Chrysler Concorde 2004 Service Manual page 762

DRIVEABILITY - NGC
P0132-O2 SENSOR 1/1 VOLTAGE HIGH —
O2 SIGNAL OPEN
PCM RETURN CIRCUIT
PCM SIGNAL CIRCUIT
TEST
1 NOTE: If one of the O2 Sensors Signal or Return circuits are shorted to
voltage, the DRBIII will display all O2 Sensor voltage readings high.
NOTE: It is important to perform the diagnostics on the O2 Sensor that set
the DTC.
NOTE: After the repairs have been made, verify proper O2 Sensor operation.
If all the O2 Sensor voltage readings have not returned to normal, follow the
diagnostic procedure for the remaining O2 Sensors.
Start the engine.
Allow the engine to reach normal operating temperature.
With the DRBIII , read the O2 Sensor voltage.
Is the voltage above 3.7 volts?
Yes → Go To 2
→ Refer to the INTERMITTENT CONDITION symptom in the
No
2 Turn the ignition off.
Disconnect the O2 Sensor harness connector.
Ignition on, engine not running.
With the DRBIII , monitor the O2 Sensor voltage.
Is the O2 Sensor voltage below 4.8 volts?
Yes → Go To 3
→ Go To 5
No
3 Turn the ignition off.
Disconnect the O2 Sensor harness connector.
Ignition on, engine not running.
Measure the voltage on the O2 Return circuit in the O2 Sensor harness connector.
Is the voltage at 2.5 volts?
Yes → Replace the O2 Sensor.
→ Go To 4
No
POSSIBLE CAUSES
ACTION
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
Continued
104
APPLICABILITY
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