131 CHRYSLER VOYAGER 2000 Diagnostic Manual

TABLE OF CONTENTS - Continued
P-1492 BATTERY TEMP SENSOR VOLTAGE TOO HIGH......................18
P-1493 BATTERY TEMP SENSOR VOLTAGE TOO LOW.......................18
P-1594 CHARGING SYSTEM VOLTAGE TOO HIGH...........................19
P-1682 CHARGING SYSTEM VOLTAGE TOO LOW...........................21
* CHECKING CHARGING SYSTEM OPERATION WITH NO DTC'S..............24
DRIVEABILITY
P-0106 BAROMETRIC PRESSURE OUT OF RANGE..........................27
P-0107 MAP SENSOR VOLTAGE TOO LOW.................................30
P-0108 MAP SENSOR VOLTAGE TOO HIGH................................32
P-0112 INTAKE AIR TEMP SENSOR VOLTAGE LOW..........................34
P-0113 INTAKE AIR TEMPERATURE SENSOR VOLT HIGH....................36
P-0117 ECT SENSOR VOLTAGE TOO LOW.................................38
P-0118 ECT SENSOR VOLTAGE TOO HIGH.................................40
P-0121 TPS VOLTAGE DOES NOT AGREE WITH MAP........................42
P-0122 THROTTLE POSITION SENSOR VOLTAGE LOW......................45
P-0123 THROTTLE POSITION SENSOR VOLTAGE HIGH......................48
P-0125 CLOSED LOOP TEMP NOT REACHED...............................51
P-0131 1/1 O2 SENSOR VOLTAGE SHORTED TO GROUND...................53
P-0132 1/1 O2 SENSOR SHORTED TO VOLTAGE............................55
P-0133 1/1 O2S SLOW RESPONSE........................................57
P-0134 1/1 O2 SENSOR STAYS AT CENTER................................60
P-0135 O2S HEATER FAILURE............................................62
P-0137 1/2 O2 SENSOR VOLTAGE SHORTED TO GROUND...................64
P-0138 1/2 O2 SENSOR SHORTED TO VOLTAGE............................66
P-0139 1/2 O2S SLOW RESPONSE........................................68
P-0140 1/2 O2 SENSOR STAYS AT CENTER................................71
P-0141 1/2 O2S HEATER FAILURE........................................73
P-0171±1/1 FUEL SYSTEM LEAN..........................................75
P-0201 INJECTOR #1 CONTROL CIRCUIT..................................83
P-0202 INJECTOR #2 CONTROL CIRCUIT..................................86
P-0203 INJECTOR #3 CONTROL CIRCUIT..................................89
P-0204 INJECTOR #4 CONTROL CIRCUIT..................................92
P-0205 INJECTOR #5 CONTROL CIRCUIT..................................95
P-0206 INJECTOR #6 CONTROL CIRCUIT..................................97
P-0300 MULTIPLE CYLINDER MIS-FIRE...................................100
P-0301 CYLINDER #1 MIS-FIRE..........................................100
P-0302 CYLINDER #2 MIS-FIRE..........................................100
P-0303 CYLINDER #3 MIS-FIRE..........................................100
P-0304 CYLINDER #4 MIS-FIRE..........................................100
P-0305 CYLINDER #5 MIS-FIRE..........................................104
P-0306 CYLINDER #6 MIS-FIRE..........................................104
P-0320 NO CRANK REFERENCE SIGNAL AT PCM..........................108
P-0340 NO CAM SIGNAL AT PCM........................................113
P-0351 IGNITION COIL #1 PRIMARY CIRCUIT..............................122
P-0352 IGNITION COIL #2 PRIMARY CIRCUIT..............................125
P-0353 IGNITION COIL #3 PRIMARY CIRCUIT..............................128
P-0401 EGR SYSTEM FAILURE..........................................131
P-0403 EGR SOLENOID CIRCUIT........................................133
P-0420 1/1 CATALYTIC CONVERTER EFFICIENCY..........................136
P-0441 EVAP PURGE FLOW MONITOR FAILURE...........................138
P-0442 EVAP LEAK MONITOR SMALL LEAK DETECTED.....................140
P-0455 EVAP LEAK MONITOR LARGE LEAK DETECTED.....................140
ii
ProCarManuals.com

Symptom:
P-0131 1/1 O2 SENSOR VOLTAGE SHORTED TO GROUND
When Monitored and Set Condition:
P-0131 1/1 O2 SENSOR VOLTAGE SHORTED TO GROUND
When Monitored: With the ignition key off, after the O2 Sensor cools down; and after the
next key on provided that it is a cold start (coolant temperature less than 38 degrees C
(100.4 degrees F)) and ambient temperature within 13 degrees C (7.2 degrees F) of coolant
temperature.
Set Condition: The upstream O2 Sensor Signal voltage is below 0.156 volt prior to O2
Sensor Heater test (cool down period), and O2 voltage less than 0.156 volt after the key on
in the subsequent start.
POSSIBLE CAUSES
1/1 02 SENSOR VOLTAGE LOW
1/1 O2S SIGNAL CIRCUIT SHORT TO GROUND
1/1 O2S SIGNAL CKT SHORT TO GROUND CIRCUIT
1/1 O2 SENSOR DEFECTIVE
PCM DEFECTIVE (1/1 O2S)
TEST ACTION APPLICABILITY
1 Ignition Off
Turn ignition on.
With the DRB, monitor the Upstream O2 Sensor voltage for a few minutes.
Wait three minutes or until the voltage stabilizes (between 0.4 and 0.6 volt).
With the DRB, monitor the Upstream O2 Sensor voltage.
Is the Upstream O2 Sensor voltage below 0.156 volt?All
Ye s®Go To 2
No®The condition required to set this trouble code is not present at
this time.
Perform Powertrain Verification Test VER-5A.
2 Ignition Off
Disconnect the Upstream O2 Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Key on.
With the DRB, monitor the Upstream O2 Sensor voltage.
Is the Upstream O2 Sensor voltage below 0.156 volts?All
Ye s®Go To 3
No®Replace the Upstream O2 Sensor.
Perform Powertrain Verification Test VER-5A.
53
DRIVEABILITY
ProCarManuals.com

TEST ACTION APPLICABILITY
3 Ignition Off
Disconnect the Upstream O2 Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the PCM Connectors.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance between the Upstream O2 Sensor
Signal Circuit and a good ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair the Upstream O2S Signal Circuit for a short to ground.
Perform Powertrain Verification Test VER-5A.
No®Go To 4
4 Ignition Off
Disconnect the Upstream O2 Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the PCM Connectors.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance between the Upstream O2 Sensor
Signal Circuit and the Sensor Ground Circuit.
Is the resistance below 5.0 ohms?All
Ye s®Repair the Upstream O2 Sensor Signal Circuit for a short to the
Sensor Ground Circuit.
Perform Powertrain Verification Test VER-5A.
No®Go To 5
5 If there are no potential causes remaining, the PCM is assumed to be defective.
View repair options.All
Repair
Replace PCM.
Perform Powertrain Verification Test VER-5A.
54
DRIVEABILITY
P-0131 1/1 O2 SENSOR VOLTAGE SHORTED TO GROUND ÐContinued
ProCarManuals.com

Symptom:
P-0401 EGR SYSTEM FAILURE
When Monitored and Set Condition:
P-0401 EGR SYSTEM FAILURE
When Monitored: With engine temp > than 82 degrees C (180 degrees F), ambient temp
> 4 degrees C (40 degrees F), engine in closed loop, O2 Sensor operational, engine under a
steady load with throttle open, and O2 Controller not at or near its limits.
Set Condition: If all conditions met, turn EGR off & on. O2 Snsr Sig is monitored for
change in output sig. If no major change or too much change, flag is set. Repeat test up to
3x in run cycle (2 trips). If fails every time, code sets. If any pass, diags are suspended.
POSSIBLE CAUSES
EXHAUST LEAK
INTAKE MANIFOLD RESTRICTED
EGR BACK PRESSURE TRANSDUCER DEFECTIVE
EGR VALVE ASSEMBLY DEFECTIVE
EGR VALVE ASSEMBLY MOUNTED INCORRECTLY
EGR SYSTEM FAILURE DOES NOT REOCCUR
EGR TRANSDUCER LINE BLOCKED
EGR VALVE ASSEMBLY DIAPHRAM DEFECTIVE
VACUUM SUPPLY TO EGR SOLENOID INADEQUATE
TEST ACTION APPLICABILITY
1 With the DRB, read the DTCs.
Is the GLOBAL GOOD TRIP displayed and equal to zero?All
Ye s®Go To 3
No®Go To 2
2 At this time the EGR System Failure does not exist or is an intermittent problem.
With the DRB, read the FREEZE FRAME.
With this screen, attempt to duplicate the condition that has set this fault.
While using FREEZE FRAME, pay particular attention to the fault setting condi-
tions, such as speed, temp, load, and map vacuum.
Does the EGR System Failure reoccur?All
Ye s®Go To 3
No®EGR System Failure no longer exists.
Perform VERIFICATION TEST VER-5A3.
131
DRIVEABILITY
ProCarManuals.com