BENDIX TCH-013-022 Bedienungsanleitung PDF herunterladen

Technical Bulletin

Bulletin No: TCH-013-022 Effective Date: 11/2/2012 Cancels: N/A Page: 1 of 2

Subject: Modications for J1922 Engine Communications When Using non-J1922

Bendix

EC-30

™

Electronic Controller Unit (ECU) Replacements

FIGURE 1 - BENDIX

EC-30

™

ANTILOCK ECU

Service replacement Bendix

EC-30

™

service ECUs no

longer support J1922 engine communications. If the

original ECU on the vehicle used the J1922 engine link

to control the retarder and/or engine traction control, this

Bulletin covers the necessary procedures to enable the

continued support of these functions.

Before beginning service work, ask the engine OEM

if the engine Electronic Control Module (ECM) can be

upgraded to support J1939 engine communications. For

vehicles where this option is available, follow the J1939

Upgrade Procedure, otherwise follow the Hard-Wire

Procedure.

Note: The J1939 upgrade procedure provides J1939

retarder control and ATC engine and brake control,

while the hard-wire procedure only provides retarder

control.

In all cases follow the General Safety Guidelines

shown on page two.

J1939 UPGRADE PROCEDURE

1. Add two 18-gauge twisted pair wires to the harness

30-pin connector to pin C3 (J1939 H) and pin D3

(J1939 L). C3 and D3 connect to the J1939 bus.

Consult the vehicle OEM for assistance in connecting

to the J1939 bus.

2. Make the connections to the vehicle per the wiring

diagram - See Figure 2.

HGFEDCBA

For J1939 engine

communications, add

wires C3 and D3

FIGURE 2 - WIRING DIAGRAM FOR J1939 CONNECTION

3. ReconguretheECUbyusingadiagnostictoolor

diagnostic software.

4. The ECU needs to be configured for ABS and

Automatic Traction Control (ATC) and retarder control

viaJ1939.Verifythepropercongurationusingthe

LEDs on the ECU, or by using a diagnostic tool.

Note: The J1939 upgrade procedure provides J1939

retarder control and ATC engine and brake control.

HARD-WIRE PROCEDURE

NOTE: If the engine ECM can not be upgraded

to support J1939 communications, the automatic

traction control function — including both the brake

and engine-limiting functions — will need to be

disabled. The retarder control will now be hard-wired.

A good-quality automotive relay will be required to

complete this procedure and connect the ECU to the

retarder. Step One: Disable Automatic Traction

Control for Both the Engine and Brake

1. Gain access to the 18-pin harness connector.

Remove the wires that were connected to the D2

and D3 pins.

FEDCBA

Traction Modulator

Source

Traction

Modulator Sink/

Common

FIGURE 3 - 18-PIN CONNECTOR

REPLACEMENT ECUs HAVE A LABEL:

ECU DOES NOT SUPPORT IN-CAB TRAILER ABS WARNING

LAMP (PLC) OR J1922 ENGINE COMMUNICATIONS

1 2

Inhaltsverzeichnis

Seite 1 - Technical Bulletin

Technical BulletinBulletin No: TCH-013-022 Effective Date: 11/2/2012 Cancels: N/A Page: 1 of 2Subject: Modications for J1922 Engine

Seite 2 - WARNING! PLEASE READ AND

Bulletin No: TCH-013-022 Effective Date: 11/2/2012 Cancels: N/A Page: 2 of 2FIGURE 4 - RELAY SWITCH WIRING DIAGRAMStep Two: Enable Retarder2. Make

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BENDIX TCH-013-022 Bedienungsanleitung

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