Except California Emission Regulation Applicable ATX Model

Inspection Using An Oscilloscope (Reference) (Except for California emission regulation applicable ATX model)




IGT1, IGT2 control signals
- PCM terminals
- IGT1(No.1 and No.4): 1A(+) - 1D(-)
- IGT2(No.2 and No.3): 1B(+) - 1C(-)

- Oscilloscope setting: 4 V/DIV (Y), 0.01 ms/DIV (X), DC range
- Vehicle condition: Idle after warm up (engine speed approx. 700 rpm, no load, P/S off, A/C off)




Generator output voltage signal
- PCM terminals: 1AA(+) - 2AC(-)
- Oscilloscope setting: 2 V/DIV (Y), 2 ms/DIV (X), DC range
- Vehicle condition: Idle after warm up (engine speed approx. 700 rpm, no load, P/S off, A/C off)




HO2S (front) signal
- PCM terminals: 1AB(+) - 2H(-)
- Oscilloscope setting: 0.1 V/DIV (Y), 400 ms/DIV (X), DC range
- Vehicle condition: Idle after warm up (engine speed approx. 700 rpm, no load, P/S off, A/C off)




Generator field coil control signal
- PCM terminals: 1AD(+) - IC(-)
- Oscilloscope setting: 0.5 V/DIV (Y), 1 ms/DIV (X), DC range
- Vehicle condition: Idle after warm up (engine speed approx. 700 rpm, no load, P/S off, A/C off)

CKP sensor signal




(+)
- PCM terminals: 2D(+) - 2H(-)
- Oscilloscope setting: 2 V/DIV (Y), 4 ms/DIV (X), DC range
- Vehicle condition: Idle after warm up (engine speed approx. 700 rpm, no load, P/S off, A/C off)




(-)
- PCM terminals: 2G(+) - 2H(-)
- Oscilloscope setting; 2 V/DIV (Y), 4 ms/DIV (X), DC range
- Vehicle condition: Idle after warm up (engine speed approx. 700 rpm, no load, P/S off, A/C off)




VSS signal
- PCM terminals: 21(+) - 2AC(-)
- Oscilloscope setting: 1 V/DIV (Y), 10 ms/DIV (X), DC range
- Vehicle condition: Drive the vehicle with approx. 10 km/h {6.2 mph}

CMP sensor signal




(+)
- PCM terminals: 2J(+) - 2H(-)
- Oscilloscope setting: 1 V/DIV (Y), 10 ms/DIV (X), DC range
- Vehicle condition: Idle after warm up (engine speed approx. 700 rpm, no load, P/S off, A/C off)




(-)
- PCM terminals: 2M(+) - 2H(-)
- Oscilloscope setting: 1 V/DIV (Y), 10 ms/DIV (X), DC range
- Vehicle condition: Idle after warm up (engine speed approx. 700 rpm, no load, P/S off, A/C off)




HO2S (front) heater control signal
- PCM terminals: 4A(+) - 1C(-)
- Oscilloscope setting: 4 V/DIV (Y), 200 ms/DIV (X), DC range
- Vehicle condition: Idle after warm up (engine speed approx. 700 rpm, no load, P/S off, A/C off)




OCV control signal
- PCM terminals: 4M(+) - 1C(-)
- Oscilloscope setting: 2 V/DIV (Y), 0.8 ms/DIV (X), DC range
- Vehicle condition: Idle after warm up (engine speed approx. 700 rpm, no load, P/S off, A/C off)




Purge control signal
- PCM terminals: 4U(+) - 1C(-)
- Oscilloscope setting: 2 V/DIV (Y), 10 ms/DIV (X), DC range
- Vehicle condition: Idle after warm up (engine speed approx. 700 rpm, no load, P/S off, A/C off)




Fuel injection control
- PCM terminals
- Fuel Injection No.1: 4Z(+) - 1C(-)
- Fuel Injection No.2: 4W(+) - 1C(-)
- Fuel Injection No.3: 4AD(+) - 1C(-)
- Fuel Injection No.4: 4AA(+) - 1C(-)

- Oscilloscope setting: 4 V/DIV (Y), 10 ms/DIV (X), DC range
- Vehicle condition: Idle after warm up (engine speed approx. 700 rpm, no load, P/S off, A/C off)