1998 Allison Transmission TS2470 WTEC II Electronic Controls Troubleshooting Manual – PDF DOWNLOAD

Description

1998 Allison Transmission TS2470 WTEC II Electronic Controls Troubleshooting Manual – PDF DOWNLOAD

DESCRIPTION:

1998 Allison Transmission TS2470 WTEC II Electronic Controls Troubleshooting Manual – PDF DOWNLOAD

MD/HD/B SERIES TRANSMISSIONS
Troubleshooting
Manual
1998 MAY
REV. 1 1999 OCTOBER
REV. 2 2004 JULY
REV. 3 2005 DECEMBER
TS2470EN
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)

FOREWORD — How to Use This Manual :

This manual provides troubleshooting information for Allison Transmission (AT), MD/HD/B Series
Transmissions. Service Manuals SM2148EN and SM2457EN, and Parts Catalogs PC2150EN and PC2456EN may
be used in conjunction with this manual.
This manual includes:
•Description of the WTEC II electronic control system.
•Description of the electronic control system components.
•Description of diagnostic codes, system responses to faults, and troubleshooting.
•Wire, terminal, and connector repair information.
Specific instructions for using many of the available or required service tools and equipment are not included in
this manual. The service tool manufacturer will furnish instructions for using the tools or equipment.
Additional information may be published from time to time in Service Information Letters (SIL) and will be
included in future revisions of this and other manuals. Please use these SILs to obtain up-to-date information
concerning Allison Transmission products.
This publication is revised periodically to include improvements, new models, special tools, and procedures. A
revision is indicated by a letter suffix added to the publication number. Check with your Allison Transmission
service outlet for the currently applicable publication. Additional copies of this publication may be purchased from
authorized Allison Transmission service outlets. Look in your telephone directory under the heading of
Transmissions — Truck, Tractor, etc.

TABLE OF CONTENTS:

1998 Allison Transmission TS2470 WTEC II Electronic Controls Troubleshooting Manual – PDF DOWNLOAD

Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii
SAFETY INFORMATION
Important Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii
Warnings, Cautions, and Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii
Trademarks Used in This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv
Shift Selector Terms and Display Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv
SECTION 1. GENERAL DESCRIPTION
1–1. TRANSMISSION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1–1
1–2. ELECTRONIC CONTROL UNIT (ECU). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1–3
1–3. SHIFT SELECTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1–3
A. Pushbutton Shift Selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1–3
B. Lever Shift Selector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1–4
1–4. THROTTLE POSITION SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1–5
1–5. SPEED SENSORS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1–5
1–6. CONTROL MODULE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1–6
1–7. WIRING HARNESSES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1–7
A. External Wiring Harness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1–7
B. Internal Wiring Harness. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1–9
1–8. VEHICLE INTERFACE MODULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1–10
1–9. TRANSID FEATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1–11
A. General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1_11
B. Transmission Changes Versus TransID Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1–11
C. Compatibility Between TransID Level and ECU Calibration Level . . . . . . . . . . . . . . . . . . . . . .1–12
SECTION 2. DEFINITIONS AND ABBREVIATIONS
2–1. DO NOT SHIFT LIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2–1
2–2. ALLISON TRANSMISSION DIAGNOSTIC TOOLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2–1
2–3. ABBREVIATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2–3
SECTION 3. BASIC KNOWLEDGE
3–1. BASIC KNOWLEDGE REQUIRED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3–1
3–2. USING THE TROUBLESHOOTING MANUAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3–2
3–3. SYSTEM OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3–2
3–4. IMPORTANT INFORMATION IN THE TROUBLESHOOTING PROCESS. . . . . . . . . . . . . . . .3–2
3–5. BEGINNING THE TROUBLESHOOTING PROCESS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3–3
SECTION 4. WIRE TESTING PROCEDURES Page
4–1. TESTING FOR OPENS, SHORTS BETWEEN WIRES,
AND SHORTS-TO-GROUND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1
4–2. TESTING AT TRANSMISSION CONNECTOR AND THE INTERNAL HARNESS
FOR OPENS, SHORTS BETWEEN WIRES, AND SHORTS-TO-GROUND. . . . . . . . . . . . . . . 4–2
SECTION 5. OIL LEVEL SENSOR
5–1. ELECTRONIC FLUID LEVEL TEST (SHIFT SELECTOR). . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1
A. Fluid Level Test Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1
5–2. ELECTRONIC FLUID LEVEL TEST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–4
A. Fluid Level Test Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–4
SECTION 6. DIAGNOSTIC CODES
6–1. DIAGNOSTIC CODE MEMORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–1
6–2. CODE READING AND CODE CLEARING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–1
A. Reading Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–1
B. Clearing Active Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–2
C. Manually Clearing Codes and Active Indicators From the Code List . . . . . . . . . . . . . . . . . . . 6–2
D. Exiting the Diagnostic Display Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–3
6–3. DIAGNOSTIC CODE RESPONSE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–3
6–4. SHIFT SELECTOR DISPLAYS RELATED TO ACTIVE CODES . . . . . . . . . . . . . . . . . . . . . . . 6–3
6–5. DIAGNOSTIC CODE LIST AND DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–4
6–6. DIAGNOSTIC CODE TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–17
A. Beginning the Troubleshooting Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–17
B. Solenoid Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–17
C. Diagnostic Code Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–18
D. Diagnostic Code 13 and 35 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–18
SECTION 7. INPUT AND OUTPUT FUNCTIONS
A. INPUT FUNCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–1
B. OUTPUT FUNCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7–3
SECTION 8. GENERAL TROUBLESHOOTING OF PERFORMANCE COMPLAINTS
GENERAL NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8–1
TROUBLESHOOTING PERFORMANCE COMPLAINTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8–2
APPENDICES Page
A. IDENTIFICATION OF POTENTIAL CIRCUIT PROBLEMS . . . . . . . . . . . . . . . . . . . . . . . . . . .A–1
B. TESTING CLUTCH PRESSURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B–1
C. SOLENOID AND CLUTCH CHART. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C–1
D. WIRE/CONNECTOR CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .D–1
E. CONNECTOR PART NUMBERS, TERMINAL PART NUMBERS,
TOOL PART NUMBERS, AND REPAIR INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . .E–1
F. THROTTLE POSITION SENSOR ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F–1
G. MISCELLANEOUS ITEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G–1
H. HYDRAULIC SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .H–1
J. MD/HD/B WIRING SCHEMATICS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .J–1
K. SOLENOID AND TEMPERATURE CHARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .K–1
L. EXTERNALLY-GENERATED ELECTRONIC INTERFERENCE. . . . . . . . . . . . . . . . . . . . . . . .L–1
M. DIAGNOSTIC TREE — MD/HD/B SERIES HYDRAULIC SYSTEM . . . . . . . . . . . . . . . . . . . .M–1
N. ALLISON DOC™ FOR PC–SERVICE TOOL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . .N–1
P. INPUT/OUTPUT FUNCTION WIRING SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P–1

IMAGES PREVIEW OF THE MANUAL:

1998 ALLISON TRANSMISSION TS2470 WTEC II ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL – PDF DOWNLOAD:

PLEASE NOTE:

• This is the SAME manual used by the dealers to troubleshoot any faults in your vehicle. This can be yours in 2 minutes after the payment is made.
• Contact us at [email protected] should you have any queries before your purchase or that you need any other service / repair / parts operators manual.

S.V