Suzuki Grand Vitara JB416 / JB420 / JB419. Manual — part 71
1A-231 Engine General Information and Diagnosis: For Petrol Engine Model
E23-49
PNK
A/C compressor
relay output (if
equipped with A/C)
10 – 14 V
Engine running, A/C
switch OFF and blower
selector at OFF position.
—
0 – 1 V
Engine running, A/C
switch ON and blower
selector at 1st position or
more.
E23-50
BLU/
ORN
Throttle actuator
control relay output
0 – 1 V
Ignition switch turned ON.
—
E23-51
BLU/
YEL
Ground for
accelerator pedal
position (APP)
sensor (sub)
Below 0.3 V
Ignition switch turned ON.
—
E23-52
BLU/
GRN
Accelerator pedal
position (APP)
sensor (sub) signal
0.30 – 0.44 V
Ignition switch turned ON
and accelerator pedal at
idle position after warmed
up engine.
—
1.74 – 2.17 V
Ignition switch turned ON
and accelerator pedal at
full depressed position
after warmed up engine.
E23-53
ORN/
BLU
Output for 5 V
power source of
accelerator pedal
position (APP)
sensor (sub)
4.5 – 5.5 V
Ignition switch turned ON.
—
E23-54
ORN
Ground for
accelerator pedal
position (APP)
sensor (main)
Below 0.3 V
Ignition switch turned ON.
—
E23-55
WHT/
BLU
Accelerator pedal
position (APP)
sensor (main)
signal
0.65 – 0.82 V
Ignition switch turned ON
and accelerator pedal at
idle position after warmed
up engine.
—
3.50 – 4.27 V
Ignition switch turned ON
and accelerator pedal at
full depressed position
after warmed up engine.
E23-56
WHT
Output for 5 V
power source of
accelerator pedal
position (APP)
sensor (main)
4.5 – 5.5 V
Ignition switch turned ON.
—
E23-57
—
—
—
—
—
E23-58
—
—
—
—
—
E23-59
—
—
—
—
—
E23-60
BLU
Main power supply
relay output
10 – 14 V
Ignition switch turned OFF.
—
0 – 2 V
Ignition switch turned ON.
Terminal
No.
Wire
color
Circuit
Normal voltage
Condition
Remarks
Engine General Information and Diagnosis: For Petrol Engine Model 1A-232
Reference waveform No.1
Fuel injector signal (1) with engine idling
Reference waveform No.2
No.1 fuel injector signal (2) with engine idling
Reference waveform No.3
No.2 fuel injector signal (2) with engine idling
Reference waveform No.4
EGR valve signal
Measurement
terminal
CH1: “C37-2” to “C37-58”
Oscilloscope
setting
CH1: 20 V/DIV
TIME: 1 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
2. Fuel injection pulse width: 2-4 msec.
3. 10 – 14 V
Measurement
terminal
CH1: “C37-52” to “C37-58”
CH2: “C37-1” to “C37-58”
Oscilloscope
setting
CH1: 5 V/DIV, CH2: 20 V/DIV
TIME: 40 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
3. 720
° crank angle
I5JB0A110074-01
I5JB0A110075-01
Measurement
terminal
CH1: “C37-52” to “C37-58”
CH2: “C37-2” to “C37-58”
Oscilloscope
setting
CH1: 5 V/DIV, CH2: 20 V/DIV
TIME: 40 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
3. 720
° crank angle
Measurement
terminal
CH1: “C37-5” to “C37-58”
CH2: “C37-6” to “C37-58”
CH3: “C37-3” to “C37-58”
CH4: “C37-4” to “C37-58”
Oscilloscope
setting
CH1: 20 V/DIV, CH2: 20 V/DIV
CH3: 20 V/DIV, CH4: 20 V/DIV
TIME: 40 ms/DIV
Measurement
condition
Engine at cranking
1. EGR valve stepper motor coil 1 signal
2. EGR valve stepper motor coil 2 signal
3. EGR valve stepper motor coil 3 signal
4. EGR valve stepper motor coil 4 signal
5. ON signal
6. OFF signal
I5JB0A110076-01
I4RS0B110053-01
1A-233 Engine General Information and Diagnosis: For Petrol Engine Model
Reference waveform No.5
Generator field coil monitor signal (1) at engine idling
Reference waveform No.6
Generator field coil monitor signal (1) at engine idling
Reference waveform No.7
Heated oxygen sensor-2 signal (1) with engine idling
Reference waveform No.8
Heated oxygen sensor-2 signal (1) with engine racing
Measurement
terminal
CH1: “C37-8” to “C37-58”
CH2: “C37-28” to “C37-58”
Oscilloscope
setting
CH1: 5 V/DIV, CH2: 5 V/DIV
TIME: 20 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
• All accessory switch turned off
2. Generator output control signal
Measurement
terminal
CH1: “C37-8” to “C37-58”
CH2: “C37-28” to “C37-58”
Oscilloscope
setting
CH1: 5 V/DIV, CH2: 5 V/DIV
TIME: 20 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
• For a few sec. from headlight
switch turned ON
2. Generator output control signal
I5JB0A110077-01
I5JB0A110078-01
Measurement
terminal
CH1: “C37-11” to “C37-57”
CH2: “C37-47” to “C37-58”
Oscilloscope
setting
CH1: 200 mV/DIV, CH2: 10 V/DIV
TIME: 200 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
2. Heated oxygen sensor-2 heater signal
3. One duty cycle
Measurement
terminal
CH1: “C37-11” to “C37-57”
CH2: “C37-47” to “C37-58”
Oscilloscope
setting
CH1: 500 mV/DIV, CH2: 10 V/DIV
TIME: 200 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine racing
2. Heated oxygen sensor-2 heater signal
3. Engine racing
I5JB0A110079-01
I5JB0A110080-03
Engine General Information and Diagnosis: For Petrol Engine Model 1A-234
Reference waveform No.9
EVAP canister purge valve signal
Reference waveform No.10
No.3 fuel injector signal (2) with engine idling
Reference waveform No.11
No.4 fuel injector signal (2) with engine idling
Measurement
terminal
CH1: “C37-13” to “C37-58”
Oscilloscope
setting
CH1: 10 V/DIV
TIME: 40 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Set EVAP canister purge valve at
52% by using “Misc Test” of scan
tool
1. ON signal
2. OFF signal
3. One duty cycle
4. 10 – 14 V
Measurement
terminal
CH1: “C37-52” to “C37-58”
CH2: “C37-16” to “C37-58”
Oscilloscope
setting
CH1: 5 V/DIV, CH2: 20 V/DIV
TIME: 40 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
3. 720
° crank angle
I4RS0B110067-01
I5JB0A110081-01
Measurement
terminal
CH1: “C37-52” to “C37-58”
CH2: “C37-17” to “C37-58”
Oscilloscope
setting
CH1: 5 V/DIV, CH2: 20 V/DIV
TIME: 40 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
3. 720
° crank angle
I5JB0A110082-01
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