
Pressure temperature sensor Injector
Crank angle sensor Ignition coil
Coolant temperature sensor Primary relay
Throttle position sensor Stepper motor
Oxygen sensor Fuel pump
Cam position sensor Cooling fan motor
Battery (voltage signal) Air conditioner
Knock sensor Malfunction Indication Light
A/C condenser temperature sensor Canister control valve
Failure diagnosis
Electronic Injection System Control Diagram
MR479Q. MR479QA. MR481QA.JL481Q engines use ECU controlled electronic ignition system without distributors, and are ignited in groups and sequence.
Electronic control unit (ECU) is composed of input, output channels and a microcomputer. Signals collected by sensors are first sent to the input channel
for processing and A/D transformation. Then the microcomputer performs complex operation on the processed signals and sends control signal through
the output channel to actuators to initiate the electronic fuel supply and ignition. Specific system control functions are illustrated in the chart below:
1. Fuel injection volume
2. Ignition timing
3. Idle control
4. Fuel pump control
5. Cooling fan
6. A/C cutoff when accelerating
7. Canister fuel duty ratio
8. Self diagnosis
9. A/C relay
105
Part II
Summary of Contents for MK Series
Page 1: ......
Page 2: ......
Page 98: ...Setting of the Airflow Selector LHD 91 Part I ...
Page 157: ...Maintenance Schedule inspect adjust replace if necessary replace 150 Part V ...
Page 158: ...Maintenance Schedule inspect adjust replace if necessary replace 151 Part V ...
Page 159: ...Maintenance Schedule inspect adjust replace if necessary replace 152 Part V ...
Page 160: ...Maintenance Schedule inspect adjust replace if necessary replace 153 Part V ...
Page 162: ...155 Part V ...
Page 186: ...No 2 Fuse box is in the dashboard 179 Part VII ...
Page 187: ......
Page 188: ......