Diagnostic Aids

WARNING: This page is about a different variant/trim than selected.

The following table illustrates the ECM connector locations:

ECM Connector Location
X2	X1
Front of Vehicle

The front wide band sensor does not toggle or switch like a switching HO2S. The front HO2S signal will be relatively stable for an idling engine.
The following table illustrates the typical voltages for the HO2S circuits:

HO2S Circuit	Voltage
Ignition ON, Engine OFF HO2S Disconnected
Heater Control	4.6-5.0 V
Heater Supply Voltage	B+
High Signal	2.6-3.1 V
Low Signal	2.2-2.7 V
Pump Current	Less than 0.5 V
Input Pump Current	Less than 0.5 V