 L, Standard
Circuit Open/Short Inspection
2010 Mazda 5 Sport, 2.3 L, StandardSECTION Circuit Open/Short Inspection
WARNING: This page is about a different car, the 2008 Mazda 5. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [L3] .)
- Inspect the following wiring harnesses for open or short circuit (continuity check).
Open circuit
- If there is no continuity, there is an open circuit. Repair or replace the wiring, harness.
- Fuel injector No. 1 terminal A and PCM terminal 2BB
- Fuel injector No.2 terminal A and PCM terminal 2BC
- Fuel injector No.3 terminal A and PCM terminal 2BD
- Fuel injector No.4 terminal A and PCM terminal 2AZ
- Fuel injector No.1 terminal B and main relay terminal C
- Fuel injector No.2 terminal B and main relay terminal C
- Fuel injector No.3 terminal B and main relay terminal C
- Fuel injector No.4 terminal B and main relay terminal C
Short circuit
- If there is continuity, there is a short circuit. Repair or replace the wiring harness.
- Fuel injector No.1 terminal A and body ground
- Fuel injector No.1 terminal A and power supply
- Fuel injector N.2 terminal A and body ground
- Fuel injector No.2 terminal A and power supply
- Fuel injector No.3 terminal A and body ground
- Fuel injector No.3 terminal A and power supply
- Fuel injector No.4 terminal A and body ground
- Fuel injector No.4 terminal A and power supply
- Fuel injector No.1 terminal B and body ground
- Fuel injector No.2 terminal B and body ground
- Fuel injector No.3 terminal B and body ground
- Fuel injector No.4 terminal B and body ground
- If there is no continuity, there is an open circuit. Repair or replace the wiring, harness.
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:
- • 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.