146 Section 8 Component Testing and Adjustment TP-6356 4/12
8.19 Communication Module and
Gauge Driver Circuit Board
When a remote serial annunciator (RSA) is connected to
a Decision-Makerr 3+ controller, a communication
module circuit board is required. See Figure 8-42 for
location and connection.
The communication module circuit board location may
also be occupied by an interface circuit board with
gauge drivers required for some models*. Do not
confuse the function of these circuit boards.
* See the Introduction Section and refer to Tech Tools, Engine
Electronic Module (ECM) for the latest applications.
GM32644-E
1. Ribbon cable, 10-position
2. Ribbon cable, 24-position
3. Connector, 6-position
4. Indicator panel board (existing)
5. Communication module circuit board and/or gauge driver circuit board
1
2
3
4
5
Figure 8-42 Communication Module Circuit Board Location and Connection
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