Circuit Open/Short Inspection; Open Circuit; Short Circuit - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
1. Remove the variable intake-air solenoid valve. (See
REMOVAL/INSTALLATION
2. Inspect airflow between the ports under the following conditions.
• If not as specified, replace the variable intake-air solenoid valve.
• If as specified, carry out the "Circuit Open/Short Inspection".

Open circuit

• If there is no continuity, the circuit is open. Repair or replace the wiring harness.
- Variable intake-air solenoid valve terminal A and PCM terminal 2AJ
- Variable intake-air solenoid valve terminal B and main relay terminal

Short circuit

• If there is continuity, the circuit is shorted. Repair or replace the wiring harness.
- Variable intake-air solenoid valve terminal B and body GND
- Variable intake-air solenoid valve terminal A and power supply
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INTAKE-AIR SYSTEM

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See
REMOVAL/INSTALLATION
2. Inspect the following wiring harness for open
or short (continuity check).
- automotive repair manuals website
B3E011318740W01
PCM
[LF].)