Circuit Open/Short Inspection: Notes

WARNING: This page is about a different car, the 2005 Mazda 6. 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).

Fig 1: Identifying EGR Valve And Main Relay Connectors
Courtesy of MAZDA MOTORS CORP.

Fig 2: Identifying PCM Connector California Emission Regulation Applicable ATX Model
Courtesy of MAZDA MOTORS CORP.

Fig 3: Identifying PCM Connector Except For California Emission Regulation Applicable ATX Model
Courtesy of MAZDA MOTORS CORP.