Visual Inspection

Fig 29 Power Distribution Center:

NOTE: Before diagnosing or servicing the fuel injection system, perform a visual inspection for loose, disconnected, or misrouted wires and hoses. A thorough visual inspection that includes the following checks saves unnecessary test and diagnostic time.

1. Remove the Power Distribution Center (PDC) cover. Check for blown fuses. Ensure all relays are properly installed.

2. Check the battery terminal connections for loose cables and corrosion.

Fig 30 MAP Sensor:

3. Check the MAP sensor electrical connection.

Fig 32 Idle Air Control Motor:

4. Ensure the electrical connector is completely attached to the idle air contact motor.
5. Ensure electrical connector is attached to the throttle position sensor.

Fig 33 Engine Coolant Temperature Sensor:

6. Verify the electrical connector is attached to the engine coolant temperature sensor.
7. Ensure purge hose is connected to throttle body.

Fig 35 Short Runner Valve (SRV):

8. Ensure the vacuum hose is connected to the Short Runner Valve and the vacuum harness.

Fig 36 Proportional Purge Solenoid:

9. Ensure the Proportional Purge solenoid electrical connectors are attached to the solenoid.

Fig 37 Air Cleaner Housing:

Fig 38 Air Cleaner Element:

10. Inspect the air cleaner filter element. Replace as necessary.

Fig 39 PCM Connectors:

11. Verify the 2 40-way connector is fully inserted into the Powertrain Control Module (PCM). Ensure the wires are not stretched or pulled out of the socket.
12. Ensure the accessory drive belt tension is correct.

Fig 40 Generator:

13. Check for loose or corroded connections at the generator.
14. Check fuel supply tube connections for leaks.

Fig 41 Crankshaft Position Sensor:

15. Verify electrical connector is attached to the crankshaft position sensor.

Fig 42 Upstream Oxygen Sensor:

Fig 43 Upstream Heated Oxygen Sensor:

16. Ensure the electrical connectors are attached to the upstream heated oxygen sensors.

Fig 44 Downstream Heated Oxygen Sensors:

17. Ensure the electrical connectors are attached to the downstream heated oxygen sensors.

Fig 45 Starter Motor:

18. Check for loose or corroded electrical connections at the starter motor.