Circuit Inspection
Courtesy of KIA MOTORS AMERICA, INC. INSPECTION PART - O2 SENSOR (UP) AND ECM CONNECTORS INSPECTION
| Inspection Condition |
(+) Probe |
(-) Probe |
Specification |
| Connector |
Terminal |
Connector |
Terminal |
- Ignition "OFF".
- Disconnect the battery (-) cable.
- Disconnect the electrical connector(s) from the component and ECM.
|
O2 sensor (up) connector |
1 (Virtual Ground) |
Chassis ground |
- |
∞ (infinite) Ω |
| O2 sensor (UP) connector |
2 (Nernst Voltage) |
Chassis ground |
- |
∞ (infinite) Ω |
| O2 sensor (UP) connector |
3 (Current Pump) |
Chassis ground |
- |
∞ (infinite) Ω |
| O2 sensor (UP) connector |
4 (Current Adjust) |
Chassis ground |
- |
∞ (infinite) Ω |
| O2 sensor (UP) connector |
1 (Virtual Ground) |
ECM connector |
43 (Virtual Ground) |
Approx. below 1Ω |
| O2 sensor (UP) connector |
2 (Nernst Voltage) |
ECM connector |
58 (Nernst Voltage) |
Approx. below 1Ω |
| O2 sensor (UP) connector |
3 (Current Pump) |
ECM connector |
59 (Current Pump) |
Approx. below 1Ω |
| O2 sensor (UP) connector |
4 (Current Adjust) |
ECM connector |
44 (Current Adjust) |
Approx. below 1Ω |
- Disconnect the electrical connector(s) from the concerned component.
- Ignition "ON".
|
O2 sensor (up) connector |
1 (Virtual Ground) |
Chassis ground |
- |
Approx. 0V |
| O2 sensor (up) connector |
2 (Nernst Voltage) |
Chassis ground |
- |
Approx. 0V |
| O2 sensor (UP) connector |
3 (Current Pump) |
Chassis ground |
- |
Approx. 0V |
| O2 sensor (UP) connector |
4 (Current Adjust) |
Chassis ground |
- |
Approx. 0V |