Operation CHARM: Car repair manuals for everyone.

Oscilloscope Patterns and Waveforms

INSPECTION USING AN OSCILLOSCOPE (REFERENCE)




Pressure control solenoid (+) signal
PCM terminals
- 1G (+) - Negative battery terminal (-)

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 (+) - Negative battery terminal (-)

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