Signal Waveform & Data

Fig 1: Screen Display - Engine Idle After Warm Up

Courtesy of KIA MOTORS AMERICA, INC.

CH.1 - Pumping Current - Approx. 2.7V

CH.2 - Trim Resistor - Approx. 2.5V

CH.3 - Nernst Voltage - Approx. 2.7V

CH.4 - Virtual Ground - Approx. 2.9V

Fig 2: Screen Display - Approx. 2000RPM (A) & Fuel Cut (B)

Courtesy of KIA MOTORS AMERICA, INC.

A: Approx. 2000rpm

CH.1 - Pumping Current & Virtual Ground: - 0.5 to 0.4 V

CH.2 - Nernst Voltage & Trim Resistor: -1.0 to -0.0 V

B: Fuel Cut

CH.1 - Pumping Current & Virtual Ground: Approx. 0.89V

CH.2 - Nernst Voltage & Trim Resistor: Approx. 0.64V

Test Method:

Connect Channel A positive probe to Pumping Current and Channel A negative probe to Trim Resistor.

Connect Channel B positive probe to Nernst Voltage and Channel B negative probe to Virtual Ground.