Important Preliminary Checks
Checks
| Action
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Before Using This Section
| Before using this section, you
should have performed the Powertrain On-Board Diagnostic System Check. Several
of the following symptom procedures call for a careful visual and physical
check. The visual and physical checks are very important. These checks
can lead to correcting a problem which may save valuable time.
|
Visual
and Physical Checks
|
| • | Inspect the vacuum hoses for splits, kinks and proper connections,
as shown on the Vehicle Emission Control Information label. |
| • | Inspect thoroughly for any type of leak or restriction. |
| • | Inspect for air leaks at all the mounting areas of the intake
manifold sealing surfaces. |
| • | Inspect the ignition wires for the following conditions: |
| • | Inspect the wiring for the following items: |
| • | The following symptom tables contain groups of possible causes
for each symptom and cover several engines. The following symptom tables cover
several engines. The order of these procedures is not important. If the
scan tool readings do not indicate the problems, then proceed in a logical
order, easiest to check or most likely to cause first. In order to determine
if a Specific vehicle is using a particular system or component, refer
to the Control Module Wiring Diagrams for an application. |
|
Symptom
|
- Verify the customer complaint.
- Locate the correct symptom table.
- Inspect the items indicated under that symptom.
Use the following tables when diagnosing a symptom complaint.
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