Signal Waveform & Data

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

Courtesy of KIA MOTORS AMERICA, INC.

Fig 2: Scantool Display - Signal Waveform & Data (Approx 2000RPM & Fuel Cut)

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. 2.9Vs

A: Approx. 2000RPM

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

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

B: Fuel Cut

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

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

* Testing Procedure: 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.