sensor CHRYSLER VOYAGER 2000 Diagnostic Manual

Symptom:
* CHECKING MAP SENSOR CALIBRATION
POSSIBLE CAUSES
MAP SENSOR DEFECTIVE
TEST ACTION APPLICABILITY
1 Ignition Off
Tee-in a Vacuum Gauge to a Manifold Vacuum source.
Start the engine.
Allow engine to idle.
Note: If engine will not idle, maintain a constant RPM above idle.
Using the DRB, read MAP Sensor Vacuum.
Is the reading within 1 inch of the teed-in Vacuum Gauge?All
Ye s®Go To 2
No®Replace the MAP Sensor.
Perform Verification Test VER-2A.
2 Ignition Off
Disconnect the MAP Sensor Harness Connector.
Ignition On.
Using a voltmeter, measure the 5±volt supply circuit.
Is the voltage above 4.0 volts?All
Ye s®Test Complete.
No®Repair the open 5±volt supply circuit.
Perform Verification Test VER-2A.
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Symptom:
* CHECKING OXYGEN SENSOR HEATER
POSSIBLE CAUSES
1/2 O2 SENSOR VOLTAGE BTWN 0.4 V & 0.6 V
1/1 O2 SENSOR DEFECTIVE
1/2 O2 SENSOR DEFECTIVE
ASD RELAY OUTPUT CIRCUIT OPEN (1/1 O2 SEN)
ASD RELAY OUTPUT CIRCUIT OPEN (1/2 O2 SEN)
HEATER GROUND CIRCUIT OPEN (1/1 O2 SEN)
HEATER GROUND CIRCUIT OPEN (1/2 O2 SEN)
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
With the DRB, actuate the ASD O2 Sensor Heater test.
Wait two minutes for O2 Sensor voltage to stabilize.
Read the Upstream O2 Sensor voltage.
Is the voltage of the Upstream O2 Sensor between 0.4 and 0.6 volts?All
Ye s®Go To 2
No®Go To 5
2Note: The O2 Sensor voltage staying between 0.4 V and 0.6 V indicates a
problem with that Sensor Circuit.
Ignition Off
Disconnect the Upstream O2 Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Turn key on.
With the DRB, actuate the O2 Sensor Heater test.
Using a Voltmeter, measure the ASD Relay Output Circuit at Sensor Connector.
Is the voltage above 10.0 volts?All
Ye s®Go To 3
No®Repair the open ASD Relay Output Circuit from O2 sensor
connector back to splice.
Perform Powertrain Verification Test VER-2A.
3 Ignition Off
Disconnect the Upstream O2 Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance between the Heater Ground Circuit and
a good ground.
Is the resistance below 5.0 ohms?All
Ye s®Go To 4
No®Repair the open Heater Ground Circuit to the Upstream O2
Sensor.
Perform Powertrain Verification Test VER-2A.
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TEST ACTION APPLICABILITY
4 If there are no potential causes remaining, the Upstream O2 Sensor is assumed to be
defective.
View repair options.All
Repair
Replace the Upstream O2 Sensor.
Perform Powertrain Verification Test VER-2A.
5 Ignition Off
Turn key on.
With the DRB, actuate the O2 Sensor Heater test.
Wait two minutes for O2 Sensor voltage to stabilize.
With the DRB, read the Downstream O2 Sensor voltage.
Is the voltage of the Downstream O2 Sensor between 0.4 and 0.6 volts?All
Ye s®Go To 6
No®Test complete.
6Note: The O2 Sensor voltage staying between 0.4 and 0.6 V indicates a
problem with that Sensor Circuit.
Ignition Off
Disconnect the Downstream O2 Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Turn key on.
With the DRB, actuate the O2 Sensor Heater test.
Using a Voltmeter, measure the ASD Relay Output Circuit in Sensor Connector.
Is the voltage above 10.0 volts?All
Ye s®Go To 7
No®Repair the open ASD Relay Output Circuit from O2 Sensor
Connector back to splice.
Perform Powertrain Verification Test VER-2A.
7 Ignition Off
Disconnect the Downstream O2 Sensor Connector.
Note: Check connectors - Clean/repair as necessary.
Using an Ohmmeter, measure the resistance between the Heater Ground Circuit and
a good ground.
Is the resistance below 5.0 ohms?All
Ye s®Go To 8
No®Repair the open Heater Ground Circuit to the Downstream O2
Sensor.
Perform Powertrain Verification Test VER-2A.
8 If there are no potential causes remaining, the Downstream O2 Sensor is assumed to
be defective.
View repair options.All
Repair
Replace the Downstream O2 Sensor.
Perform Powertrain Verification Test VER-2A.
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DRIVEABILITY
* CHECKING OXYGEN SENSOR HEATER ÐContinued
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Symptom:
* CHECKING PARK/NEUTRAL POSITION SWITCH
POSSIBLE CAUSES
DISPLAY SHOWS9P/N9AND9D/R9
TRANSMISSION RANGE SENSOR DEFECTIVE
PARK/NEUTRAL POSITION SWITCH SENSE CIRCUIT OPEN
PARK/NEUTRAL SWITCH SENSE CIRCUIT SHORT TO GROUND
PCM DEF (P/N POSN SW)
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
With the DRB, read Park/Neutral Position Switch state.
While moving the gear selector through all gear positions, watch DRB display.
Does the display show9P/N9and9D/R9?All
Ye s®Park/Neutral Position Switch normal, test pass.
No®Go To 2
2 Ignition Off
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between the Park/Neutral Position Switch Sense Circuit at
the Powertrain Control Module Connector and ground.
While moving gear selector through all gear positions, watch the ohmmeter.
Did the display stay below 5.0 ohms at all times?All
Ye s®Go To 3
No®Go To 5
3 Ignition Off
Disconnect the negative Battery cable.
Disconnect the Powertrain Control Module.
Disconnect the Transmission Control Module.
Measure the resistance between the Park/Neutral Position Switch Sense Circuit at
the PCM harness connector and ground.
Ignition On.
Move the gear selector through all gear positions.
Did the ohmmeter display above 5.0 ohms to below 5.0 ohms?All
Ye s®Replace the Powertrain Control Module.
Perform Powertrain Verification Test VER-2A.
No®Go To 4
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TEST ACTION APPLICABILITY
4 Ignition Off
Disconnect the Powertrain Control Module.
Disconnect the Transmission Range Sensor.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between the Park/Neutral Position Switch Sense Circuit at
the Powertrain Control Module Connector and ground.
While moving gear selector through all gear positions, watch the ohmmeter.
Did the display still remain below 5.0 ohms?All
Ye s®Repair P/N Switch Sense Ckt for a short to ground.
Perform Powertrain Verification Test VER-2A.
No®Test Complete.
5 Ignition Off
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between the Park/Neutral Position Switch Sense Circuit at
the Powertrain Control Module Connector and ground.
While moving gear selector through all gear positions, watch the ohmmeter.
Did the display switch from below 5.0 ohms to above 5.0 ohms?All
Ye s®Replace the Powertrain Control Module.
Perform Powertrain Verification Test VER-2A.
No®Go To 6
6 Ignition Off
Disconnect the Powertrain Control Module.
Disconnect the Transmission Range Sensor (TRS) Connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Park/Neutral Position Switch Sense Circuit from the
PCM Connector to the TRS Connector.
Is the resistance below 5.0 ohms?All
Ye s®Go To 7
No®Repair open P/N Position Switch Sense Ckt.
Perform Powertrain Verification Test VER-2A.
7 If there are no potential causes remaining, the Transmission Range Sensor or the
P/N Switch is assumed to be defective.
View repair options.All
Repair
Replace the Transmission Range Sensor or P/N Switch.
Perform Powertrain Verification Test VER-2A.
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DRIVEABILITY
* CHECKING PARK/NEUTRAL POSITION SWITCH ÐContinued
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Symptom:
* CHECKING THE ENGINE MECHANICAL SYSTEMS
POSSIBLE CAUSES
CHECKING ENGINE MECHANICAL SYSTEMS
TEST ACTION APPLICABILITY
1 At this point in the diagnostic test procedure, you have determined that all of the
engine electrical systems are operating as designed; therefore, they are not the cause
of the driveability problem.
The following additional items should be checked as possible mechanical causes of
the problem:
ENGINE VACUUM - must be at least 13 inches in neutral
ENGINE VALVE TIMING - must be within specifications
ENGINE COMPRESSION - must be within specifications
CAMSHAFT LOBES - check for abnormal wear
CRANK SENSOR PICK-UP - check crankshaft slots for debris/deterioration
ENGINE EXHAUST SYSTEM - must be free of any restrictions
ENGINE PCV SYSTEM - must flow freely
ENGINE DRIVE SPROCKETS - must be properly positioned
TORQUE CONVERTER STALL SPEED - must be within specifications
POWER BRAKE BOOSTER - no internal vacuum leaks
FUEL - must be free of contamination
FUEL INJECTOR - plugged or restricted injector; control wire not connected to
correct injector
Note: If you came to this test from the oxygen sensor, and the rich or lean
condition is not caused by one of the first items above, replace the power-
train control module and perform TEST VER-2A (Road Test Verification).
Always look for any Technical Service Bulletins that may relate to the problem.
Did you come from an Oxygen Sensor rich or lean condition test?All
Ye s®Replace the Powertrain Control Module.
Perform Powertrain Verification Test VER-2A.
No®Test Complete.
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Symptom:
* CHECKING THROTTLE POSITION SENSOR CALIBRATION
POSSIBLE CAUSES
TPS VOLTAGE CHANGE NOT A SMOOTH TRANSITION
TPS VOLTAGE ABOVE 1.5 V WITH THROTTLE CLOSED
THROTTLE CABLE AND BODY BINDING OR RESTRICTED
TPS VOLTAGE BELOW 3.4 V AT WIDE OPEN THROTTLE
TEST ACTION APPLICABILITY
1 Ignition Off
Check the Throttle Cable and Body for binding or restrictions.
Note: Also check Speed Control Cable if equipped.
Is there any binding or restriction?All
Ye s®Repair as necessary.
Perform Verification Test VER-2A.
No®Go To 2
2 Ignition On, Engine Not Running
While slowly opening the Throttle from closed to wide open, monitor the Throttle
Position Sensor voltage at the DRB.
Was the voltage change a smooth transition?All
Ye s®Go To 3
No®Replace Throttle Position Sensor.
Perform Verification Test VER-2A.
3 Ignition On, Engine Not Running
With the DRB, read the Throttle Position Sensor voltage.
Note: Throttle must be fully closed and against the Throttle Stop.
Is the voltage 1.5 V or less with the Throttle closed?All
Ye s®Go To 4
No®Replace Throttle Position Sensor.
Perform Verification Test VER-2A.
4 Was the maximum voltage at least 3.4 volts at wide open Throttle? All
Ye s®Test Complete.
No®Replace Throttle Position Sensor.
Perform Verification Test VER-2A.
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Symptom:
* CHECKING THE A/C PRESSURE SENSOR SIGNAL
POSSIBLE CAUSES
A/C PRESSURE SENSOR 5-VOLT SUPPLY CIRCUIT OPEN
HIGH RESISTANCE IN THE A/C PRESSURE SENSOR SIGNAL CKT
TEST ACTION APPLICABILITY
1 Turn the ignition on.
Using the DRB, read the trouble codes.
Are any A/C Pressure sensor trouble codes set?All
Ye s®Go to the A/C Pressure sensor trouble code.
No®Go To 2
2 Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Turn the ignition on.
Using a voltmeter, measure the A/C Pressure Sensor 5±volt supply circuit.
Is the voltage above 4.8 volts?All
Ye s®Go To 3
No®Repair the open in the A/C Pressure Sensor 5±volt supply circuit.
Perform Powertrain Verification Test VER-2A.
3 Turn the ignition on.
Using the DRB, monitor the A/C Pressure voltage.
Disconnect the A/C Pressure Sensor harness connector.
Is the voltage above 4.8 volts?All
Ye s®Test Complete.
No®Repair the high resistance in the A/C Pressure Sensor Signal
circuit.
Perform Powertrain Verification Test VER-2A.
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TEST ACTION APPLICABILITY
9 Ignition Off.
Connect the DRB to a functional Data Link Connector on another vehicle.
Turn the ignition on.
With the DRB, attempt to read trouble codes.
Did the DRB display ªNo Responseº?All
Ye s®Go To 10
No®Replace the initial vehicle's Powertrain Control Module.
Perform Powertrain Verification Test VER-1A.
10 Ignition Off.
Substitute another DRB Adapter Cable.
Ignition on, Engine not running.
With the DRB, attempt to read trouble codes.
Did the DRB display ªNo Responseº?All
Ye s®Go To 11
No®Replace the DRB Adapter Cable.
Perform Powertrain Verification Test VER-1A.
11 If there are no potential causes remaining, the Diagnostic Readout Box is assumed to
be defective.
View repair options.All
Repair
Have the DRB repaired or replaced.
Perform Powertrain Verification Test VER-1A.
12 Ignition Off.
Disconnect the TP Sensor Connector.
Note: Check connector-Clean/repair as necessary.
Turn the ignition on.
With a voltage, measure the Throttle Position Sensor 5±volt Supply circuit.
Is the voltage above 6.0 volts?All
Ye s®Repair the open grounds at the Powertrain Control Module
Cavities 10 and 50.
Perform the Powertrain Verification Test VER-1A
No®Go To 13
13 Ignition Off.
Disconnect the Powertrain Control Module.
Note: Check connector-Clean/repair as necessary.
Turn the ignition on.
With a voltmeter, measure Fused Ignition Switch Output Circuit.
Is the voltage above 10.0 volts?All
Ye s®Go To 14
No®Repair the open Fused Ignition Switch Output Circuit (check
Ignition Switch Fuse in PDC).
Perform Powertrain Verification Test VER-1A.
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*(NO RESPONSE(CONDITION ÐContinued
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Symptom:
* CHECKING THE CAM AND CRANK SENSORS
POSSIBLE CAUSES
SECONDARY INDICATORS PRESENT
TEST ACTION APPLICABILITY
1 Ignition On, Engine Not Running
Note: Address all trouble codes before continuing.
Note: Ensure PCM Connectors are secure.
With the DRB, read the secondary indicators while cranking the engine.
Were there any secondary indicators present while cranking the engine?All
Ye s®Refer to Symptom list for further diagnostic test.
No®Go To 2
2 Ignition On, Engine Not Running
With the DRB in Input/Output display, monitor the current CMP and CKP states.
Crank the engine for at least 15 seconds.
Does the DRB show current CKP state9present9while cranking?All
Ye s®Go To 3
No®Refer to symptom P-0340 NO CRANK REFERENCE SIGNAL AT
PCM in the DRIVEABILITY category.
3 Ignition On, Engine Not Running
With the DRB in Input/Output display, monitor the current CMP and CKP states.
Crank the engine for at least 15 seconds.
Does the DRB show current CMP state9present9while cranking?All
Ye s®Refer to symptom * CHECKING THE SECONDARY IGNITION
SYSTEM in the STARTING category.
No®Refer to symptom P-0340 NO CAM SIGNAL AT PCM in the
DRIVEABILITY category.
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