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 problem without further tests and can save valuable time. This inspection should include the following areas:
^ Inspect the PCM grounds for being clean, tight, and in their proper location. Refer to Power and Grounding Components, Power and Grounding Component Views (Non-SEO) or Power and Grounding Component Views (SEO), and Power and Grounding Connector End Views in Diagrams.
^ Inspect vacuum hoses for splits, kinks, and proper connections, as shown on Vehicle Emission Control Information label. Inspect thoroughly for any type of leak or restriction. Refer to Emission Hose Routing Diagram.
^ Inspect the air intake ducts for being collapsed, damaged areas, looseness, improper installation, or leaking, especially between the MAF sensor and the throttle body.
^ Inspect for air leaks at throttle body mounting area, Mass Air Flow (MAF) sensor and intake manifold sealing surfaces.
^ Inspect the wiring harness for poor connections, pinches, cuts, or other damage.
^ Inspect for loose, damaged, or missing sensors/components.
^ Inspect the aftermarket/after factory add-ons and accessories for correct installation. These accessories may lead to an emission related OBD II failure while in use, but do not fail when the accessories are not used. Following the manufacturers instructions do not guarantee the accessories will not interrupt the vehicles normal operation as manufactured.

Use the following tables when diagnosing a symptom complaint:
^ Hard Start Hard Start
^ Surges/Chuggles Surges/Chuggles
^ Lack of Power, Sluggishness, or Sponginess Lack of Power, Sluggishness, or Sponginess
^ Detonation/Spark Knock Detonation, Spark Knock
^ Hesitation, Sag, Stumble Hesitation, Sag or Stumble
^ Cuts Out, Misses Cuts Out, Misses
^ Poor Fuel Economy Poor Fuel Economy
^ Poor Fuel Fill Quality Poor Fuel Fill Quality
^ Rough, Unstable, or Incorrect Idle and Stalling Rough, Unstable, or Incorrect Idle and Stalling
^ Dieseling, Run-On Dieseling, Run-On
^ Backfire Backfire
^ Restricted Exhaust System Check Component Tests and General Diagnostics