Diagnostic Aids
WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
The following table illustrates the ECM connector locations:
DTC P0131
| ECM Connector Location | |
|---|---|
| C2 | C1 |
| Front of Vehicle | |
- Use the J 35616 Connector Test Adapter Kit for any test that requires probing the ECM harness connector or a component harness connector.
- 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.
- For an intermittent condition, refer to Intermittent Conditions .
- The following table illustrates the typical voltages for the HO2S circuits:
HO2S Voltages
|
|
|---|---|
| HO2S Circuit | Voltage |
| Heater Control | 4.6-5.0 V |
| Heater Supply Voltage | B+ |
| Reference Voltage | 2.6-3.1 V |
| Low Reference | 2.2-2.7 V |
| Pump Current | Less than 0.5 V |
| Input Pump Current | Less than 0.5 V |