Circuit Open/Short Inspection

WARNING: This page is about a different car, the 2010 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the PCM connectors.
Disconnect the MAF/IAT sensor connector.
Inspect the following wiring harnesses for open or short circuit. (Continuity inspection)

Fig 1: Identifying MAF/IAT And PCM Sensor Connector Terminals

G05981139

Courtesy of MAZDA MOTORS CORP.

Open circuit

If there is no continuity in the following wiring harnesses, there is an open circuit. Repair or replace the wiring harness.
- MAF/IAT sensor terminal D and PCM terminal 1 AT
- MAF/IAT sensor terminal E and PCM terminal 1AR

Short circuit

If there is continuity in the following wiring harnesses, there is a short circuit. Repair or replace the wiring harness.
- MAF/IAT sensor terminal D and body ground
- MAF/IAT sensor terminal D and power supply