Suzuki Liana RH418, Supplementary Service Manual

Page: 87 / 371

Engine General Information and Diagnosis: 1A-74
Terminal No. Circuit Normal Voltage Condition
C41-1 Ground Below 0.3 V Ignition switch turned ON
C41-2 Ground Below 0.3 V Ignition switch turned ON
C41-3 Ground Below 0.3 V Ignition switch turned ON
C41-4 EVAP canister purge valve
10 – 14 V Ignition switch turned ON with engine stop
*0 – 0.6 V
↑↓
10 – 14 V
(Reference waveform
No.22)
Engine running and vehicle running over 40 km/h,
25 ml/h (Output signal is 10 Hz duty pulse. Duty
ratio varies depending on vehicle condition.)
C41-5
Power steering pressure
switch
10 – 14 V Ignition switch ON
0 – 1.5 V
With engine running at idle, turning steering
wheel to the right or left as far as it stops,
repeating it a few times
C41-6 Idle air control valve
*0 – 2 V
↑↓
8 – 14 V
(Reference waveform
No.5)
Engine running at idling with after warming up.
(Output signal is active low duty pulse. Duty ratio
varies as engine load and desired idle speed.)
C41-7 Heater of HO2S
10 – 14 V Ignition switch ON
*0 – 2 V
↑↓
13.5 – 14.8 V
(Reference waveform
No.3 and No.4
Engine running at idling with after warming up.
(Output signal is active low duty pulse. Duty ratio
varies depending on engine condition.)
C41-8 Fuel injector No.4
10 – 14 V Ignition switch ON
*0 – 0.6 V
↑↓
10 – 14 V
(Reference waveform
No.8, No.9 and No.24)
Engine running.
(Output signal is active low pulse. Pulse
frequency varies depending on engine speed.)
C41-9 Fuel injector No.1
10 – 14 V Ignition switch ON
*0 – 0.6 V
↑↓
10 – 14 V
(Reference waveform
No.8, No.12, No.23 and
No.24)
Engine running.
(Output signal is active low pulse. Pulse
frequency varies depending on engine speed.)
C41-10 Sensor ground Below 0.3 V Ignition switch turned ON
C41-11
Camshaft position (CMP)
sensor
*0 – 6 V
↑↓
4 – 6 V
(Reference waveform
No.15)
Engine running at idling with after warming up.
(Pulse frequency varies depending on engine
speed. (6 pulses are generated par 1 camshaft
revolution.))
C41-12 Generator control signal Min. 4.8 V Ignition switch ON
C41-13 Heated oxygen sensor
*Deflects between over
0.5 V and under 0.45 V
(Reference waveform
No.3 and No.4
While engine running at 2,000 r/min. for 1 min. or
longer after warmed up
C41-14
Engine coolant
temperature (ECT) sensor
1.75 – 2.1 V Ignition switch turned ON at ECT 40
°
C (104
°
F)
0.67 – 0.84 V Ignition switch turned ON at ECT 80
°
C (176
°
F)
0.32 – 0.41 V Ignition switch turned ON at ECT 110
°
C (230
°
F)
C41-15
Intake air temperature
(IAT) sensor
3.18 – 3.67 V Ignition switch turned ON at IAT 0
°
C (32
°
F)
1.34 – 1.63 V Ignition switch turned ON at ECT 40
°
C (104
°
F)
0.47 – 0.59 V Ignition switch turned ON at ECT 80
°
C (176
°
F)
C41-16 Throttle position sensor
0.5 – 1.0 V
Ignition switch ON
Throttle valve at idle position
3.5 – 4.5 V
Ignition switch ON
Throttle valve at full open position
C41-17 — — —