Signal Waveform & Data

Fig 1: Scantool Display - Signal Waveform & Data (Engine Idle After Warm-Up)

Courtesy of KIA MOTORS AMERICA, INC.

CH.1 - Nernst Voltage - approx. 3.01V

CH.2 - Virtual Ground - approx. 2.49V

CH.3 - Trim Resistor - approx. 2.35V

CH.4 - Pumping Current - approx. 2.33V

Fig 2: Scantool Display - Signal Waveform & Data (Engine At Idle)

Courtesy of KIA MOTORS AMERICA, INC.

CH.1 - Nernst Voltage & Trim Resistor: approx. 0.24V

CH.2 - Pumping Current & Virtual Ground: approx. -0.25V

* Test Method: Connect Channel A positive probe to Nernst Voltage and Channel A negative probe to Trim Resistor.

Connect Channel B positive probe to Pumping Current and Channel B negative probe to Virtual Ground.

Fig 3: Scantool Display - Signal Waveform & Data (Approx 2000 RPM, 3000 RPM & Fuel Cut)

Courtesy of KIA MOTORS AMERICA, INC.

A and B: approx. 2000 RPM and 3000 RPM

CH.1 - Nernst Voltage & Trim Resistor: - 0.10 ~ 1.12V

CH.2 - Pumping Current & Virtual Ground: -0.35 ~ 0.59V

C: Fuel cut

CH.1 - Nernst Voltage & Trim Resistor: 1.10V

CH.2 - Pumping Current & Virtual Ground: 0.59V

* Test Method: Connect Channel A positive probe to Nernst Voltage and Channel A negative probe to Trim Resistor.

Connect Channel B positive probe to Pumping Current and Channel B negative probe to Virtual Ground.