fuel CHRYSLER VOYAGER 2001 Manual PDF

TEST ACTION APPLICABILITY
5 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Fuel Pressure Sensor harness connector.
Measure the resistance between ground and the Fuel Pressure Sensor 5-Volt Supply
circuit.
Disconnect the Accelerator Pedal Position Sensor harness connector.
Measure the resistance between ground and the Accelerator Pedal Position Sensor
5-Volt Supply circuit.
Is the resistance above 100k ohms for each measurement?All
Ye s®Go To 6
No®Repair the 5-Volt Supply circuit(s) that measured less than 100k
ohms for a short to ground.
Perform ROAD TEST VERIFICATION - VER-2.
6 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Fuel Pressure Sensor harness connector.
Measure the resistance between the Fuel Pressure Sensor 5-Volt Supply circuit and
the Sensor Ground circuit.
Disconnect the Accelerator Pedal Position Sensor harness connector.
Measure the resistance between the Accelerator Pedal Position Sensor 5-Volt Supply
circuit and the Sensor Ground circuit.
Is the resistance above 100k ohms for each measurement?All
Ye s®Go To 7
No®Repair the 5-Volt Supply circuit(s) that measured less than 100k
ohms for a short to the Sensor Ground circuit.
Perform ROAD TEST VERIFICATION - VER-2.
7 If there are no possible causes remaining, view repair. All
Repair
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
8WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?All
Ye s®Repair as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No®Test Complete.
138
DRIVEABILITY - DIESEL
P0641-SENSOR REFERENCE VOLTAGE A CKT VOLTAGE TOO LOW Ð
Continued

Symptom List:
P1130-FUEL RAIL PRESSURE MALFUNCTION LEAKAGE DE-
TECTED
P1130-FUEL RAIL PRESSURE MALFUNCTION PRESSURE TOO
HIGH-SHUT OFF
P1130-FUEL RAIL PRESSURE MALFUNCTION PRESSURE TOO
LOW
P1130-FUEL RAIL PRESSURE MALFUNCTION SOLENOID OPEN
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P1130-FUEL RAIL PRESSURE
MALFUNCTION LEAKAGE DETECTED.
When Monitored and Set Condition:
P1130-FUEL RAIL PRESSURE MALFUNCTION LEAKAGE DETECTED
When Monitored: With the engine running.
Set Condition: The ECM detects the desired flow of fuel at idle is greater than 5000
mm/sec.
P1130-FUEL RAIL PRESSURE MALFUNCTION PRESSURE TOO HIGH-SHUT
OFF
When Monitored: With the ignition on.
Set Condition: The fuel rail pressure sensor indicates fuel pressure above 21,000 PSI
with the engine off.
P1130-FUEL RAIL PRESSURE MALFUNCTION PRESSURE TOO LOW
When Monitored: With the engine running.
Set Condition: The ECM determines that the fuel rail pressure is too low for a given
engine speed.
P1130-FUEL RAIL PRESSURE MALFUNCTION SOLENOID OPEN
When Monitored: With the engine running.
Set Condition: The ECM detects a higher rate of fuel pressure than the target pressure.
POSSIBLE CAUSES
CHECKING FOR OTHER DTC'S
CHECKING THE FUEL PRESSURE
FUEL INJECTOR CONTROL CIRCUIT SHORTED TO GROUND
FUEL PRESSURE SENSOR
FUEL SYSTEM LEAK
155
DRIVEABILITY - DIESEL

POSSIBLE CAUSES
INJECTOR COMMON DRIVER CIRCUIT OPEN
INTERMITTENT CONDITION
TEST ACTION APPLICABILITY
1WARNING: THE FUEL INJECTION PUMP SUPPLIES HIGH PRESSURE
FUEL TO EACH INDIVIDUAL INJECTOR THROUGH HIGH-PRESSURE
FUEL LINES. FUEL UNDER HIGH PRESSURE CAN PENETRATE SKIN
AND CAUSE PERSONAL INJURY. WEAR SAFETY GOGGLES AND ADE-
QUATE PROTECTIVE CLOTHING.
Turn the ignition on.
With the DRBIIIt, read the ECM DTCs.
Are there any other DTC's present?All
Ye s®Refer to symptom list for problems related to the DTC other than
P1130.
No®Go To 2
2 Turn the ignition on.
With the DRBIIIt, erase the ECM DTCs.
Test drive the vehicle under various load and speed conditions to attempt to duplicate
the fault.
With the DRBIIIt, read the ECM DTCs.
Does the DRBIIItdisplay this DTC?All
Ye s®Go To 3
No®Go To 7
3 Turn the ignition off.
Inspect the entire fuel system for leakage.
Is there any evidence of leakage?All
Ye s®Repair as necessary in accordance with the Service Information.
No®Go To 4
4 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect all of the Fuel Injector harness connectors.
Measure the resistance between ground and each of the Fuel Injector Control
circuits.
Is the resistance below 1000 ohms for any of the measurements?All
Ye s®Repair the appropriate Fuel Injector Control circuit for a short to
ground.
No®Go To 5
5 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect all of the Fuel Injector harness connectors.
Measure the resistance of the Common Injector Driver circuit between the ECM
harness connector and each Fuel Injector harness connector.
Is the resistance below 10.0 ohms for each measurement?All
Ye s®Go To 6
No®Repair the Injector Common Driver circuit for an open.
156
DRIVEABILITY - DIESEL
P1130-FUEL RAIL PRESSURE MALFUNCTION LEAKAGE DETECTED Ð
Continued

TEST ACTION APPLICABILITY
6 Refer to the appropriate Service Information and perform the Fuel Pressure Test.
NOTE: The following is a list of problems that can cause the fuel pressure to
become out of specification: restricted fuel filter or fuel lines, failed fuel
pressure solenoid, air in fuel system, failed fuel sending unit, gelled fuel,
faulty injector.
Is the fuel pressure within specification?All
Ye s®Replace the Fuel Pressure Sensor in accordance with the Service
Information.
No®Repair as necessary in accordance with the Service Information.
7WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running and at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?All
Ye s®Repair as necessary.
No®Test Complete.
157
DRIVEABILITY - DIESEL
P1130-FUEL RAIL PRESSURE MALFUNCTION LEAKAGE DETECTED Ð
Continued

Symptom List:
P1131-FUEL PRESSURE SOLENOID OPEN CIRCUIT
P1131-FUEL PRESSURE SOLENOID PLAUSIBILITY IN AFTER-
RUN
P1131-FUEL PRESSURE SOLENOID SHORT CIRCUIT
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P1131-FUEL PRESSURE SOLE-
NOID OPEN CIRCUIT.
When Monitored and Set Condition:
P1131-FUEL PRESSURE SOLENOID OPEN CIRCUIT
When Monitored: With the ignition on.
Set Condition: The ECM detects an open or short to ground on the Fuel Pressure Solenoid
Control circuit.
P1131-FUEL PRESSURE SOLENOID PLAUSIBILITY IN AFTER-RUN
When Monitored: When the ignition is turned off.
Set Condition: The ECM detects engine speed does not fall below 650 RPM within 0.5
second after ignition off.
P1131-FUEL PRESSURE SOLENOID SHORT CIRCUIT
When Monitored: With the ignition on.
Set Condition: The ECM detects a short to voltage on the Fuel Pressure Solenoid Control
circuit.
POSSIBLE CAUSES
INTERMITTENT CONDITION
ECM/PCM RELAY OUTPUT CIRCUIT OPEN
FUEL PRESSURE SOLENOID CONTROL SHORTED TO VOLTAGE
FUEL PRESSURE SOLENOID CONTROL CIRCUIT SHORTED TO GROUND
FUEL PRESSURE SOLENOID CONTROL CIRCUIT OPEN
FUEL PRESSURE SOLENOID
ENGINE CONTROL MODULE
158
DRIVEABILITY - DIESEL

TEST ACTION APPLICABILITY
1WARNING: THE FUEL INJECTION PUMP SUPPLIES HIGH PRESSURE
FUEL TO EACH INDIVIDUAL INJECTOR THROUGH HIGH-PRESSURE
FUEL LINES. FUEL UNDER HIGH PRESSURE CAN PENETRATE SKIN
AND CAUSE PERSONAL INJURY. WEAR SAFETY GOGGLES AND ADE-
QUATE PROTECTIVE CLOTHING.
Turn the ignition on.
With the DRB, erase ECM DTCs.
Start the engine several times, turning the ignition off for at least 30 seconds
between each run cycle.
Monitor the DRB for ECM DTCs.
Did this DTC reset?All
Ye s®Go To 2
No®Go To 8
2 Turn the ignition off.
Disconnect the Fuel Pressure Solenoid harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, check the ECM/PCM Relay Output
circuit.
Does the test light illuminate brightly?All
Ye s®Go To 3
No®Repair the ECM/PCM Relay Output circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
3 Turn the ignition off.
Disconnect the Fuel Pressure Solenoid harness connector.
Disconnect the ECM harness connectors.
Remove the ECM/PCM Relay from the PDC.
Connect a jumper wire between cavity 30 and cavity 87 of the ECM/PCM Relay
connector.
Turn the ignition on.
Measure the voltage of the Fuel Pressure Solenoid Control circuit.
Is the voltage below 1.0 volt?All
Ye s®Go To 4
No®Repair the Fuel Pressure Solenoid Control circuit for a short to
voltage.
Perform ROAD TEST VERIFICATION - VER-2.
4 Turn the ignition off.
Disconnect the Fuel Pressure Solenoid harness connector.
Disconnect the ECM harness connectors.
Measure the resistance between ground and the Fuel Pressure Solenoid Control
circuit.
NOTE: The Fuel Pressure Solenoid Control circuit is duplicated at ECM
cavities C2-80 and C2-81.
Is the resistance above 100k ohms?All
Ye s®Go To 5
No®Repair the Fuel Pressure Solenoid Control circuit for a short to
ground.
Perform ROAD TEST VERIFICATION - VER-2.
159
DRIVEABILITY - DIESEL
P1131-FUEL PRESSURE SOLENOID OPEN CIRCUIT ÐContinued

TEST ACTION APPLICABILITY
5 Turn the ignition off.
Disconnect the Fuel Pressure Solenoid harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the Fuel Pressure Solenoid Control circuit.
Is the resistance below 5.0 ohms?All
Ye s®Go To 6
No®Repair the Fuel Pressure Solenoid Control circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
6 Turn the ignition off.
Disconnect the Fuel Pressure Solenoid harness connector.
Turn the ignition on.
With the DRB, erase ECM DTCs.
Monitor the DRB for ECM DTCs.
NOTE: The DRB should display P1131-FUEL PRESSURE SOLENOID OPEN
CIRCUIT.
Turn the ignition off.
Connect a jumper wire between cavity 1 and cavity 2 of the Fuel Pressure Solenoid
harness connector.
Turn the ignition on.
With the DRB, erase ECM DTCs.
Monitor the DRB for ECM DTCs.
NOTE: The DRB should display P1131-FUEL PRESSURE SOLENOID
SHORT CIRCUIT.
Does the DRB display the appropriate DTC for each condition?All
Ye s®Replace the Fuel Pressure Solenoid/Fuel Pump Assembly in
accordance with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No®Go To 7
7 If there are no possible causes remaining, view repair. All
Repair
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
160
DRIVEABILITY - DIESEL
P1131-FUEL PRESSURE SOLENOID OPEN CIRCUIT ÐContinued

TEST ACTION APPLICABILITY
8WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time.The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?All
Ye s®Repair as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No®Test Complete.
161
DRIVEABILITY - DIESEL
P1131-FUEL PRESSURE SOLENOID OPEN CIRCUIT ÐContinued

Symptom:
P1511-BATTERY SENSE LINE 1 VOLTAGE TOO LOW
When Monitored and Set Condition:
P1511-BATTERY SENSE LINE 1 VOLTAGE TOO LOW
When Monitored: With the ignition on.
Set Condition: The ECM detects Battery Sense Signal voltage below 7.98 volts.
POSSIBLE CAUSES
INTERMITTENT CONDITION
FUSE 17 OPEN
FUEL HEATER RELAY
BATTERY(+) SENSE CIRCUIT SHORTED TO GROUND
BATTERY(+) SENSE CIRCUIT OPEN
ENGINE CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, erase the ECM DTCs.
Test drive the vehicle.
With the DRBIIIt, read the ECM DTCs.
Does the DRB III display this DTC?All
Ye s®Go To 2
No®Go To 7
2 Turn the ignition off.
Disconnect the ECM harness connectors.
Remove the Fuel Heater Relay from the IPM.
Measure the resistance of the Battery(+) Sense circuit.
Is the resistance below 5.0 ohms?All
Ye s®Go To 3
No®Repair the Battery(+) Sense circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
3 Turn the ignition off.
Remove and inspect Fuse 17 from the IPM.
Is the fuse OK?All
Ye s®Go To 4
No®Repair the short that caused the fuse to open and replace the fuse.
Perform ROAD TEST VERIFICATION - VER-2.
164
DRIVEABILITY - DIESEL

TEST ACTION APPLICABILITY
4 Turn the ignition off.
Install a substitute relay in place of the Fuel Heater Relay.
Disconnect the ECM harness connectors.
Turn the ignition on.
Using a 12-volt test light connected to ground, check the Fuel Heater Relay Output
circuit.
Is the test light on?All
Ye s®Replace the initial Fuel Heater Relay.
Perform ROAD TEST VERIFICATION - VER-2.
No®Go To 5
5 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Crankcase Vent Heater harness connector.
Disconnect the Fuel Heater harness connector.
Remove the Fuel Heater Relay from the IPM.
Measure the resistance between ground and the Battery(+) Sense circuit.
Is the resistance above 100k ohms?All
Ye s®Go To 6
No®Repair the Battery(+) Sense circuit for a short to ground.
Perform ROAD TEST VERIFICATION - VER-2.
6 If there are no possible causes remaining, view repair. All
Repair
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
7WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running and at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?All
Ye s®Repair as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No®Test Complete.
165
DRIVEABILITY - DIESEL
P1511-BATTERY SENSE LINE 1 VOLTAGE TOO LOW ÐContinued