Diagram 3. Engine Control System (ECS) harness connections
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1 - ECU; 2 - ECU harness connector to instrument panel harness; 3 - main fuse box; 4 - speed sensor; 5 - Rough road sensor; 6 - oil pressure warning light sensor; 7 - throttle position sensor; 8 - coolant temperature sensor; 9 - coolant temperature gauge sensor; 10 - mass air flow sensor; 11 - idle speed controller; 12 - Electric fuel pump relay; 13 - Electric fuel pump power supply circuit fuse (15 A); 14 - ignition relay; 15 - Ignition relay fuse (15 A); 16 - ECU power supply circuit fuse (7.5 A); 17 - crankshaft position sensor; 18 - oxygen concentration control sensor; 19 - phase sensor; 20 - knock sensor; 21 - Evaporative Emissions Blow-off Solenoid Valve; 22 - Oxygen concentration diagnostic sensor; 23 - ignition coils; 24 - spark plugs; 25 - injectors; 26 - connector of ignition coil wiring harness to ECU harness; 27 - ECU harness connector to ignition coil harness; 28 - ECU harness connector to injector harness; 29 - connector of injector harness to ECU harness; A - to the battery terminal; B1, B2 - ignition system harness grounding points; C1 - ignition coil harness ground point