Diagnostic Aids
WARNING: This page is about a different variant/trim than selected.
- Use the J 35616 Connector Test Adapter Kit for any test that requires probing the ECM harness connector or a component harness connector.
- The lower connector of the ECM is connector C1 and the upper connector of the ECM is connector C2. Refer to Engine Controls Component Views .
- The front wide band sensors do not toggle or switch like a switching HO2S. The front HO2S signals 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 |
| Input Pump Current | Less than 0.5 |