Removal and Installation

Remove the intake manifold.
NOTE:
- One connector is shown, the other five are similar.
Disconnect the six fuel injector electrical connectors.

Fig 1: Disconnecting Fuel Injector Electrical Connectors - 4.0L
Courtesy of MAZDA MOTORS CORP.
Remove the bolt.

Fig 2: Removing Bolt - 4.0L
Courtesy of MAZDA MOTORS CORP.
Disconnect the ignition coil electrical connector.

Fig 3: Disconnecting Ignition Coil Electrical Connector - 4.0L
Courtesy of MAZDA MOTORS CORP.
Disconnect the radio interference capacitor electrical connector.

Fig 4: Disconnecting Radio Interference Capacitor Electrical Connector - 4.0L
Courtesy of MAZDA MOTORS CORP.
Disconnect the engine coolant temperature sensor (ECT) and the water temperature indicator sender unit electrical connectors.

Fig 5: Disconnecting Engine Coolant Temperature Sensor And Water Temperature Indicator Sender Unit Electrical Connectors - 4.0L
Courtesy of MAZDA MOTORS CORP.
Disconnect the camshaft position (CMP) sensor electrical connector.

Fig 6: Disconnecting Camshaft Position Sensor Electrical Connector - 4.0L
Courtesy of MAZDA MOTORS CORP.
Remove the drive belt tensioner.
Disconnect the generator wiring and position the wiring aside.

Fig 7: Disconnecting Generator Wiring - 4.0L
Courtesy of MAZDA MOTORS CORP.
Disconnect the crankshaft position (CKP) sensor electrical connector.

Fig 8: Disconnecting Crankshaft Position (CKP) Sensor Electrical Connector - 4.0L
Courtesy of MAZDA MOTORS CORP.
Remove the wiring anchors and position the wiring aside.

Fig 9: Removing Wiring Anchors - 4.0L
Courtesy of MAZDA MOTORS CORP.
Raise and support the vehicle.
Disconnect the transmission portion of the wiring harness.
1. Disconnect the RH and the LH heated oxygen sensor (HO2S) electrical connectors.
2. Disconnect the transmission control connector.
3. Disconnect the output shaft speed (OSS) sensor electrical connector.
4. Disconnect the digital transmission range (TR) sensor electrical connector.
Fig 10: Disconnecting Digital Transmission Range (TR) Sensor Electrical Connector - 4.0L
Courtesy of MAZDA MOTORS CORP.
Disconnect the catalyst monitor sensor (HO2S) electrical connector.

Fig 11: Disconnecting Catalyst Monitor Sensor (HO2S) Electrical Connector - 4.0L
Courtesy of MAZDA MOTORS CORP.
Release the transmission/transfer case portion of the wiring harness from any routing clips or pushpins.
Route the transmission/transfer case portion of the wiring harness to the top of the engine.
Lower the vehicle.
Remove the wiring harness from the vehicle.
To install, reverse the removal procedure.