Chrysler Town, Dodge Caravan. Manual - part 1156

TEST

ACTION

APPLICABILITY

Turn the ignition off.
Disconnect the Clutch Pedal Switch harness connector.
Measure the resistance of the Clutch Pedal Switch Sense circuit.
Is the resistance below 10.0 ohms?

All

Yes

→ Go To 5

→ Repair the Clutch Pedal Switch Sense circuit for an open.

Perform ROAD TEST VERIFICATION - VER-2.

Turn the ignition off.
Disconnect the Clutch Pedal Switch harness connector.
Disconnect the ECM harness connectors.
Measure the resistance between ground and the Clutch Pedal Switch Sense circuit.
Is the resistance below 1000 ohms?

All

Yes

→ Repair the Clutch Pedal Switch Sense circuit for a short to

ground.
Perform ROAD TEST VERIFICATION - VER-2.

→ Replace and program the ECM in accordance with the Service

Information.
Perform ROAD TEST VERIFICATION - VER-2.

167

DRIVEABILITY - DIESEL

P0833-CLUTCH PEDAL PLAUSIBILITY —

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 6000

/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 1450 BAR

(21,000 PSI) with the engine running.

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

AIR IN FUEL SYSTEM

CHECKING FOR OTHER DTC’S

CHECKING THE FUEL DELIVERY SYSTEM

FUEL INJECTOR CONTROL CIRCUIT SHORTED TO GROUND

168

DRIVEABILITY - DIESEL

POSSIBLE CAUSES

FUEL INJECTOR(S)

FUEL PRESSURE SOLENOID

FUEL PUMP

FUEL SYSTEM CONTAMINATION

FUEL SYSTEM LEAK

INJECTOR COMMON DRIVER CIRCUIT OPEN

INTERMITTENT CONDITION

TEST

ACTION

APPLICABILITY

WARNING: HIGH-PRESSURE FUEL LINES DELIVER DIESEL FUEL UN-
DER EXTREME PRESSURE FROM THE INJECTION PUMP TO THE FUEL
INJECTORS. THIS MAY BE AS HIGH AS 23,200 PSI (1600 BAR). USE
EXTREME CAUTION WHEN INSPECTING FOR HIGH-PRESSURE FUEL
LEAKS. FUEL UNDER THIS AMOUNT OF PRESSURE CAN PENETRATE
SKIN CAUSING PERSONAL INJURY OR DEATH. INSPECT FOR HIGH-
PRESSURE FUEL LEAKS WITH A SHEET OF CARDBOARD. WEAR
SAFETY GOGGLES AND ADEQUATE PROTECTIVE CLOTHING WHEN
SERVICING FUEL SYSTEM.
Turn the ignition on.
With the DRBIII

t, read the ECM DTCs.

Are there any other DTCs present?

All

Yes

→ Refer to symptom list for problems related to the DTC other than

P1130.
Perform ROAD TEST VERIFICATION - VER-2.

→ Go To 2

NOTE: If the ECM detects and stores a DTC, the ECM also stores the
engine/vehicle operating conditions under which the DTC was set. Some of
these conditions are displayed on the DRB III

t at the same time the DTC is

displayed.
NOTE: Before erasing stored DTCs, record these conditions. Attempting to
duplicate these conditions may assist when checking for an active DTC.
NOTE: Refer to the Service Information and perform the Air Bleed Proce-
dure before continuing diagnosis.
Turn the ignition on.
With the DRBIII

t, erase the ECM DTCs.

NOTE: Driving the vehicle up and down steep hills or rapid cornering with
a low fuel level can cause this DTC to set. Verify with customer if Low Fuel
Light was illuminated when fault occurred.
Test drive the vehicle under various load and speed conditions to attempt to duplicate
the fault.
With the DRBIII

t, read the ECM DTCs.

Does the DRBIII

t display this DTC?

All

Yes

→ Go To 3

→ Go To 15

169

DRIVEABILITY - DIESEL

P1130-FUEL RAIL PRESSURE MALFUNCTION LEAKAGE DETECTED —

Continued

TEST

ACTION

APPLICABILITY

Turn the ignition off.
WARNING: HIGH-PRESSURE FUEL LINES DELIVER DIESEL FUEL UN-
DER EXTREME PRESSURE FROM THE INJECTION PUMP TO THE FUEL
INJECTORS. THIS MAY BE AS HIGH AS 23,200 PSI (1600 BAR). USE
EXTREME CAUTION WHEN INSPECTING FOR HIGH-PRESSURE FUEL
LEAKS.
WARNING: FUEL UNDER THIS AMOUNT OF PRESSURE CAN PENE-
TRATE SKIN CAUSING PERSONAL INJURY OR DEATH. INSPECT FOR
HIGH-PRESSURE FUEL LEAKS WITH A SHEET OF CARDBOARD. WEAR
SAFETY GOGGLES AND ADEQUATE PROTECTIVE CLOTHING WHEN
SERVICING FUEL SYSTEM.
Inspect the entire fuel system for leakage.
Is there any evidence of leakage?

All

Yes

→ Repair as necessary in accordance with the Service Information.

Perform ROAD TEST VERIFICATION - VER-2.

→ Go To 4

NOTE: Mixing any other fuels such as gasoline or kerosine can cause this
DTC to set.
Turn the ignition off.
WARNING: HIGH-PRESSURE FUEL LINES DELIVER DIESEL FUEL UN-
DER EXTREME PRESSURE FROM THE INJECTION PUMP TO THE FUEL
INJECTORS. THIS MAY BE AS HIGH AS 23,200 PSI (1600 BAR). USE
EXTREME CAUTION WHEN INSPECTING FOR HIGH-PRESSURE FUEL
LEAKS.
WARNING: FUEL UNDER THIS AMOUNT OF PRESSURE CAN PENE-
TRATE SKIN CAUSING PERSONAL INJURY OR DEATH. INSPECT FOR
HIGH-PRESSURE FUEL LEAKS WITH A SHEET OF CARDBOARD. WEAR
SAFETY GOGGLES AND ADEQUATE PROTECTIVE CLOTHING WHEN
SERVICING FUEL SYSTEM.
Inspect the fuel system for contamination.
Is the fuel contaminated?

All

Yes

→ Repair as necessary in accordance with the Service Information.

Perform ROAD TEST VERIFICATION - VER-2.

→ Go To 5

Turn the ignition on.
With the DRBIII

t, erase the ECM DTCs.

Attempt to start the engine.
Does the engine start and idle?

All

Yes

→ Go To 6

→ Go To 11

Start the engine.
With the DRBIII

t in Sensors, compare the Fuel Pressure Setpoint with the Actual

Fuel Pressure readings.
NOTE: If there is air in the fuel system, the Actual Fuel Pressure will
oscillate above and below the Fuel Pressure Setpoint.
Does Actual Fuel Pressure oscillate above and below the Fuel Pressure Setpoint?

All

Yes

→ Refer to the Service Information to purge air from the fuel system.

Perform ROAD TEST VERIFICATION - VER-2.

→ Go To 7

170

DRIVEABILITY - DIESEL

P1130-FUEL RAIL PRESSURE MALFUNCTION LEAKAGE DETECTED —

Continued

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