Oscilloscope Patterns and Waveforms

Inspection Using An Oscilloscope (Reference) Shift solenoid A signal




PCM terminals
- 1 A*1, 1B*2 (+) - body ground (-)

Oscilloscope setting
- 5 V/DIV (Y), 5 ms/DIV (X), DC range

Vehicle condition
- 4GR

Shift solenoid B signal




PCM terminals
- 1E*1 1C*2 (+)-body ground (-)

Oscilloscope setting
- 5 V/DIV (Y), 5 ms/DIV (X), DC range

Vehicle condition
- 1GR

Shift solenoid C signal




PCM terminals
- 1F*1, 1D*2 (+)-body ground (-)

Oscilloscope setting
- 5 V/DIV (Y), 5 ms/DIV (X), DC range

Vehicle condition
- 1GRor2GR

Pressure control solenoid (+) signal




PCM terminals
- 1M*1, 1G*2 (+)-body ground (-)

Oscilloscope setting
- 5 V/DIV (Y), 1 ms/DIV (X), DC range

Vehicle condition
- All of the following conditions are met.
- Ignition switch is turned to the ON position, (engine off)
- P or N position
- CTP

Pressure control solenoid (-) signal




PCM terminals
- 1N*1, 1H*2 (+)-body ground (-)

Oscilloscope setting
- 200 mV/DIV (Y), 1 ms/DIV (X), DC range

Vehicle condition
- All of the following conditions are met.
- Ignition switch is turned to the ON position, (engine off)
- P or N position
- CTP

Vehicle speed signal (ATX)




PCM terminals
- 1AW*1,1J*2 (+)-body ground (-)

Oscilloscope setting
- 1 V/DIV (Y), 2.5 ms/DIV (X), DC range

Vehicle condition
- Vehicle speed is 32 km/h {20 mph}.

Vehicle speed signal (MTX)




PCM terminals
- 2M(+)-2N(-)

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

Vehicle condition
- Vehicle speed is 10 km/h {6.2 mph}.

Input/turbine speed sensor (+) signal




PCM terminals
- 1AO*1,1M*2 (+)-body ground (-)

Oscilloscope setting
- 500 mV/DIV (Y), 1 ms/DIV (X), DC range

Vehicle condition
- Idle after warm-up (no load, P/S off, A/C off)

Input/turbine speed sensor (-) signal




PCM terminals
- 1AG*1,1Q*2 (+)-body ground (-)

Oscilloscope setting
- 500 mV/DIV (Y), 1 ms/DIV (X), DC range

Vehicle condition
- Idle after warm-up (no load, P/S off, A/C off)

Cooling fan control signals




PCM terminals
- 1Y*1, 1W*3, 1 R*4(+)-body ground (-)

Oscilloscope setting
- 5 V/DIV (Y), 1 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (engine speed approx. 700 rpm, A/C ON)

APP signal




Accelerator pedal is released

Accelerator pedal is depressed




PCM terminals
- 1AC*1, 1AL*3, 1AO*4(+)-body ground (-)

Oscilloscope setting
- 2.5 V/DIV (Y), 2 ms/DIV (X), DC range

Vehicle condition
- Ignition switch is turned to the ON position, (engine off)

HO2S (front) heater control signal (California emission regulation applicable model)




PCM terminals
- 2BG(+)-body ground (-)

Oscilloscope setting
- 5 V/DIV (Y), 50 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

H02S (front) heater control signal (except for California emission regulation applicable model)




PCM terminals
- 2G*3, 2BG*4(+)-body ground (-)

Oscilloscope setting
- 5 V/DIV (Y), 125 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

CMP sensor signal




PCM terminals
- 2S*1*4, 2V*3(+)-body ground(-)

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

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

CKP sensor signal




PCM terminals
- 2W*1*4, 2U*3(+)-body ground(-)

Oscilloscope setting
- 1 V/DIV (Y), 2.5 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

OCV signal




PCM terminals
- 2E*1*4, 2AF*3(+)-body ground (-)

Oscilloscope setting
- 2.5 V/DIV (Y), 1 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

H02S (front) signal (except for California emission regulation applicable model)




PCM terminals
- 2AG(+)-body ground (-)

Oscilloscope setting
- 0.2 V/DIV (Y), 500 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

Generator output voltage signal




PCM terminals
- 2AJ*1*4, 2AM*3 (+)-body ground (-)

Oscilloscope setting
- 2 V/DIV (Y), 2.5 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

Purge control signal




PCM terminals
- 2C*1*4, 2AN*3 (+)-body ground (-)

Oscilloscope setting
- 2 V/DIV (Y), 0.1 s/DIV (X), DC range

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

Generator field coil control signal




PCM terminals
- 2AI*1*4, 2AQ*3(+)-body ground (-)

Oscilloscope setting
- 0.5 V/DIV (Y), 1 ms/DIV (X), DC range

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

Fuel injection control




PCM terminals
- Fuel injection No.1: 2BB(+) - body ground (-)
- Fuel injection No.2: 2BC(+) - body ground (-)
- Fuel injection No.3: 2BD(+) - body ground (-)
- Fuel injection No.4: 2AZ(+) - body ground (-)

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

Vehicle condition
- Idle after warm up (no load, P/S off, A/C off)

IGT1, IGT2, IG3, IG4 control signals




PCM terminals*1*4
- IGT1 (No.1): 2BA(+) - body ground (-)
- IGT2 (No.2): 2AW(+) - body ground (-)
- IGT3 (No.3): 2AX(+) - body ground (-)
- IGT4 (No.4): 2AT(+) - body ground (-)

PCM terminals*3
- IGT1 (No.1): 2BE(+) - body ground (-)
- IGT2 (No.2): 2BF(+) - body ground (-)
- IGT3 (No.3): 2BG(+) - body ground (-)
- IGT4 (No.4): 2BH(+) - body ground (-)

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)

1. California emission regulation applicable model
2. Except for California emission regulation applicable model
3. Except for California emission regulation applicable LF ATX model
4. except for California emission regulation applicable LF MTX, L3 model