Certain 40-Pin to 70-Pin Adapter Harnesses That Are Used With a Troll Processor May Need to Be Rewired Caterpillar

Certain 40-Pin to 70-Pin Adapter Harnesses That Are Used With a Troll Processor May Need to Be Rewired

Usage:

Certain 40-Pin to 70-Pin Adapter Harnesses That Are Used With a Troll Processor May Need to Be Rewired

CONFIDENTIAL TIBU3964-00

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TECHNICAL INFORMATION BULLETIN	September 17, 2003
Marine Engines	3176C (6BW) 3196 (2XR) 3406E (9WR) 3412E (9KS, 9PW) 3126B (3GS, 9ZF) C-12 (9HP) C-18 (CKH) C-30 (CLX) C-9 (CSN)
	Component Code: 1408

SUBJECT: Certain 40-Pin to 70-Pin Adapter Harnesses That Are Used With a Troll Processor May Need to Be Rewired

PROBLEM:

On certain 40-Pin to 70-Pin Adapter Harnesses, the J1939 Shield and the J1939 Positive wires may be reversed between the 6-pin receptacle (labeled "J1939") and the 3-pin connector (labeled "J1939-ETP"). When a troll processor is connected to the 40-Pin to 70-Pin adapter harness, a loss of J1939 data link will result.

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40-Pin to 70-Pin Adapter Harnesses
Part Number	Engine Models	ECM Type
9E-6180¹	3412E & C30	ADEM 2
9E-6179¹	3406E, 3176C, & 3196	ADEM 2
9E-6178¹	C9, C12, C18, & 3126B	ADEM 3

(1) Part number is not serviceable through Morton Parts. For questions regarding this part number, call the Caterpillar Commercial Engine Analyst at (309) 578-9015.

SOLUTION:

Remove the 18 AWG bare wire (J1939 Shield) from position "6" in the 6-pin receptacle.

Remove the 18 AWG yellow wire (J1939 +) from position "4" in the 6-pin receptacle.

Install the 18 AWG bare wire (J1939 Shield) into position "4" in the 6-pin receptacle.

Install the 18 AWG yellow wire (J1939 +) into position "6" in the 6-pin receptacle.

When the plug is wired correctly, it will conform to the following table.

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6-Pin Receptacle Wiring
Color ? AWG	Function	Position
Red ? 14	Positive Battery	1
Black ? 14	Negative Battery	2
Orange ? 14	Troll	3
Bare ? 18	J1939 Shield	4
Green ? 18	Negative J1939	5
Yellow ? 18	Positive J1939	6

COPYRIGHT 2003 CATERPILLAR
ALL RIGHTS RESERVED

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