Circuit Open/Short Inspection [Z6] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
Open circuit
• If there is no continuity, the circuit is open. Repair or replace the 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 A
- Fuel injector No.2 terminal B and main relay terminal A
- Fuel injector No.3 terminal B and main relay terminal A
- Fuel injector No.4 terminal B and main relay terminal A
Short circuit
• If there is continuity, the circuit is short. Repair or replace the harness.
- Fuel injector No.1 terminal A and body GND
- Fuel injector No.2 terminal A and body GND
- Fuel injector No.3 terminal A and body GND
- Fuel injector No.4 terminal A and body GND

Circuit Open/Short Inspection [Z6]

1. Disconnect the PCM connector. (See
2. Inspect the following wiring harnesses for an open or short circuit (continuity check).
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