2000 CHRYSLER VOYAGER air condition

Symptom:
* CHECKING FOR OXYGEN SENSOR SWITCHING
POSSIBLE CAUSES
O2 SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
ENGINE VACUUM ABNORMAL
FUEL DELIVERY SYSTEM DEFECTIVE
O2 SENSOR DEFECTIVE
AIR INLET SYSTEM RESTRICTED
TEST ACTION APPLICABILITY
1 Engine Running
Note: the Engine must be running and at normal operating temperature.
Note: The Downstream O2 Sensor should switch slower than the Upstream
O2 Sensor.
With the DRB, read the O2 Sensor voltages for 10 seconds or more.
Are the O2 Sensor voltages switching normally?All
Ye s®Test Complete.
No®Go To 2
2 Engine Running
Note: The Engine must be running and at normal operating temperature.
Note: The Downstream O2 Sensor should switch slower than the Upstream
O2 Sensor.
With the DRB, read the O2 Sensor voltages for 10 seconds or more.
Is the Upstream O2 Sensor locked9LEAN9?All
Ye s®Go To 3
No®Go To 9
3 Ignition On, Engine Not Running
With the DRB, read the O2 Sensor Signal voltages.
Is the voltage below 0.10 volts for the Upstream or Downstream O2 Sensor?All
Ye s®Go To 4
No®Go To 7
4 Engine Running
Allow the Engine to idle.
Inspect the Engine for any abnormal vacuum conditions.
Are there any abnormal vacuum conditions?All
Ye s®Repair abnormal Engine Vacuum condition as required.
Perform Powertrain Verification Test VER-2A.
No®Go To 5
234
DRIVEABILITY
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TEST ACTION APPLICABILITY
5 Ignition Off
Disconnect the Upstream or Downstream O2 Sensor Connector that the voltage is
below 0.10 volts.
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 O2 Sensor Signal Circuit
and a good ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair the O2 Sensor Signal Circuit for a short to ground.
Perform Powertrain Verification Test VER-2A.
No®Go To 6
6 If there are no potential causes remaining, the Upstream or Downstream O2 Sensor
is assumed to be defective.
View repair options.All
Repair
Replace the Upstream or Downstream O2 Sensor that was below
0.10 volts.
Perform Powertrain Verification Test VER-2A.
7 Engine Running
Allow the Engine to idle.
Inspect the Engine for any abnormal vacuum conditions.
Are there any abnormal vacuum conditions?All
Ye s®Repair abnormal Engine Vacuum condition as required.
Perform Powertrain Verification Test VER-2A.
No®Go To 8
8 Engine Running
With the DRB, reset the Adaptive Fuel Memory.
Note: The engine must be running and at normal operating temperature.
Note: The Downstream O2 Sensor should switch slower than the Upstream
O2 Sensor.
With the DRB, read the O2 Sensor voltages for 10 seconds or more.
Are the O2 Sensor voltages switching normally?All
Ye s®Test Complete.
No®Refer to symptom * CHECKING THE ENGINE MECHANICAL
SYSTEMS in the DRIVEABILITY category.
9 Ignition Off
Install a Fuel Pressure Gauge to the Fuel Line. Use special tools if necessary.
Turn ignition on.
With the DRB, actuate the ASD Fuel System Test.
Allow Fuel Pressure to stabilize.
With the DRB, stop Fuel System Test. Monitor the Pressure Gauge for 1 minute.
Is the Fuel Pressure below 10 psi?All
Ye s®If Fuel Pump and Lines are OK, replace leaking Injector(s) as
necessary.
Perform Powertrain Verification Test VER-2A.
No®Go To 10
235
DRIVEABILITY
* CHECKING FOR OXYGEN SENSOR SWITCHING ÐContinued
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Symptom:
*(NO RESPONSE(CONDITION
POSSIBLE CAUSES
IGNITION NOT ON
DIAGNOSTIC READ-OUT BOX ADAPTER CABLE DEFECTIVE
FUEL PUMP DEFECTIVE
FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
PCM GROUNDS OPEN
FUEL PUMP RELAY OUT CKT INTERMITTENT SHORT TO GRND
FUEL PUMP RELAY OUTPUT CIRCUIT SHORT TO GROUND
SCI RECEIVE CIRCUIT OPEN
SCI RECEIVE CIRCUIT SHORT TO GROUND
SCI TRANSMIT CIRCUIT OPEN
SCI TRANSMIT CIRCUIT SHORTED TO GROUND
FUSED B(+) CIRCUIT OPEN BETWEEN FUSE AND BATTERY
DIAGNOSTIC READ-OUT BOX DEFECTIVE
PCM DEFECTIVE (NO RESPONSE)
FUSED B(+) CIRCUIT OPEN BETWEEN FUSE AND PCM
FUSED B(+) CIRCUIT SHORT TO GROUND
TEST ACTION APPLICABILITY
1 Attempt to start vehicle.
Does the vehicle start?All
Ye s®Go To 2
No®Go To 12
2 Was the Ignition on when the ªNo Responseº message was displayed? All
Ye s®Go To 3
No®Turn the ignition on to get a response.
3 Ignition off.
Using an Ohmmeter, measure the DLC ground circuit (terminals 4 and 5) to ground.
Is the resistance below 5.0 ohms for each measurement?All
Ye s®Go To 4
No®Repair the open ground circuit(s).
Perform Powertrain Verification Test VER-1A.
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STARTING
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TEST ACTION APPLICABILITY
4 Ignition off.
Disconnect the Powertrain Control Module.
Note: Check the connectors-Clean/repair as necessary.
Using an ohmmeter, test the SCI Receive Wire from the PCM to DLC for resistance.
Is the resistance below 5.0 ohms?All
Ye s®Go To 5
No®Repair the open SCI Recieve Circuit.
Perform Powertrain Verification Test VER-1A.
5 Ignition Off.
Disconnect the Powertrain Control Module.
Note: Check the connectors-Clean/repair as necessary.
Using an ohmmeter, test the SCI Recieve Wire from the DLC for resistance to ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair the short to ground in the SCI Receive Circuit.
Perform Powertrain Verification Test VER-1A.
No®Go To 6
6 Ignition Off.
Disconnect the Powertrain Control Module.
Note: Check the connectors-Clean/repair as necessary.
Using an ohmmeter, test the SCI Transmit Wire from the PCM to DLC for resistance.
Is the resistance below 5.0 ohms?All
Ye s®Go To 7
No®Repair the open SCI Transmit Circuit.
Perform Powertrain Verification Test VER-1A.
7 Ignition Off.
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Using an ohmmeter, test the SCI Transmit Wire from the DLC for resistance to
ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair the short to ground in the SCI Transmit Circuit.
Perform Powertrain Verification Test VER-1A.
No®Go To 8
8 Ignition Off.
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Using an ohmmeter, measure the resistance between the SCI Transmit and the SCI
Receive circuits at the DLC.
Is the resistance below 5.0 ohms?All
Ye s®Repair the SCI Transmit Circuit and the SCI Receive circuits
shorted together.
Perform Powertrain Verification Test VER-1A.
No®Go To 9
273
STARTING
*(NO RESPONSE(CONDITION ÐContinued
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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.
274
STARTING
*(NO RESPONSE(CONDITION ÐContinued
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TEST ACTION APPLICABILITY
14 Ignition Off.
Disconnect the Powertrain Control Module.
Note: Check connectors - Clean/repair as necessary.
Turn the ignition on.
With a voltmeter, mesure the Fused B(+) Curcuit.
Is the voltage above 10.0 volts?All
Ye s®Go To 15
No®Go To 16
15 If there are no potential causes remaining, replace the Powertrain Control Module.
View repair options.All
Replace the Powertrain Control Module.
Perform the Powertrain Verification Test VER-1A.
16 Remove Fuel Pump Fuse from the Power Distribution Center.
Inspect the Fuse.
Is the fuse OK?All
Ye s®Go To 17
No®Go To 18
17 Ignition On.
Remove the Fuel Pump Fuse from the PCM.
With a voltmeter, measure the B(+) side of the Fuse Socket.
Is the voltage above 10.0 volts?All
Ye s®Repair the opem B(+) circuit between the Fuse and the PCM.
Perform Powertrain Verification Test VER-1A.
No®Repair the opem B(+) circuit between the Fuse and the battery.
Perform Powertrain Verification Test VER-1A.
18 Ignition Off
Disconnect the Fuel Pump Relay.
Disconnect the Fuel Pump Electrical Connector.
Note: Check connectors - Clean/repair as necessary.
With an Ohmmeter, measure the Fuel Pump Relay Output Circuit to ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair the Fuel Pump Relay Output Circuit for a short to ground.
Perform Powertrain Verification Test VER-1A.
No®Go To 19
19 If there are no potential causes remaining, the Fuel Pump is assumed to be defective.
View repair options.All
Repair
Replace the Fuel Pump. Replace Fuel Pump Fuse.
Perform Powertrain Verification Test VER-1A.
275
STARTING
*(NO RESPONSE(CONDITION ÐContinued
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TEST ACTION APPLICABILITY
1Note: Ensure the SKIM has proper communication and that there are no
SKIM DTC's present before continuing.
Ignition Off.
Ensure the Throttle Cables are not holding the Throttle open.
Is the Throttle held open?ENGINE - 3.0L V6
Ye s®Repair condition that holds the Throttle Body open.
Perform Powertrain Verification Test VER-1A.
No®Go To 2
2 Ignition On, Engine Not Running
With the DRB, actuate the Fuel System and check for Fuel Pump operation at the
Fuel Tank.
Is the Fuel Pump operating?ENGINE - 3.0L V6
Ye s®Go To 3
No®Go To 13
3 Ignition On, Engine Not Running
With DRB, read Throttle Position Sensor voltage.
Is the voltage above 1.5 volts?ENGINE - 3.0L V6
Ye s®Disconnect the TP Sensor Conn. Replace Throttle Position Sensor.
Perform Powertrain Verification Test VER-1A.
No®Go To 4
4 Ignition Off.
Warning: The Fuel System must be opened and may be under high pressure.
Relieve Fuel pressure.
Install a Fuel Pressure Gauge to the Fuel Rail.
Note: The Fuel Tank must be at least 1/4 full for the following tests.
Ignition On, Engine Not Running.
With the DRB, actuate the Fuel System.
Read the Fuel Pressure Gauge.
Fuel pressure should be 43 to 53 psi for Gasoline.
Is the Fuel pressure above the specification ?ENGINE - 3.0L V6
Ye s®Go To 5
No®Go To 8
5 Ignition Off.
Warning: The Fuel System must be opened and may be under high pressure.
Release the Fuel pressure.
Inspect Fuel Filter for a restriction.
Is there a restriction?ENGINE - 3.0L V6
Ye s®Replace the Fuel Filter.
Perform Powertrain Verification Test VER-1A.
No®Go To 6
279
STARTING
* CHECKING THE FUEL SYSTEM ÐContinued
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TEST ACTION APPLICABILITY
15 Ignition Off.
Disconnect the Fuel Pump Relay.
Check connectors - Clean/repair as necessary.
Ignition On , Engine Not Running.
With a Voltmeter, measure the Fuel Pump Relay Fused B(+) Circuit.
Is the voltage above 10.0 volts?ENGINE - 3.0L V6
Ye s®Go To 16
No®Repair the open Fuel Pump Relay Fused B(+) Circuit.
Perform Powertrain Verification Test VER-1A.
16 Ignition Off.
Disconnect the Fuel Pump Harness Connector.
Note; Check Connectors - clean/repair as necessary.
Caution: It is critical that the Fuel Pump Connector has a clean and tight
connection.
Ignition On, Engine Not Running.
Actuate the ASD Fuel System test.
With a Voltmeter, measure the Fuel Pump Relay Output Circuit.
Is the voltage above 10.0 volts?ENGINE - 3.0L V6
Ye s®Go To 17
No®Repair the open Fuel Pump Relay Output Circuit.
Perform Powertrain Verification Test VER-1A.
17 Ignition Off.
Disconnect the Fuel Pump Relay.
Check connectors - Clean/repair as necessary.
Install a substitute Relay of the same part number for the Fuel Pump Relay.
Attempt to start the Engine.
Does the engine start?ENGINE - 3.0L V6
Ye s®Replace the Fuel Pump Relay.
Perform Powertrain Verification Test VER-1A.
No®Go To 18
18 Ignition off.
If there are no potential causes remaining, the Fuel Pump is assumed to be defective.
View repair options.ENGINE - 3.0L V6
Repair
Replace the Fuel Pump.
Perform Powertrain Verification Test VER-1A.
19Note: Ensure the SKIM has proper communication and that there are no
SKIM DTC's present before continuing.
Ignition Off.
Ensure the Throttle Cables are not holding the Throttle open.
Is the Throttle held open?ENGINE - 2.0L,
2.4L I-4 DOHC
and/or ENGINE -
3.3L V6 FFV and/or
ENGINE - 3.3L V6
and/or ENGINE -
3.8L V6
Ye s®Repair condition that holds the Throttle Body open.
No®Go To 20
282
STARTING
* CHECKING THE FUEL SYSTEM ÐContinued
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