display CHRYSLER VOYAGER 2000 Diagnostic Manual

TEST ACTION APPLICABILITY
3 Ignition Off
Disconnect the ECT Sensor Electrical Connector.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the ECT Sensor Signal Circuit and an engine ground.
Turn the ignition on, with the engine not running.
With the DRB, read the Engine Coolant Temperature Sensor voltage.
Is the voltage below 1.0 volt?All
Ye s®Repair the open ECT Sensor Ground Circuit.
Perform Powertrain Verification Test VER-5A.
No®Go To 4
4 Ignition Off
Disconnect the ECT Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Disconnect the PCM Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the ECT Sensor Signal Circuit from the PCM to the
ECT.
Is the resistance below 5.0 ohms?All
Ye s®Go To 5
No®Repair the open ECT Sensor Signal Circuit.
Perform Powertrain Verification Test VER-5A.
5 Ignition Off
If there are no potential causes remaining, the PCM is assumed to be defective.
View repair options.All
Repair
Replace the PCM.
Perform Powertrain Verification Test VER-5A.
6 Ignition On, Engine Not Running
Use the schematic as a guide and wiggle the ECT Sensor Connector & Harness.
Monitor the DRB display.
Was there any ECT Sensor voltage change?All
Ye s®Repair the Harness or Connector that caused the voltage change.
Perform Powertrain Verification Test VER-5A.
No®Go To 7
7 Ignition Off
Using the schematic as a guide, inspect the Wiring and Connectors.
Were any problems found?All
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
No®Test Complete.
41
DRIVEABILITY
P-0118 ECT SENSOR VOLTAGE TOO HIGH ÐContinued
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TEST ACTION APPLICABILITY
8 Ignition on, engine not running.
With the DRB, read the Throttle Position Sensor (TP Sensor) voltage.
Wiggle Throttle Position Sensor Connectors and Harness.
Monitor the DRB display.
Was there any change in the Throttle Position Sensor voltage when wiggled?All
Ye s®Repair the Harness or Connector that caused the voltage change.
Perform Powertrain Verification Test VER-5A.
No®Go To 9
9 Ignition Off
Using the schematic as a guide, inspect the Wiring and Connectors.
Were any problems found?All
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
No®Go To 10
10 Ignition On, Engine Not Running
With the DRB, read the Throttle Position Sensor (TP Sensor) voltage.
While monitoring the DRB, slowly open and close the Throttle.
Is the voltage change smooth?All
Ye s®Test Complete.
No®Replace the Throttle Position Sensor.
Perform Powertrain Verification Test VER-5A.
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DRIVEABILITY
P-0122 THROTTLE POSITION SENSOR VOLTAGE LOW ÐContinued
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TEST ACTION APPLICABILITY
7 Ignition Off
Disconnect the Throttle Position Sensor.
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance of the TPS Signal Circuit from the TPS
Connector to the PCM Connector.
Is the resistance below 5.0 ohms?All
Ye s®Replace the Powertrain Control Module.
Perform Powertrain Verification Test VER-5A.
No®Repair the open Throttle Position Sensor Signal Circuit.
Perform Powertrain Verification Test VER-5A.
8 Ignition On, Engine Not Running
Wiggle Throttle Position Sensor Connectors and Harness.
Monitor the DRB display.
Was there any change in Throttle Position Sensor voltage when wiggled?All
Ye s®Repair the Harness or Connector that caused the voltage change.
Perform Powertrain Verification Test VER-5A.
No®Go To 9
9 Ignition Off
Using the schematic as a guide, inspect the Wiring and Connectors.
Were any problems found?All
Ye s®Repair as necessary.
Perform Powertrain Verification Test VER-5A.
No®Go To 10
10 Ignition On, Engine Not Running
While monitoring the DRB, slowly open and close the Throttle.
Is the voltage change smooth?All
Ye s®Test Complete.
No®Replace the Throttle Position Sensor.
Perform Powertrain Verification Test VER-5A.
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DRIVEABILITY
P-0123 THROTTLE POSITION SENSOR VOLTAGE HIGH ÐContinued
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Symptom:
P-0133 1/1 O2S SLOW RESPONSE
When Monitored and Set Condition:
P-0133 1/1 O2S SLOW RESPONSE
When Monitored: With engine temperature greater than 63 degrees C (147 degrees F),
after reaching vehicle speed of 16 kmh (10 mph), and throttle remaining open (off idle), for
2 minutes bring vehicle to a stop and allow engine to idle with transmission in drive (auto)
or in neutral (manual).
Set Condition: The Oxygen Sensor Signal voltage is switching from below 0.27 volt to
above 0.62 volt and back fewer times than required.
POSSIBLE CAUSES
ENGINE MECHANICAL PROBLEM
1/1 O2 SENSOR GROUND CKT HIGH RESISTANCE
1/1 O2 SENSOR GROUND CKT POOR CONNECTION
1/1 O2 SENSOR SIGNAL CKT HIGH RESISTANCE
1/1 O2 SENSOR SIGNAL CKT POOR CONNECTION
1/1 O2 SENSOR SLOW RESPONSE
EXHAUST LEAK
1/1 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.
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DRIVEABILITY
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Symptom:
P-0134 1/1 O2 SENSOR STAYS AT CENTER
When Monitored and Set Condition:
P-0134 1/1 O2 SENSOR STAYS AT CENTER
When Monitored: With the engine running for more than 2 minutes and engine
temperature greater than 76 degrees C (170 degrees F).
Set Condition: The Upstream Oxygen Sensor Signal voltage is between 0.35 volt and 0.55
volt for 1.5 minutes.
POSSIBLE CAUSES
O2 SENSOR 1/1 GROUND CIRCUIT OPEN
O2 SENSOR 1/1 SIGNAL CIRCUIT OPEN
1/1 O2 SENSOR WIRING HARN INTER DEFECT
1/1 O2 SENSOR WIRING HARN OBS DEFECT
O2 SENSOR 1/1 DEFECTIVE
PCM DEFECTIVE
TEST ACTION APPLICABILITY
1 Ignition Off
Start the engine and allow it to reach normal operating temperature.
With the DRB in actuator tests, set RPM to 1500.
In sensors, read the Upstream Oxygen Sensor State.
Is the Upstream O2 Sensor level switching?All
Ye s®Go To 2
No®Go To 4
2 Ignition Off
Start the engine and allow it to reach normal operating temperature.
Using the DRB, set the engine speed to 1500 RPM.
With the DRB, read the Upstream O2 Sensor level.
Wiggle Upstream O2 Sensor Connector and Harness.
While wiggling the Harness, monitor the DRB display.
At any time was the Upstream O2 Sensor state locked at center?All
Ye s®Repair the open Harness or Connector that caused the O2 Sensor
state to stay at center.
Perform Powertrain Verification Test VER-5A.
No®Go To 3
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DRIVEABILITY
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Symptom:
P-0135 O2S HEATER FAILURE
When Monitored and Set Condition:
P-0135 O2S HEATER FAILURE
When Monitored: With the ignition key off, after the engine cools down.
Set Condition: No sensor output signal is received when the PCM powers up the sensor
heater.
POSSIBLE CAUSES
1/1 O2 SENSOR CONNECTOR DAMAGED
1/1 O2 SENSOR GND CIRCUIT OPEN
ASD RELAY OUTPUT CIRCUIT OPEN
1/1 O2 SENSOR FAILURE
1/1 O2 SENSOR HEATER ELEMENT FAILURE
1/1 O2S HEATER FAILURE 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 2
No®Go To 3
2 Turn Ignition On (Engine Off), wait three minutes.
With the DRB , monitor the O2 Sensor voltage for a few minutes until the voltage
stabilizes between .4 and .6 volts.
With the DRB, actuate the O2 Heater Test.
Monitor O2 voltage for up to two minutes.
Is the O2 Sensor voltage still between .4 and .6 volts?All
Ye s®Go To 4
No®Go To 3
3 At this time the 1/1 O2S HEATER 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 1/1 O2S HEATER FAILURE reoccur?All
Ye s®Go To 4
No®1/1 O2S Heater failure no longer exists.
Perform VERIFICATION TEST VER-5A3.
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DRIVEABILITY
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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.
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DRIVEABILITY
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Symptom:
P-0140 1/2 O2 SENSOR STAYS AT CENTER
When Monitored and Set Condition:
P-0140 1/2 O2 SENSOR STAYS AT CENTER
When Monitored: With the engine running for more than 2 minutes and engine
temperature greater than 76 degrees C (170 degrees F).
Set Condition: The Upstream Oxygen Sensor Signal voltage is between 0.35 volt and 0.55
volt for 1.5 minutes.
POSSIBLE CAUSES
O2 SENSOR 1/2 GROUND CIRCUIT OPEN
O2 SENSOR 1/2 SIGNAL CIRCUIT OPEN
1/2 O2 SENSOR WIRING HARN INTER DEFECT
1/2 O2 SENSOR WIRING HARN OBS DEFECT
O2 SENSOR 1/2 DEFECTIVE
PCM DEFECTIVE
TEST ACTION APPLICABILITY
1 Ignition Off
Start the engine and allow it to reach normal operating temperature.
With the DRB in actuator tests, set RPM to 1500.
In sensors, read the Downstream Oxygen Sensor Level.
Is the Downstream O2 Sensor Level switching?All
Ye s®Go To 2
No®Go To 4
2 Ignition Off
Start the engine and allow it to reach normal operating temperature.
Using the DRB, set the engine speed to 1500 RPM.
With the DRB, read the Downstream O2 Sensor state.
Wiggle Downstream O2 Sensor Connector and Harness.
While wiggling the Harness, monitor the DRB display.
At any time was the Downstream O2 Sensor state locked at center?All
Ye s®Repair the open Harness or Connector that caused the O2 Sensor
state to stay at center.
Perform Powertrain Verification Test VER-5A.
No®Go To 3
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DRIVEABILITY
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Symptom:
P-0141 1/2 O2S HEATER FAILURE
When Monitored and Set Condition:
P-0141 1/2 O2S HEATER FAILURE
When Monitored: With the ignition key off, after the engine cools down.
Set Condition: No sensor output signal is received when the PCM powers up the sensor
heater.
POSSIBLE CAUSES
1/2 O2 SENSOR CONNECTOR DAMAGED
1/2 O2 SENSOR GND CIRCUIT OPEN
ASD RELAY OUTPUT CIRCUIT OPEN
1/2 O2 SENSOR FAILURE
1/2 O2 SENSOR HEATER ELEMENT FAILURE
1/2 O2S HEATER FAILURE 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 2
No®Go To 3
2 Turn Ignition On (Engine Off), wait three minutes.
With the DRB, monitor the O2 Sensor voltage for a few minutes until the voltage
stabilizes between .4 and .6 volts.
With the DRB, actuate the O2 Heater test.
Monitor O2 voltage for up to two minutes.
Is the O2 Sensor voltage still between .4 and .6 volts?All
Ye s®Go To 3
No®Go To 4
3 At this time the 1/2 O2S HEATER 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 1/2 O2S HEATER FAILURE reoccur?All
Ye s®Go To 4
No®1/2 O2S Heater failure no longer exists.
Perform VERIFICATION TEST VER-5A3.
73
DRIVEABILITY
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Symptom:
P-0171±1/1 FUEL SYSTEM LEAN
When Monitored and Set Condition:
P-0171±1/1 FUEL SYSTEM LEAN
When Monitored: With the engine running in closed loop mode, the ambient, battery
temperature above Ð5 deg. C (20 deg. F) and altitude below 8000 ft.
Set Condition: If the PCM multiplies short term compensation by long term adaptive and
a certain percentage is exceeded for two trips, a freeze frame is stored, the MIL illuminates
and a trouble code is stored.
POSSIBLE CAUSES
FUEL PUMP MODULE DEFECTIVE
TPS VOLTAGE CHANGE NOT SMOOTH
TPS VOLTAGE <0.92V
FUEL INLET STRAINER PLUGGED
ECT SENSOR DEFECTIVE (OUT OF CALIBRATION)
MAP SENSOR DEFECTIVE (OUT OF CALIBRATION)
ENGINE MECHANICAL PROBLEM
FUEL FILTER/PRESSURE REGULATOR DEFECTIVE (HIGH)
FUEL FILTER/PRESSURE REGULATOR DEFECTIVE (LOW)
FUEL PUMP CAPACITY (VOLUME) OUT OF SPECS
TEST ACTION APPLICABILITY
1 Turn ignition on.
With the DRB, read the DTC's.
Is the Global Good Trip Counter displayed and equal to zero for P0171?All
Ye s®Go To 2
No®Go To 13
2 Ignition On, Engine Not Running
With the DRB, read the TPS voltage.
While monitoring the DRB, slowly open and close the Throttle.
Is the voltage change smooth?All
Ye s®Go To 3
No®Replace the Throttle Position Sensor.
Perform Powertrain Verification Test VER-5A.
75
DRIVEABILITY
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