Throttle Actuator Output Signal With Ignition Switch Turned On - Suzuki GRAND VITARA JB416 Service Manual

1A-64 Engine General Information and Diagnosis:
Reference waveform No.22
Throttle actuator output signal with ignition switch turned
ON
Measurement CH1: "C37-45" to "C37-58"
terminal CH2: "C37-44" to "C37-58"
Oscilloscope CH1: 5 V/DIV, CH2: 5 V/DIV
setting TIME: 2 ms/DIV
• After warmed up to normal
operating temperature
Measurement
condition
• Ignition switch turned ON and
accelerator pedal at idle position
1. Throttle actuator drive signal ("C37-45" terminal)
2. Throttle actuator drive signal ("C37-44" terminal)
3. ON signal
4. OFF signal
5. One duty cycle
Reference waveform No.23
Throttle actuator output signal with ignition switch turned
ON
Measurement
terminal
Oscilloscope
setting
Measurement
condition
I4RS0B110081-02
1. Throttle actuator drive signal ("C37-45" terminal)
2. Throttle actuator drive signal ("C37-44" terminal)
3. ON signal
4. OFF signal
5. One duty cycle
Reference waveform No.24
Manifold absolute pressure sensor signal (1) with
ignition switch turned ON
Measurement
terminal
Oscilloscope
setting
Measurement
condition
2. Throttle position sensor (main) signal
CH1: "C37-45" to "C37-58"
CH2: "C37-44" to "C37-58"
CH1: 5 V/DIV, CH2: 5 V/DIV
TIME: 2 ms/DIV
• After warmed up to normal
operating temperature
• Ignition switch turned ON and
accelerator pedal at full
depressed position
CH1: "C37-55" to "C37-57"
CH2: "C37-54" to "C37-41"
CH1: 2 V/DIV, CH2: 1 V/DIV
TIME: 200 ms/DIV
• After warmed up to normal
operating temperature
• Ignition switch turned ON
I4RS0B110082-02
I4RS0B110070-01