Engine General Information and Diagnosis: 1A-224
Reference waveform No.5
Generator field coil monitor signal (1) at engine idling
Reference waveform No.6
Generator field coil monitor signal (1) at engine idling
Reference waveform No.7
Heated oxygen sensor-2 signal (1) with engine idling
Reference waveform No.8
Heated oxygen sensor-2 signal (1) with engine racing
Measurement
terminal
CH1: “C37-8” to “C37-58”
CH2: “C37-28” to “C37-58”
Oscilloscope
setting
CH1: 5 V/DIV, CH2: 5 V/DIV
TIME: 20 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
• All accessory switch turned off
2. Generator output control signal
Measurement
terminal
CH1: “C37-8” to “C37-58”
CH2: “C37-28” to “C37-58”
Oscilloscope
setting
CH1: 5 V/DIV, CH2: 5 V/DIV
TIME: 20 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
• For a few sec. from headlight
switch turned ON
2. Generator output control signal
I5JB0A110077-01
I5JB0A110078-01
Measurement
terminal
CH1: “C37-11” to “C37-57”
CH2: “C37-47” to “C37-58”
Oscilloscope
setting
CH1: 200 mV/DIV, CH2: 10 V/DIV
TIME: 200 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine at specified idle speed
2. Heated oxygen sensor-2 heater signal
3. One duty cycle
Measurement
terminal
CH1: “C37-11” to “C37-57”
CH2: “C37-47” to “C37-58”
Oscilloscope
setting
CH1: 500 mV/DIV, CH2: 10 V/DIV
TIME: 200 ms/DIV
Measurement
condition
• After warmed up to normal
operating temperature
• Engine racing
2. Heated oxygen sensor-2 heater signal
3. Engine racing
I5JB0A110079-01
I5JB0A110080-03
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