Fuel Charging Wiring Harness Removal/Installation - 3.0L: Removal

Disconnect the negative battery cable. See BATTERY DISCONNECT .
Remove the upper intake manifold. See INTAKE MANIFOLD UPPER REMOVAL/INSTALLATION - 3.0L .

Fig 1: Disconnecting Engine Coolant Temperature Sensor, Water Temperature Indicator Sender Unit And Camshaft Position Sensor Electrical Connectors - 3.0L
Courtesy of MAZDA MOTORS CORP.
Disconnect the engine coolant temperature (ECT) sensor, the water temperature indicator sender unit and the camshaft position (CMP) sensor electrical connectors.

Fig 2: Disconnecting Crankshaft Position (CKP) Sensor Electrical Connector - 3.0L
Courtesy of MAZDA MOTORS CORP.
Disconnect the crankshaft position (CKP) sensor electrical connector.

Fig 3: Disconnecting Mass Air Flow (MAF) Sensor Electrical Connector - 3.0L
Courtesy of MAZDA MOTORS CORP.
Disconnect the mass air flow (MAF) sensor electrical connector.

Fig 4: Disconnecting Fuel Injectors Electrical Connectors - 3.0L
Courtesy of MAZDA MOTORS CORP.
Disconnect the fuel injectors electrical connectors.

Fig 5: Disconnecting Heated Oxygen Sensor Electrical Connectors - 3.0L
Courtesy of MAZDA MOTORS CORP.
Disconnect the heated oxygen sensor electrical connectors.

Fig 6: Disconnecting Oil Pressure Sensor Electrical Connector - 3.0L
Courtesy of MAZDA MOTORS CORP.
Disconnect the oil pressure sensor electrical connector.

Fig 7: Disconnecting Two Transmission Harness Electrical Connectors - 3.0L
Courtesy of MAZDA MOTORS CORP.
Disconnect the two transmission harness electrical connectors.

Fig 8: Disconnecting Powertrain Control Module (PCM) Electrical Connector - 3.0L
Courtesy of MAZDA MOTORS CORP.
Disconnect the powertrain control module (PCM) electrical connector.

Fig 9: Removing Nut - 3.0L
Courtesy of MAZDA MOTORS CORP.
Remove the nut.

Fig 10: Removing Stud Bolt And Ground Strap - 3.0L
Courtesy of MAZDA MOTORS CORP.
Remove the stud bolt and the ground strap.
Remove the engine control sensor wiring.