Input/turbine speed sensor (-) signal

WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

PCM terminals

1Q (+)-Negative battery terminal (-)

Oscilloscope setting

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

Vehicle condition

Idle after warm-up

Fig 1: Inspection Graph Of Input/Turbine Speed Sensor (-) Signal Using Oscilloscope
Courtesy of MAZDA MOTORS CORP.