ESA control signal

Fig 1: ESA Control Signal Waveform

PCM terminals (except for California emission regulation applicable model) 

• Ignition coil No.1: 2AQ (+)-Negative battery terminal (-)
• Ignition coil No.2: 2AR (+)-Negative battery terminal (-)
• Ignition coil No.3: 2AU (+)-Negative battery terminal (-)
• Ignition coil No.4: 2AV (+)-Negative battery terminal (-)

  Oscilloscope setting 

• 0.5 V/DIV (Y), 40 ms/DIV (X), DC range

  Vehicle condition 

• idle (after warm up)