Suzuki WagonR+ RB310 Service Manual page 615

6-2-44 ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE)
1. Reference waveform No.1
Heated oxygen sensor–2 heater signal at engine idling
Measurement CH1: E22-33 to E23-1
terminal CH2: E23-3 to E23-1
Oscilloscope CH1: 500 mV/DIV, CH2: 10 V/DIV
setting TIME: 200 ms/DIV
Measurement • After warmed up to normal operating
condition temperature
• Drive vehicle at 60 km/h (37 mil/h) for 10
min.
• Engine at specified idle speed
1. Heated oxygen sensor–2 signal
2. Heated oxygen sensor–2 heater signal
2. Reference waveform No.2
Heated oxygen sensor–1 signal at engine idling
Measurement CH1: E22-11 to E23-1
terminal CH2: E23-4 to E23-1
Oscilloscope CH1: 500 mV/DIV, CH2: 20 V/DIV
setting TIME: 1 s/DIV
Measurement • After warmed up to normal operating
condition temperature
• Engine at specified idle speed
1. Heated oxygen sensor–1 signal
2. Heated oxygen sensor–1 heater signal
3. Reference waveform No.3
Heated oxygen sensor–1 heater signal at engine idling
Measurement CH1: E22-11 to E23-1
terminal CH2: E23-4 to E23-1
Oscilloscope CH1: 500 mV/DIV, CH2: 10 V/DIV
setting TIME: 200 ms/DIV
Measurement • After warmed up to normal operating
condition temperature
• Engine at specified idle speed
1. Heated oxygen sensor–1 signal
2. Heated oxygen sensor–1 heater signal