Generator Field Coil Monitor Signal (1) At Engine Idling; Heated Oxygen Sensor-2 Signal (1) With Engine Idling - Suzuki GRAND VITARA JB416 Service Manual

1A-58 Engine General Information and Diagnosis:
Reference waveform No.5

Generator field coil monitor signal (1) at engine idling

Measurement CH1: "C37-8" to "C37-58"
terminal CH2: "C37-28" to "C37-58"
Oscilloscope CH1: 5 V/DIV, CH2: 5 V/DIV
setting TIME: 20 ms/DIV
• After warmed up to normal
operating temperature
Measurement
condition • Engine at specified idle speed
• All accessory switch turned off
2. Generator output control signal
Reference waveform No.6
Generator field coil monitor signal (1) at engine idling
Measurement CH1: "C37-8" to "C37-58"
terminal CH2: "C37-28" to "C37-58"
Oscilloscope CH1: 5 V/DIV, CH2: 5 V/DIV
setting TIME: 20 ms/DIV
• After warmed up to normal
operating temperature
Measurement
• Engine at specified idle speed
condition
• For a few sec. from headlight
switch turned ON
2. Generator output control signal
Reference waveform No.7

Heated oxygen sensor-2 signal (1) with engine idling

Measurement
terminal
Oscilloscope
setting
Measurement
condition
2. Heated oxygen sensor-2 heater signal
I5JB0A110077-01
3. One duty cycle
Reference waveform No.8
Heated oxygen sensor-2 signal (1) with engine racing
Measurement
terminal
Oscilloscope
setting
Measurement
condition
2. Heated oxygen sensor-2 heater signal
3. Engine racing
I5JB0A110078-01
CH1: "C37-11" to "C37-57"
CH2: "C37-47" to "C37-58"
CH1: 200 mV/DIV, CH2: 10 V/DIV
TIME: 200 ms/DIV
• After warmed up to normal
operating temperature
• Engine at specified idle speed
CH1: "C37-11" to "C37-57"
CH2: "C37-47" to "C37-58"
CH1: 500 mV/DIV, CH2: 10 V/DIV
TIME: 200 ms/DIV
• After warmed up to normal
operating temperature
• Engine racing
I5JB0A110079-01
I5JB0A110080-03