Suzuki GRAND VITARA JB416 Service Manual page 68

1A-50 Engine General Information and Diagnosis:
Terminal Wire
No. color
Engine coolant
PPL/
C37-24 temp. (ECT)
YEL
sensor signal
Intake air temp.
C37-25 LT GRN
(IAT) sensor signal
Mass air flow
C37-26 RED (MAF) sensor
signal
Ground for MAF
C37-27 BLU
sensor
BRN/ Generator control
C37-28
BLK signal output
BLK/
C37-29 Ground for ECM
YEL
BLK/
C37-30 Ground for ECM
ORN
BLK/ Ground for A/F
C37-31
YEL sensor heater
PNK/ Heater output of A/
C37-32
BLU F sensor
Intake manifold
tuning vacuum
GRY/
C37-33 solenoid valve
RED
output (for J20
engine)
Ground for A/F
RED/
C37-34 sensor adjusting
BLU
resistor
A/F sensor
RED/
C37-35 adjusting resistor
YEL
signal
Crankshaft position
C37-36 PNK (CKP) sensor (–)
(for J20 engine)
Circuit Normal voltage
3.3 – 3.8 V
1.38 – 1.72 V
0.40 – 0.53 V
3.18 – 3.67 V
1.32 – 1.65 V
0.46 – 0.60 V
0.5 – 1.0 V
1.3 – 1.8 V
("Reference
waveform No.17: ")
Below 0.3 V
*0 – 0.6 V
↑↓
5 – 7 V
("Reference
waveform No.5: " and
"Reference waveform
No.6: ")
Below 0.3 V
Below 0.3 V
Below 0.3 V
10 – 14 V
*0 – 1 V
↑↓
10 – 14 V
("Reference
waveform No.18: ")
10 – 14 V
0 – 1 V
("Reference
waveform No.19: ")
Below 0.3 V
0.15 – 4.82 V
0 – 1 V
*4 – 6 V
↑↓
–4 – –6 V
("Reference
waveform No.20: "
and "Reference
waveform No.21: ")
Condition
Ignition switch turned ON,
ECT at 0 °C, 32 °F.
Ignition switch turned ON,
ECT at 50 °C, 122 °F.
Ignition switch turned ON,
ECT at 100 °C, 212 °F.
Ignition switch turned ON,
IAT at 0 °C, 32 °F.
Ignition switch turned ON,
IAT at 40 °C, 104 °F.
Ignition switch turned ON,
IAT at 80 °C, 176 °F.
Ignition switch turned ON
with engine at stop.
When engine running at
specified idle speed after
warmed up.
Ignition switch turned ON.
Engine running at idle
speed, headlight switch
turned ON.
Ignition switch turned ON.
Ignition switch turned ON.
Ignition switch turned ON.
Ignition switch turned ON.
Engine running at idle
after warmed up engine.
Ignition switch turned ON.
Engine running at idle
after warmed up engine.
Ignition switch turned ON.
Ignition switch turned ON.
Ignition switch turned ON.
Engine running at idle
after warmed up engine.
Remarks
—
—
—
—
Output signal is active low
duty pulse. Duty ratio
varies depending on
vehicle condition.
—
—
—
—
Output signal is active low
duty pulse. Duty ratio
varies depending on
engine condition.
—
—
—
—
Output signal is sinusoidal
waveform.
Waveform frequency
varies depending on
engine speed. (30 (36 – 6)
pulses are generated par
1 crankshaft revolution.)