Chrysler 300M 2002 Service Manual page 2528

P0133-O2 SENSOR 1/1 SLOW RESPONSE —
EXHAUST LEAK
O2 SENSOR SIGNAL CIRCUIT
O2 SENSOR RETURN CIRCUIT
O2 SENSOR
TEST
1 NOTE: Check for contaminates that may have damaged the O2 Sensor:
contaminated fuel, unapproved silicone, oil and coolant.
Ignition on, engine not running.
With the DRBIII , read DTCs and record the related Freeze Frame data.
Is the Good Trip Counter displayed and equal to zero?
Yes → Go To 2
→ Go To 6
No
2 Start the engine.
Inspect the exhaust system for leak between the engine and the O2 Sensors.
Are there any exhaust leaks?
Yes → Repair or replace the leaking exhaust parts as necessary.
→ Go To 3
No
3 Turn the ignition off
Disconnect the O2 Sensor harness connector.
Ignition on, engine not running.
Measure the voltage on the O2 Sensor Signal circuit in the O2 Sensor harness
connector.
Is the voltage approximately 5.0 volts?
Yes → Go To 4
→ Check the O2 Sensor Signal circuit for damage, short to ground,
No
4 Turn the ignition off.
Disconnect the O2 Sensor harness connector.
Ignition on, engine not running.
Measure the voltage on the O2 Sensor Return circuit in the O2 Sensor harness
connector.
Is the voltage at 2.5 volts?
Yes → Check the O2 Sensor Return circuit for damage, short to ground,
→ Go To 5
No
5 If there are no possible causes remaining, view repair.
Repair
POSSIBLE CAUSES
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
open, or short to voltage. If OK, replace and program the Power-
train Control Module in accordance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
open, or short to voltage. If OK, replace and program the Power-
train Control Module in accordance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Replace the O2 Sensor
Perform POWERTRAIN VERIFICATION TEST VER - 5.
DRIVEABILITY - NGC
Continued
99
APPLICABILITY
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