sensor CHRYSLER VOYAGER 2000 Diagnostic Manual

TEST ACTION APPLICABILITY
8 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance between the CMP Sensor Signal Circuit
and the 8-Volt Supply Circuit at the CMP Sensor Connector.
Is the resistance below 5.0 ohms?ENGINE - 2.0L
and 2.4L
Ye s®Repair the CMP Sensor Signal Circuit for a short to the 8-volt
Supply Circuit.
Perform Powertrain Verification Test VER-5A.
No®Go To 9
9 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance of the CMP Sensor Signal Circuit from
the CMP Sensor Connector to a good ground.
Is the resistance below 5.0 ohms?ENGINE - 2.0L
and 2.4L
Ye s®Repair the CMP Sensor Signal Circuit for a short to ground.
Perform Powertrain Verification Test VER-5A.
No®Go To 10
10 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance between the CMP Sensor Signal Circuit
and the Sensor Ground Circuit at the CMP Sensor Connector.
Is the resistance below 5.0 ohms?ENGINE - 2.0L
and 2.4L
Ye s®Repair the CMP Sensor Signal Circuit for a short to the Sensor
ground.
Perform Powertrain Verification Test VER-5A.
No®Go To 11
11 If there are no potential causes remaining, the Powertrain Control Module is
assumed to be defective.
View repair options.ENGINE - 2.0L
and 2.4L
Repair
Replace the PCM.
Perform Powertrain Verification Test VER-5A.
12 Attempt to start the engine if not already running.
Does the engine start?ENGINE - 2.0L
and 2.4L
Ye s®Go To 13
No®Return to symptom list and select symptoms for a no start
condition.
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TEST ACTION APPLICABILITY
13 Ignition Off
Using the schematic as a guide, inspect the Wiring and Connectors.
Were any problems found?ENGINE - 2.0L
and 2.4L
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
No®Test Complete.
14 Ignition On, Engine Not Running.
Using the DRB, read Trouble Codes.
Is the Global Good Trip displayed and equal to 0?ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6 and/or EN-
GINE - 3.3L V6
FFV
Ye s®Go To 15
No®Go To 25
15 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Turn ignition on.
Using a Voltmeter, measure the 8-Volt Supply Circuit.
Is the voltage above 7.0 volts?ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6 and/or EN-
GINE - 3.3L V6
FFV
Ye s®Go To 16
No®Repair the open 8-Volt Supply Circuit.
Perform Powertrain Verification Test VER-5A.
16 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance of the CMP Sensor Ground Circuit from
the CMP Sensor Connector to a good ground.
Is the resistance below 5.0 ohms?ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6 and/or EN-
GINE - 3.3L V6
FFV
Ye s®Go To 17
No®Repair the open CMP Sensor Ground Circuit to the Harness
splice.
Perform Powertrain Verification Test VER-5A.
17 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Is any Terminal damaged, pushed out, or miswired?ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6 and/or EN-
GINE - 3.3L V6
FFV
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
No®Go To 18
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TEST ACTION APPLICABILITY
18 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Connect one end of a jumper wire to the CMP Sensor Signal Circuit.
Ignition On, Engine Not Running.
With the DRB, monitor the CMP state while tapping the other end of the jumper to
Sensor Ground.
Does the current CMP state change?ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6 and/or EN-
GINE - 3.3L V6
FFV
Ye s®Go To 19
No®Go To 20
19 Ignition Off
Remove the Camshaft Position Sensor.
Note: Check connectors - Clean/repair as necessary.
Inspect the Camshaft Sprocket per service manual instructions.
Is the Camshaft Sprocket okay?ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6 and/or EN-
GINE - 3.3L V6
FFV
Ye s®Replace the Camshaft Position Sensor.
Perform Powertrain Verification Test VER-5A.
No®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
20 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance of the CMP Sensor Signal Circuit from
the CMP Sensor Connector to the PCM.
Is the resistance below 5.0 ohms?ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6 and/or EN-
GINE - 3.3L V6
FFV
Ye s®Go To 21
No®Repair the open CMP Sensor Signal Circuit.
Perform Powertrain Verification Test VER-5A.
21 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance between the CMP Sensor Signal Circuit
and the 8-Volt Supply Circuit at the CMP Sensor Connector.
Is the resistance below 5.0 ohms?ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6 and/or EN-
GINE - 3.3L V6
FFV
Ye s®Repair the CMP Sensor Signal Circuit for a short to the 8-volt
Supply Circuit.
Perform Powertrain Verification Test VER-5A.
No®Go To 22
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DRIVEABILITY
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TEST ACTION APPLICABILITY
22 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance of the CMP Sensor Signal Circuit from
the CMP Sensor Connector to a good ground.
Is the resistance below 5.0 ohms?ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6 and/or EN-
GINE - 3.3L V6
FFV
Ye s®Repair the CMP Sensor Signal Circuit for a short to ground.
Perform Powertrain Verification Test VER-5A.
No®Go To 23
23 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance between the CMP Sensor Signal Circuit
and the Sensor Ground Circuit at the CMP Sensor Connector.
Is the resistance below 5.0 ohms?ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6 and/or EN-
GINE - 3.3L V6
FFV
Ye s®Repair the CMP Sensor Signal Circuit for a short to the Sensor
ground.
Perform Powertrain Verification Test VER-5A.
No®Go To 24
24 If there are no potential causes remaining, the Powertrain Control Module is
assumed to be defective.
View repair options.ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6 and/or EN-
GINE - 3.3L V6
FFV
Repair
Replace the PCM.
Perform Powertrain Verification Test VER-5A.
25 Attempt to start the engine if not already running.
Does the engine start?ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6 and/or EN-
GINE - 3.3L V6
FFV
Ye s®Go To 26
No®Return to symptom list and select symptoms for a no start
condition.
26 Ignition Off
Using the schematic as a guide, inspect the Wiring and Connectors.
Were any problems found?ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6 and/or EN-
GINE - 3.3L V6
FFV
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
No®Test Complete.
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TEST ACTION APPLICABILITY
27 Ignition On, Engine Not Running.
Using the DRB, read Trouble Codes.
Is the Global Good Trip displayed and equal to 0?ENGINE - 3.0L V6
Ye s®Go To 28
No®Go To 38
28 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Turn ignition on.
Using a Voltmeter, measure the 8-Volt Supply Circuit.
Is the voltage above 7.0 volts?ENGINE - 3.0L V6
Ye s®Go To 29
No®Repair the open 8-Volt Supply Circuit.
Perform Powertrain Verification Test VER-5A.
29 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance of the CMP Sensor Ground Circuit from
the CMP Sensor Connector to a good ground.
Is the resistance below 5.0 ohms?ENGINE - 3.0L V6
Ye s®Go To 30
No®Repair the open CMP Sensor Ground Circuit to the Harness
splice.
Perform Powertrain Verification Test VER-5A.
30 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Is any Terminal damaged, pushed out, or miswired?ENGINE - 3.0L V6
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
No®Go To 31
31 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Connect one end of a jumper wire to the CMP Sensor Signal Circuit.
Ignition On, Engine Not Running.
With the DRB, monitor the CMP state while tapping the other end of the jumper to
Sensor Ground.
Does the current CMP state change?ENGINE - 3.0L V6
Ye s®Go To 32
No®Go To 33
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TEST ACTION APPLICABILITY
32 Ignition Off
Remove the Distributor Cap and Rotor.
Inspect the Pulse Ring for damage or misalignment.
Is the Pulse Ring okay?ENGINE - 3.0L V6
Ye s®Replace the Camshaft Position Sensor.
No®Repair or replace the Distributor Pulse Ring as necessary.
Perform Powertrain Verification Test VER-5A.
33 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance of the CMP Sensor Signal Circuit from
the CMP Sensor Connector to the PCM Connector.
Is the resistance below 5.0 ohms?ENGINE - 3.0L V6
Ye s®Go To 34
No®Repair the open CMP Sensor Signal Circuit.
Perform Powertrain Verification Test VER-5A.
34 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance between the CMP Sensor Signal Circuit
and the 8-Volt Supply Circuit at the CMP Sensor Connector.
Is the resistance below 5.0 ohms?ENGINE - 3.0L V6
Ye s®Repair the CMP Sensor Signal Circuit for a short to the 8-volt
Supply Circuit.
Perform Powertrain Verification Test VER-5A.
No®Go To 35
35 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance of the CMP Sensor Signal Circuit from
the CMP Sensor Connector to a good ground.
Is the resistance below 5.0 ohms?ENGINE - 3.0L V6
Ye s®Repair the CMP Sensor Signal Circuit for a short to ground.
Perform Powertrain Verification Test VER-5A.
No®Go To 36
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TEST ACTION APPLICABILITY
36 Ignition Off
Disconnect the Camshaft Position Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the Powertrain Control Module Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance between the CMP Sensor Signal Circuit
and the Sensor Ground Circuit at the CMP Sensor Connector.
Is the resistance below 5.0 ohms?ENGINE - 3.0L V6
Ye s®Repair the CMP Sensor Signal Circuit for a short to the Sensor
ground.
Perform Powertrain Verification Test VER-5A.
No®Go To 37
37 If there are no potential causes remaining, the Powertrain Control Module is
assumed to be defective.
View repair options.ENGINE - 3.0L V6
Repair
Replace the PCM.
Perform Powertrain Verification Test VER-5A.
38 Attempt to start the engine if not already running.
Does the engine start?ENGINE - 3.0L V6
Ye s®Go To 39
No®Return to symptom list and select symptoms for a no start
condition.
39 Ignition Off
Using the schematic as a guide, inspect the Wiring and Connectors.
Were any problems found?ENGINE - 3.0L V6
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
No®Test Complete.
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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.
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Symptom:
P-0420 1/1 CATALYTIC CONVERTER EFFICIENCY
When Monitored and Set Condition:
P-0420 1/1 CATALYTIC CONVERTER EFFICIENCY
When Monitored: After engine warm up to 63 degrees C (147 degrees F), 180 seconds of
open throttle operation, at a speed greater than 30 Km/h (20 mph), with the engine at
1200-1700 rpm and MAP vacuum between 15.0 and 21.0 inches of mercury (Hg).
Set Condition: As catalyst efficiency deteriorates, the switch rate of the downstream O2
sensor approaches that of the upstream O2 sensor. If at any point during the test the
switch ratio reaches a predetermined value a counter is incremented by one.
POSSIBLE CAUSES
EXHAUST LEAK
ENGINE MECHANICAL PROBLEM
CATALYTIC CONVERTER DEFECTIVE
UPSTREAM O2 SENSOR OLDER THAN DOWNSTREAM O2 SENSOR
CATALYST EFFICIENCY FAILURE DOES NOT REOCCUR
TEST ACTION APPLICABILITY
1 With the DRB, read the DTCs.
Is the GLOBAL GOOD TRIPS counter displayed and equal to zero?All
Ye s®Go To 3
No®Go To 2
2 At this time the Catalyst Efficiency Failure does not exist or is an intermittent
problem.
With the DRB, read the FREEZE FRAME DATA.
With this screen, attempt to duplicate the condition that has set this fault.
While using FREEZE FRAME DATA pay particular attention to the fault setting
conditions, such as speed, temp, load, and map vacuum.
Does the Catalyst Efficiency Failure Reoccur?All
Ye s®Go To 3
No®The Catalytic Conveter Efficiency Failure no longer exists.
Perform VERIFICATION TEST VER-5A3.
3 Start Engine and let idle.
Check for exhaust leaks between the Engine and the appropriate Downstream O2
Sensor.
Are there any exhaust leaks?All
Ye s®Repair or replace leaking exhaust parts as necessary.
Perform VERIFICATION TEST VER-5A3.
No®Go To 4
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TEST ACTION APPLICABILITY
4NOTE: Check the exhaust for excessive smoke from internal oil or coolant
leaks.
Is there an oil or coolant consumption condition present?All
Ye s®Repair engine mechanical as necessary and replace Catalytic
Converter.
Perform VERIFICATION TEST VER-5A3.
No®Go To 5
5NOTE: A new Downstream O2 Sensor along with an aging Upstream O2
Sensor may cause this trouble code to set.
Review vehicle repair history.
Has the Downstream O2 Sensor been replaced without replacing the Upstream O2
Sensor?All
Ye s®Replace the appropriate Upstream Oxygen Sensor.
Perform VERIFICATION TEST VER-5A3.
No®Replace the Catalytic Converter.
Perform VERIFICATION TEST VER-5A3.
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P-0420 1/1 CATALYTIC CONVERTER EFFICIENCY ÐContinued
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