Suzuki WagonR+ RB310 Service Manual page 620

ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE) 6-2-49
17. Reference waveform No.17
CMP sensor signal at engine idling
Measurement CH1: E22-10 to E23-1
terminal CH2: E22-30 to E23-1
Oscilloscope CH1: 2 V/DIV, CH2: 2 V/DIV
setting TIME: 20 ms/DIV
Measurement • After warmed up to normal operating
condition temperature
• Engine at specified idle speed
1. Cylinder reference signal (CMP reference signal)
2. CKP signal
18. Reference waveform No.18
Mass air flow sensor signal at engine racing
Measurement CH1: E22-14 to E22-28
terminal CH2: E22-34 to E22-28
Oscilloscope CH1: 1 V/DIV, CH2: 1 V/DIV
setting TIME: 200 ms/DIV
Measurement • After warmed up to normal operating
condition temperature
• 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: E22-15 to E22-28
terminal CH2: E22-34 to E22-28
Oscilloscope CH1: 2 V/DIV, CH2: 2 V/DIV
setting TIME: 200 ms/DIV
Measurement • After warmed up to normal operating
condition temperature
• Ignition switch turned ON
1. Manifold absolute pressure sensor signal
2. Throttle position sensor signal