Dynasty V6-181 3.0L SOHC (1991)
Body Controller: Component Tests and General Diagnostics
Overview
These Body Diagnostic Procedures cover 1991 Dodge Dynasty, Chrysler New Yorker, New Yorker Salon, New Yorker 5th Avenue, and Imperial
vehicles equipped with the following body Systems: Electronic Vehicle Instrument Cluster (EVIC), Electronic Instrument Cluster (EIC), Mechanical
Instrument Cluster (MIC), vehicle theft alarm, headlamp doors, automatic door locks, intermittent wipers, illuminated entry, and courtesy lamps.
The procedures contained include all the specifications, instructions, and graphics needed to diagnose body system problems.
The diagnostic test procedures have been designed specifically for use with Chrysler's DRBII diagnostic read-out box. When performing the tests, it is
assumed you are using the DRBII (unless the test tells you to do otherwise).
Diagnostic procedures change every year. New diagnostic systems may be added; carry-over systems may be enhanced. READ THE ENTIRE
HELPFUL INFORMATION SECTION BEFORE TRYING TO DIAGNOSE A VEHICLE FAULT. It is recommended that you review to become
familiar with all new and changed diagnostic procedures.
How to Use This Section
Diagnosis of faults is done in three basic steps:
1. Visual inspection
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A careful and thorough visual inspection may quickly identify the cause of a malfunction and eliminate the need for additional diagnostic
procedures.
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Diagnosis of vehicle faults always starts with the visual inspection. If the fault is not resolved by the visual inspection, perform the diagnostic
test(s).
2. Diagnostic tests
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Each specific fault is diagnosed by following a specific testing sequence. It is not necessary to perform all of the tests to diagnose an individual
fault.
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Always begin diagnostic testing with Test 1A. This will direct you to the specific test(s) that must be performed in response to the specific
vehicle fault.
3. Verification test
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A verification of system operation must always be performed to ensure that the system is operating normally after the cause of a fault has been
found and repaired.
All of the information has been specifically included to assist you to find the cause of a vehicle fault.
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The Helpful Information section contains all of the basic information you will need to perform diagnostic tests using the DRBII.
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Begin by reading the Helpful Information section carefully and thoroughly.
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Included in the Helpful Information are several "HELP" subjects. These provide important basic information about the DRBII, components,
connectors, and safety. Reference is made to the Helps within a test procedure when the information is required for correct performance of the test.
Diagnostic Test Procedures
Finding the cause of a vehicle fault is not always easy or quick. However, the diagnostic test procedures have been designed to lead you through
the steps necessary to find the cause of a vehicle fault as easily and quickly as possible.
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The diagnostic test procedures contain step by step instructions for how to determine the cause of a vehicle fault. Possible sources of the fault are
checked and eliminated one by one.
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The diagnostic tests include a schematic of the electrical circuitry for the system, and illustrations of the system components and connectors to
clarify the test steps.
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For instructions on performing test procedures, see "Diagnostic Test Procedures" later in this section.
To successfully perform diagnostic testing, use the information and follow the procedures as presented.
Overview
The vehicle systems that are a part of the "body" system are the:
- Automatic Door Locks
- Courtesy Lamps
