Oscilloscope Patterns and Waveforms
Inspection Using An Oscilloscope (Reference)Shift solenoid A signal
PCM terminals
- 1B (+) - body ground (-)
Oscilloscope setting
- 5 V/DIV (Y), 5 ms/DIV (X), DC range
Vehicle condition
- 4GR
Shift solenoid B signal
PCM terminals
- 1C (+) - body ground (-)
Oscilloscope setting
- 5 V/DIV (Y), 5 ms/DIV (X), DC range
Vehicle condition
- 1 GR (Except for M range)
Shift solenoid C signal
PCM terminal
- 1D (+) - body ground (-)
Oscilloscope setting
- 5 V/DIV (Y), 5 ms/DIV (X), DC range
Vehicle condition
- 1GR or 2GR
Pressure control solenoid (+) signal
PCM terminals
- 1G (+) - 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
- 1 H (+) - 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
- 1J (+) - 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}.
Input/turbine speed sensor (+) signal
PCM terminals
- 1M (+) - body ground (-)
Oscilloscope setting
- 500 mV/DIV (Y), 1 ms/DIV (X), DC range
Vehicle condition
- Idle after warm-up
Input/turbine speed sensor (-) signal
PCM terminals
- 1Q (+) - body ground (-)
Oscilloscope setting
- 500 mV/DIV (Y), 1 ms/DIV (X), DC range
Vehicle condition
- Idle after warm-up
Cooling fan control signals
PCM terminals
- 1W (+) - 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
- 1 AL (+) - 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
PCM terminals
- 2G (+) - body ground (-)
Oscilloscope setting
- 5 V/DIV (Y), 125 ms/DIV (X), DC range
Vehicle condition
- Idle after warm up (engine speed approx. 650 rpm, no load)
CMP sensor signal
(+)
PCM terminals
- 2U (+) - body ground (-)
Oscilloscope setting
- 1 V/DIV (Y), 25 ms/DIV (X), DC range
Vehicle condition
- Idle after warm up (engine speed approx. 650 rpm, no load)
(-)
PCM terminals
- 2V (+) - body ground (-)
Oscilloscope setting
- 1 V/DIV (Y), 25 ms/DIV (X), DC range
Vehicle condition
- Idle after warm up (engine speed approx. 650 rpm, no load)
CKP sensor signal
(+)
PCM terminals
- 2Y (+) - body ground (-)
Oscilloscope setting
- 2 V/DIV (Y), 10 ms/DIV (X), DC range
Vehicle condition
- Idle after warm up (engine speed approx. 650 rpm, no load)
(-)
PCM terminals
- 2Z (+) - body ground (-)
Oscilloscope setting
- 2 V/DIV (Y), 10 ms/DIV (X), DC rang
Vehicle condition
- Idle after warm up (engine speed approx. 650 rpm, no load)
OCV signal
PCM terminals
- 2AF (+) - body ground (-)
Oscilloscope setting
- 2.5 V/DIV (Y), 1 ms/DIV (X), DC range
Vehicle condition
- Idle after warm up (engine speed approx. 650 rpm, no load)
H02S (front) signal
PCM terminals
- 2AG (+) - body ground (-)
Oscilloscope setting
- 0.2 V/DIV (Y), 500 ms/DIV (X), DC range
Vehicle condition
- Idle after warm up (engine speed approx. 650 rpm, no load)
Generator output voltage signal
PCM terminals
- 2AM (+) - body ground (-)
Oscilloscope setting
- 2 V/DIV (Y), 2.5 ms/DIV (X), DC range
Vehicle condition
- Idle after warm up (engine speed approx. 650 rpm, no load)
Purge control signal
PCM terminals
- 2AN (+) - body ground (-)
Oscilloscope setting
- 2 V/DIV (Y), 0.1 s/DIV (X), DC range
Vehicle condition
- Idle after warm-up
Generator field coil control signal
PCM terminals
- 2AC (+) - body ground (-)
Oscilloscope setting
- 0.5 V/DIV (Y), 1 ms/DIV (X), DC range
Vehicle condition
- Idle after warm up (engine speed approx. 650 rpm, no load)
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 (engine speed approx. 650 rpm, no load)
IGT1, IGT2, IGT3, IGT4 control signals
PCM terminals
- 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)