14 - 8
FUEL SYSTEM—2.5L DIESEL ENGINE
DIAGNOSIS AND TESTING (Continued)
Fig. 12 Glow Plug Relay Location
1 – MOUNTING BOLT
2 – GLOW PLUG RELAY
3 – ELECTRICAL CONNECTOR
Fig. 13 Fuel Shutdown Solenoid Location
1 – FUEL INJECTION PUMP ASSEMBLY
2 – FUEL RETURN LINE
3 – FUEL SUPPLY LINE
4 – FUEL INJECTION PUMP 10–WAY CONNECTOR
5 – TIMING SOLENOID
6 – OVERFLOW VALVE
(14) Verify
turbocharger
Refer to Group 11, Exhaust System and Intake Man-
ifold Group for information.
(15) Verify that the harness connector is firmly
connected to the engine coolant temperature sensor.
2000 JEEP CHEROKEE
wastegate
operation.
Fig. 14 Fuel Injector Sensor
1 – NEEDLE MOVEMENT SENSOR
2 – FUEL INJECTOR (NUMBER 1 CYLINDER ONLY)
3 – COPPER WASHER
4 – SENSOR CONNECTOR
Fig. 15 Vehicle Speed Sensor—4 Wheel Drive
1 – 4WD TRANSFER CASE EXTENSION
2 – VEHICLE SPEED SENSOR
3 – SENSOR ELECTRICAL CONNECTOR
The sensor is located on the side of cylinder head
near the rear of fuel injection pump (Fig. 16).
(16) Check for air in the fuel system. Refer to the
Air Bleed Procedure.
(17) Inspect all fuel supply and return lines for
signs of leakage.
XJ
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