Suzuki Swift Sport 2004 Service & Repair Manual page 234

1A-184 Engine General Information and Diagnosis:
Terminal Wire
No. color
A/C refrigerant
E23-55 RED pressure sensor
signal
E23-56 —
A/C evaporator
outlet air temp.
WHT/
E23-57 sensor signal
BLK
(manual A/C
model)
E23-58 —
E23-59 —
BRN/ Main power supply
E23-60
WHT relay output
Reference waveform No.1
Fuel injector signal (1) with engine idling
Measurement
CH1: "C37-2" to "C37-58"
terminal
Oscilloscope CH1: 20 V/DIV
setting TIME: 1 ms/DIV
• After warmed up to normal
Measurement
operating temperature
condition
• Engine at specified idle speed
Circuit Normal voltage
1.38 – 1.52 V
2.15 – 2.38 V
2.67 – 2.95 V
— —
3.4 – 3.7 V
2.5 – 2.8 V
1.7 – 2.0 V
— —
— —
10 – 14 V
0 – 2 V
Condition
Engine running, A/C
switch OFF and blower
selector at OFF position,
A/C refrigerant pressure:
800 kPa (116 psi)
Engine running, A/C
switch ON and blower
selector at 1st position or
more, A/C refrigerant
pressure: 1400 kPa (203
psi)
Engine running, A/C
switch ON and blower
selector at 1st position or
more, A/C refrigerant
pressure: 1800 kPa (261
psi)
—
Ignition switch turned ON
at A/C evaporator outlet
temperature 0 °C (32 °F).
Ignition switch turned ON
at A/C evaporator outlet
temperature 15 °C (59 °F).
Ignition switch turned ON
at A/C evaporator outlet
temperature 30 °C (86 °F).
—
—
Ignition switch turned OFF.
Ignition switch turned ON.
2. Fuel injection pulse width: 2 – 4 msec.
3. 10 – 14 V
Remarks
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I4RS0B110050-01