odometer CHRYSLER VOYAGER 2000 Diagnostic Manual

Symptom:
P-0139 1/2 O2S SLOW RESPONSE
When Monitored and Set Condition:
P-0139 1/2 O2S SLOW RESPONSE
When Monitored: With the engine running, engine at normal operating temperature,
ambient air temperature greater than þ7ÉC (20ÉF) and vehicle odometer is greater than
6437 Kilometers (4000 miles).
Set Condition: The Oxygen Sensor Signal voltage does not exceed 0.53 volts and does not
fall below 0.35 volts once during the drive cycle.
POSSIBLE CAUSES
ENGINE MECHANICAL PROBLEM
1/2 O2 SENSOR GROUND CKT HIGH RESISTANCE
1/2 O2 SENSOR GROUND CKT POOR CONNECTION
1/2 O2 SENSOR SIGNAL CKT HIGH RESISTANCE
1/2 O2 SENSOR SIGNAL CKT POOR CONNECTION
1/2 O2 SENSOR SLOW RESPONSE
EXHAUST LEAK
1/2 O2S SLOW RESPONSE DOES NOT REOCCUR
TEST ACTION APPLICABILITY
1 With the DRB, read the DTCs.
Is the GLOBAL GOOD TRIP counter displayed and equal to zero?All
Ye s®Go To 5
No®Go To 2
2 Turn Ignition On (Engine Off).
During the following voltage drop measurement, wiggle wires between O2S Connec-
tor and PCM Connector.
Using a voltmeter, backprobe O2S (Sensor Ground) Circuit between O2S Connector
(Sensor Ground) and PCM Connector (Sensor Ground).
While wiggling wires, is the voltage drop reading below 0.10 VDC?All
Ye s®Go To 3
No®Repair poor connection (high resistance) on O2 Sensor Ground
Circuit.
Perform VERIFICATION TEST VER-5A3.
68
DRIVEABILITY
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TEST ACTION APPLICABILITY
5 Ignition on, engine not running.
With the DRB, perform the SRI Memory Test.
Does the DRB display9Write Failure?9All
Ye s®Replace the Powertrain Control Module.
Perform Verification Test VER-2A.
No®Go To 6
6 Ignition on, engine not running.
Compare SRI mileage stored value to the Instrument Panel Odometer mileage.
Is the mileage the same?All
Ye s®Retest the SRI Memory.
Perform Powertrain Verification Test VER-2A.
No®Go To 7
7 Ignition off.
If there are no potential causes remaining, the SRI Memory is assumed to be in need
of updating.
View repair options.All
Repair
Update the mileage and retest the SRI Memory.
Perform Powertrain Verification Test VER-2A.
223
DRIVEABILITY
P-1696 PCM FAILURE EEPROM WRITE DENIED ÐContinued
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