Oscilloscope Patterns and Waveforms

INSPECTION USING AN OSCILLOSCOPE (REFERENCE)




IGT1, IGT2, IG3, IG4 control signals

PCM terminals (California emission regulation applicable model)
- IGT1 (No.1):2BE(+) - 1BC(-)
- IGT2(No.2):2BF(+) - 1BB(-)
- IGT3(No.3):2BG(+) - 1BB(-)
- IGT4(No.4):2BH(+) - 1BC(-)

PCM terminals (except for California emission regulation applicable model)
- IGT1 (No.1):2BE(+) - 1BG(-)
- IGT2(No.2):2BF(+) - 1BC(-)
- IGT3(No.3):2BG(+) - 1BC(-)
- IGT4(No.4):2BH(+) - 1BG(-)

Oscilloscope setting
- 10 V/DIV (Y), 25 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (engine speed approx. 650 rpm, no load)