GM Service Manual Online
For 1990-2009 cars only

Object Number: 385169  Size: SF
Keyless Entry Components
Keyless Entry Schematics

Circuit Description

The Body Control Module (BCM) is connected to the Remote Control Door Lock Receiver by a communication circuit. This circuit is the Serial data link for communication between the two modules. The BCM checks each message received from the Remote Control Door Lock Receiver for validaty (Parity).

Conditions for Setting the DTC

The Body Control Module detects an invalid message (a message with a parity error).

Action Taken When the DTC Sets

The BCM stores DTC B3106 in memory.

Conditions for Clearing the DTC

A history DTC B3106 will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.

Test Description

The number(s) below refer to the step number(s) on the diagnostic table.

Step

Action

Value(s)

Yes

No

1

Did you perform the Keyless Entry Diagnostic System Check?

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Go to Step 2

Go to Remote Keyless Entry System Check

2

Replace the Remote Control Door Lock Receiver. Refer to Remote Control Door Lock Receiver Replacement .

Did you complete the replacement?

--

System OK

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