TEST
ACTION
APPLICABILITY
8
Refer to the appropriate Service Information and refer to Diagnosis and Testing Fuel
Delivery System table.
NOTE: The following is a list of problems that can cause fuel pressure to
deviate from specification: restricted fuel filter or fuel lines, failed fuel
pressure solenoid, air in fuel system, failed fuel sending unit, contaminated
fuel, faulty injector.
Were there any problems with the Fuel Delivery System?
All
Yes
→ Repair as necessary in accordance with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Replace the Fuel Pressure Sensor in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
9
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
Yes
→ Repair the appropriate Fuel Injector Control circuit for a short to
ground.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Go To 10
10
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
Yes
→ Go To 11
No
→ Repair the Injector Common Driver circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
11
Refer to the appropriate Service Information and refer to Diagnosis and Testing Fuel
Delivery System table.
NOTE: The following is a list of problems that can cause fuel pressure to
deviate from specification: restricted fuel filter or fuel lines, failed fuel
pressure solenoid, air in fuel system, failed fuel sending unit, contaminated
fuel, faulty injector.
Were there any problems with the Fuel Delivery System?
All
Yes
→ Repair as necessary in accordance with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Go To 12
168
DRIVEABILITY - DIESEL
P1130-FUEL RAIL PRESSURE MALFUNCTION ACTUATOR STICKING —
Continued