Dodge ZB 2005 Service Manual page 1185

DRIVEABILITY - GAS
P0133-O2 SENSOR 1/1 SLOW RESPONSE —
GOOD TRIP EQUAL TO ZERO
EXHAUST LEAK
RESISTANCE IN THE O2 SENSOR SIGNAL CIRCUIT
RESISTANCE IN THE (K900) SENSOR GROUND 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
→ Refer to the INTERMITTENT CONDITION Symptom (Diagnos-
No
2 Start the engine.
Inspect the exhaust for leaks between the engine and the related O2 Sensor.
Are there any exhaust leaks?
Yes → Repair or replace the leaking exhaust parts as necessary.
→ Go To 3
No
3 Turn the ignition off.
While backprobing, measure the voltage of the O2 Sensor Signal circuit between the
O2 Sensor harness connector and PCM harness connector.
NOTE: Ensure the voltmeter leads meet the terminals in the connector and
that there is good terminal to wire connection and are connected for
positive polarity.
Start the engine.
Allow the engine to idle.
Is the voltage below 0.10 of a volt?
Yes → Go To 4
→ Repair the excessive resistance in the O2 Sensor Signal circuit.
No
POSSIBLE CAUSES
ACTION
tic Procedure).
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Continued
64
APPLICABILITY
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