Suzuki GRAND VITARA Owner's Manual page 269

Terminal Wire
No. color
Electric load
current sensor
C37-9 BLU
signal (for J20
engine)
CO adjusting
GRN/ resistor signal (for
C37-10
WHT J20 engine, if
equipped)
Oxygen signal of
C37-11 RED heated oxygen
sensor-2
A/C refrigerant
GRY/ pressure sensor
C37-12
BLK signal (if equipped
with A/C)
GRN/ EVAP canister
C37-13
BLK purge valve output
Output of 5 V
power source for
MAP sensor, A/C
refrigerant
pressure sensor,
GRY/
C37-14 electric load
RED
current sensor (for
J20 engine) and
CO adjusting
resistor (if
equipped)
BLK/
C37-15 Ground for ECM
ORN
Circuit Normal voltage
0.5 – 1.0 V
1.3 – 1.7 V
1.8 – 2.4 V
0 – 5 V
4 – 5 V
*Approx. 0.15 V
("Reference
waveform No.7: " and
"Reference waveform
No.8: ")
1.38 – 1.52 V
2.15 – 2.38 V
2.67 – 2.95 V
10 – 14 V
*0 – 0.6 V
↑↓
10 – 14 V
("Reference
waveform No.9: ")
4.5 – 5.5 V
Below 0.3 V
Engine General Information and Diagnosis:
Condition
Ignition switch turned ON.
Run engine at 2000 rpm,
headlight switch turned
ON.
Run engine at 2000 rpm,
headlight switch ON and
blower selector at HI
position.
Ignition switch turned ON.
Ignition switch turned ON.
Engine running at idle
after warmed up engine.
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
with engine at stop.
Set EVAP canister purge
valve at 52% by using
"Misc Test" of scan tool.
Ignition switch turned ON.
Ignition switch turned ON.
1A-214
Remarks
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Output signal is active low
duty pulse. Duty ratio
varies depending on
vehicle condition.
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