G - EEC-IV Tests W/Codes

WARNING: This page is about a different car, the 1993 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Ignition System Wiring Diagram (4.6L)

Fig 2: Identifying HO2S Sensor Wiring Harness Connector Terminals

Fig 3: EEC-IV Wiring Diagram (1 of 3)

Fig 4: EEC-IV Wiring Diagram (2 of 3)

Fig 5: EEC-IV Wiring Diagram (3 of 3)