Oscilloscope Patterns and Waveforms

MAJOR SENSOR REFERENCE WAVE-FORMS

The following are the major sensor reference wave-forms. Below is the data for CMP, Mass Air Flow Sensor, Throttle Position Sensor, Rear O2 Sensor, Front O2 Sensor and Injection Pulse when rewing quickly up to 4800 rpm under no load after warming up engine sufficiently. Each value is for reference, the exact values may vary.

MAF SENSOR AND TPS




MAF should increase when depressing the accelerator pedal and should decrease at the moment "THRTL POS SEN" is closed (accelerator pedal is released).

TPS should increase while depressing the accelerator pedal and should decrease while releasing it.