Electronic Control System Description - Suzuki 2006 SX4 Service Manual

3
1
9
10
4. 0.4 V
8. A/F sensor connector

Electronic Control System Description

The electronic control system consists of 1) various sensors which detect the state of engine and driving conditions, 2)
ECM which controls various devices according to the signals from the sensors and 3) various controlled devices.
Functionally, it is divided into the following sub systems:
• Fuel injection control system
• Ignition control system
• IMT valve control system
• Electric Throttle Body Control System
• Fuel pump control system
• Radiator cooling fan control system
• Evaporative emission control system
• A/F sensor heater control system
• HO2S heater control system
• A/C control system
• Immobilizer control system
• Generator control system
• Controller (computer) communication system
Especially, ECM, BCM, combination meter, TCM, ABS control module, 4WD control module and keyless start control
module intercommunicate by means of CAN (Controller Area Network) communication.
Engine General Information and Diagnosis:
7 8
1
2
6
10. Electrode
11. A/F signal processing circuit
12V
13
AFS-
14
4
AFS+
AFH+
AFH-
12. CPU
13. Lean
1A-13
5
5V
11 12
I7RW01110007-02
14. Rich
S6RW0C1101022