DeVille DHS V8-4.6L VIN Y (2000)
Accessory Delay Module: Initial Inspection and Diagnostic Overview
Diagnostic Starting Point
Begin the system diagnosis with the A Diagnostic System Check - Retained Accessory Power. The Diagnostic System Check will provide the following
information:
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The identification of the control module(s) which command the system.
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The ability of the control module(s) to communicate through the serial data circuit.
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The identification of any stored diagnostic trouble codes (DTCs) and their status.
The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.
Diagnostic System Check - Retained Accessory Power
A Diagnostic System Check - Retained Accessory Power
TEST DESCRIPTION
The number(s) below refer to the step number(s) on the diagnostic table.
2. Lack of communication may be due to a partial malfunction of the class 2 serial data circuit. The specified procedure will determine the particular
condition. Attempt to communicate with the following modules:
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Communiport(R) cellular telephone module (PHN)
^
Dash integration module (DIM)
^
Driver door module (DDM)
^
Driver door switch assembly (DDSA)
^
LH middle door module (LMDM) (W/V4U)
^
LH rear door module (LRDM)
^
Memory seat module (MSM)
^
Navigation data entry processor
^
Navigation data processor
^
Passenger front door module (PFDM)
^
Radio (W/UY4)
^
Radio (W/O UY4)
^
Radio amplifier (DeVille)
^
Radio amplifier (DHS/DTS)
