Suzuki Ignis Service Manual page 3252

ENGINE GENERAL INFORMATION AND DIAGNOSIS 6-51
18. Reference waveform No.18
Mass air flow sensor signal at engine racing
Measurement CH1: C63-14 to C63-28
terminal CH2: C63-34 to C63-28
Oscilloscope CH1: 1 V/DIV, CH2: 1 V/DIV
setting TIME: 400 ms/DIV
Measurement • After warmed up to normal operating
condition
• Engine racing
1. Mass air flow sensor signal
2. Throttle position sensor signal
19. Reference waveform No.19
Manifold absolute pressure sensor signal at ignition switch turned
ON
Measurement CH1: C63-15 to C63-28
terminal CH2: C63-34 to C63-28
Oscilloscope CH1: 2 V/DIV, CH2: 2 V/DIV
setting TIME: 200 ms/DIV
Measurement • After warmed up to normal operating
condition
• Ignition switch turned ON
1. Manifold absolute pressure sensor signal
2. Throttle position sensor signal
20. Reference waveform No.20
Manifold absolute pressure sensor signal at engine racing
Measurement CH1: C63-15 to C63-28
terminal CH2: C63-34 to C63-28
Oscilloscope CH1: 2 V/DIV, CH2: 2 V/DIV
setting TIME: 200 ms/DIV
Measurement • After warmed up to normal operating
condition
• Engine racing
Manifold absolute pressure sensor signal
1.
2. Throttle position sensor signal
temperature
temperature
temperature