Allison MD 3560 User Manual

TS2470EN
Printed in the U.S.A. Copyright © 1998 General Motors Corp.
Troubleshooting
Manual
Division of General Motors Corporation
P.O. Box 894 Indianapolis, Indiana 46206-0894
May 1998
Revision 1, 199910
Allison Transmission
MD/HD/B Series Transmissions
WTEC II Controls
(Pre-TransID and TID 1)
MD 3060/MD 3066/MD 3560(P)(R)
MD 3070PT
HD 4060/HD 4560(P)(R)
B 300/B 400/ B 500(P)(R)

Allison MD 3560 Specifications

General

Type	Dynamic
Impedance	600 Ohms
Polar Pattern	Cardioid
Connector	XLR
Color	Black

Summary

IMPORTANT SAFETY NOTICE

WARNINGS, CAUTIONS, AND NOTES

Explains the meaning and usage of WARNING, CAUTION, and NOTE statements throughout the manual.

SECTION 1. GENERAL DESCRIPTION

1–2. ELECTRONIC CONTROL UNIT (ECU)

Details the ECU's role as the system's brain, processing inputs to control transmission functions.

1–7. WIRING HARNESSES

1–8. VEHICLE INTERFACE MODULE

SECTION 2. DEFINITIONS AND ABBREVIATIONS

2–1. DO NOT SHIFT LIGHT

Explains the function and indication of the DO NOT SHIFT light for transmission faults.

2–2. DIAGNOSTIC DATA READER

Describes the Pro-Link® 9000 diagnostic tool used for data reading and troubleshooting.

SECTION 3. BASIC KNOWLEDGE

3–1. BASIC KNOWLEDGE REQUIRED

3–4. IMPORTANT INFORMATION IN THE TROUBLESHOOTING PROCESS

Highlights critical precautions and information necessary before starting troubleshooting.

SECTION 4. WIRE CHECK PROCEDURES

4–1. CHECKING OPENS, SHORTS BETWEEN WIRES, AND SHORTS-TO-GROUND

Details procedures for testing wire continuity and shorts using a Volt-Ohmmeter.

4–2. CHECKING AT TRANSMISSION CONNECTOR AND THE INTERNAL HARNESS FOR OPENS, SHORTS BETWEEN WIRES, AND SHORTS-TO-GROUND

Specific procedures for checking wire integrity at the transmission connector and internal harness.

SECTION 5. OIL LEVEL SENSOR

5–1. ELECTRONIC FLUID LEVEL CHECK (SHIFT SELECTOR)

5–2. ELECTRONIC FLUID LEVEL CHECK (PRO-LINK® 9000)

SECTION 6. DIAGNOSTIC CODES

6–1. DIAGNOSTIC CODE MEMORY

Explains how diagnostic codes are logged, stored, and retrieved by the ECU.

6–2. CODE READING AND CODE CLEARING

Details methods for reading and clearing diagnostic codes via shift selector or Pro-Link tool.

6–5. DIAGNOSTIC CODE LIST AND DESCRIPTION

Provides a comprehensive reference list and descriptions of all WT Series diagnostic codes.

6–6. DIAGNOSTIC CODE TROUBLESHOOTING

Outlines the systematic process for troubleshooting identified diagnostic codes.

SECTION 8. GENERAL TROUBLESHOOTING OF PERFORMANCE COMPLAINTS

Excessive Slippage and Clutch Chatter

Low Pressure Section