Visual/Physical Check

NOTE: Use the connector test adapter kit J 35616-A for any test that requires probing the following items:
^ The PCM harness connectors
^ The electrical center fuse/relay cavities
^ The component terminals
^ The component harness connector

Using this kit will prevent damage caused by the improper probing of connector terminals.

Several of the symptom procedures call for a careful visual and physical inspection. This can lead to correcting a condition without further tests and can save valuable time. This inspection should include the following areas:
^ The powertrain control module (PCM) grounds-Inspect for clean, tight connections, with the components in the proper location. Refer to Master Electrical Component List, and to Power and Grounding Connector End Views in Diagrams.
^ The vacuum hoses for splits, kinks, and proper connections-Compare the connections to the data contained on the Vehicle Emission Control Information label. Thoroughly inspect for any type of leak or restriction. Refer to Emission Hose Routing Diagram.
^ The air intake ducts-Inspect for the following conditions:
- Collapsed areas
- Damage
- Looseness
- Proper installation
- Evidence of leaking, especially between the mass air flow (MAF) sensor and the throttle body
^ Air leaks at the throttle body mounting area, MAF sensor and intake manifold sealing surfaces
^ The wiring harness for poor connections, pinches, cuts, or other damage
^ Loose, damaged, or missing sensors and components.

Use the following tables when diagnosing a symptom complaint:
^ Hard Start
^ Surges/Chuggles
^ Lack of Power, Sluggishness, or Sponginess
^ Detonation/Spark Knock
^ Hesitation, Sag, Stumble
^ Cuts Out, Misses
^ Poor Fuel Economy
^ Poor Fuel Fill Quality
^ Rough, Unstable, or Incorrect Idle and Stalling
^ Dieseling, Run-On
^ Backfire
^ Engine Cranks but Does Not Run
^ Malfunction Indicator Lamp (MIL) Inoperative
^ Malfunction Indicator Lamp (MIL) Always On