Electronic Control System - Suzuki Ignis Service Manual

ELECTRONIC CONTROL SYSTEM

The electronic control system consists of 1) various sensors which detect the state of engine and driving condi-
tions, 2) ECM which controls various devices according to the signals from the sensors and 3) various controlled
devices.
Functionally, it is divided into nine sub systems :
• Fuel injection control system
• Idle speed control system
• Fuel pump control system
• A/C control system (if equipped)
• Radiator fan control system
• EGR system (if equipped)
• Evaporative emission control system
• Oxygen sensor heater control system (if equipped)
• Ignition control system
Also, with A/T model, ECM sends throttle valve opening signal and coolant temp. signal to transmission control
module to control A/T.
INFORMATION SENSORS
1. MAP sensor
2. TP sensor
3. IAT sensor
4. ECT sensor
5. Heated oxygen sensor-1 (if equipped)
5-1. Heated oxygen sensor-2 (if equipped)
6. VSS
7. Transmission range switch (A/T)
8. Battery
9. CMP sensor
10. CKP sensor
11. Fuel level sensor (gauge) (in fuel tank)
12. Stop lamp switch
13. Knock sensor (if equipped)
CONTROL DEVICES
a : Fuel injector
b : EVAP canister purge valve
c : Fuel pump relay
d : EGR valve (step motor) (if equipped)
e : Malfunction indicator lamp
f : Ignition coil assembly
g : Radiator fan control relay
h : IAC valve
i : Immobilizer indicator lamp
ENGINE AND EMISSION CONTROL SYSTEM 6E1-7
OTHERS
A : ECM
B : Main relay
C : EVAP canister
D : Monitor connector
E : Data link connector
F : A/C EVAP thermistor (if equipped)
G : TCM (A/T)