John Deere 9120, 9220, 9320, 9420, 9520 and 9620 Tractors Index:

SECTION 210—GENERAL Group 61—AutoTrac Steering System
Group 05—Safety Group 70A—Hydraulic System (Standard)
Group 10—General Specifications Group 70B—Hydraulic System (Scraper High Flow)
Group 15—General References Group 70C—Hydraulic System (Ag High Flow)
Group 90—ATC System (010001—)
211
SECTION 211—SERVICE CODES
Group ACU—ACU Code Diagnostics SECTION 220—ENGINE
Group AMS—AMS Code Diagnostics Group 10—Operational Checks
Group ASU—ASU Code Diagnostics Group 15—Tests and Adjustments
Group ATC—ATC Code Diagnostics Group 20—Theory of Operation
Group CCU—CCU Code Diagnostics
Group ECU—ECU Code Diagnostics SECTION 230—FUEL AND AIR
Group HCU—HCU Code Diagnostics Group 20—Theory of Operation
Group ICU—ICU Code Diagnostics
Group JDL—JDL Code Diagnostics SECTION 240—ELECTRICAL
Group PCU—PCU Code Diagnostics Group 15—Tests and Adjustments
212
Group SCo—SCo Code Diagnostics Group 20—Theory of Operation
Group SCS—SCS Code Diagnostics Group 25—Schematics and Diagrams
Group SCU—SCU Code Diagnostics
Group SSU—SSU Code Diagnostics SECTION 245—CONTROL UNITS
Group SUP—SUP Code Diagnostics Group 05—Codes and Addresses
Group ACU—ACU References
SECTION 212—OBSERVABLE SYMPTOMS Group ASU—ASU References
Group 05—Axles Group ATC—ATC References
Group 15—Electrical Group CCU—CCU References
Group 16—Ag Management Solutions (AMS) Group ECU—ECU References
Group 20—Hitch Group HCU—HCU References
213
Group 25—Heating, Ventilation, and Air Group ICU—ICU References
Conditioning (Standard) Group PCU—PCU References
Group 26A—Heating, Ventilation and Air Group PRF—PrF References
Conditioning – CLIMATRAK™ (ATC) Group SCo—SCo References
(—009999) Group SCS—SCS References
Group 26B—Heating, Ventilation and Air Group SCU—SCU References
Conditioning – CLIMATRAK™ (ATC) Group SSU—SSU References
(010001—) Group SUP—SUP References
Group 30—Operator Station
Group 40—Power Take-Off SECTION 246A—AG MANAGEMENT SOLUTIONS
Group 45—Selective Control Valve (AMS) — GREENSTAR
220
Group 50—Steering Group GSS—Greenstar™ System References
Group 60—Manual Shift Transmission
SECTION 246B—AG MANAGEMENT SOLUTIONS
SECTION 213—SYSTEM DIAGNOSIS (AMS) — JDLINK™
Group 50—Powershift Transmission Group 10A—Accessing Diagnostic Codes and
Group 55—Manual Shift Transmission
Group 60—Steering System Continued on next page
All information, illustrations and specifications in this manual are based on
the latest information available at the time of publication. The right is
reserved to make changes at any time without notice.
230
COPYRIGHT © 2006
DEERE & COMPANY
Moline, Illinois
All rights reserved
A John Deere ILLUSTRUCTION® Manual
Previous Editions
Copyright © 2001, 2002, 2003, 2004, 2005
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PN=1
Contents
210
Addresses 9000 Series Field Installed
Group 10B—Diagnostic Trouble Codes Group 15Z—AutoTrac Steering Control Unit
Group 10C—Diagnostic Addresses Identification
Group 15A—JDLINK™ Machine Messenger Group 15AA—AutoTrac Steering Control Unit Diag –
Diagnostics 9000 Series Factory Installed
211 Group 15AB—Steering Control Unit Diag – 9000
SECTION 246C—AG MANAGEMENT SOLUTIONS Series Field Installed
(AMS) — AUTOTRAC Group 20A—Circuit Code Listing
Group 05A—How to Use This Diagnostic Group 20B—Connector Information
Information
Group 10A—Accessing Diagnostic Addresses and SECTION 246D—AG MANAGEMENT SOLUTIONS
Codes (AMS) — FIELD DOC™
Group 10B—Diagnostic Trouble Codes Group 15A—GPS Position and STARFIRE Receiver
Group 10C—Diagnostic Addresses Operation and Tests
Group 15A—AutoTrac Identification Group 15B—FIELD DOC Basic Operation and Tests
Group 15B—AutoTrac Diagnostics – 9000 Series
212
Factory Installed SECTION 250—POWERSHIFT TRANSMISSION
Group 15C—AutoTrac Diagnostics – 9000 Series Group 05—Preliminary Checks
Field Installed Group 10—Operational Checks
Group 15D—GREENSTAR™ Parallel Tracking Group 15—Tests and Adjustments
Identification Group 20—Theory of Operation
Group 15E—Parallel Tracking Diagnostics – 9000 Group 25—Schematics and Diagrams
Series Factory Installed
Group 15F—Parallel Tracking Diagnostics – 9000 SECTION 255—MANUAL SHIFT TRANSMISSION
Series Field Installed Group 05—Preliminary Checks
Group 15G—GREENSTAR™ Display Diagnostics Group 10—Operational Checks
Group 15H—GREENSTAR™ Mobile Processor Group 15—Tests and Adjustments
213
Diagnostics Group 20—Theory of Operation
Group 15I—STARFIRE™ Receiver Diagnostics Group 25—Schematics and Diagrams
Group 15J—GREENSTAR™ KeyCard Diagnostics
Group 15K—AutoTrac CAN Bus Identification SECTION 256—DRIVE SYSTEMS
Group 15L—AutoTrac CAN Bus Diagnostics – 9000 Group 10—Operational Checks
Series Factory Installed Group 15—Tests and Adjustments
Group 15M—AutoTrac CAN Bus Diagnostics – 9000 Group 20—Theory of Operation
Field Installed Group 25—Schematics and Diagrams
Group 15N—AutoTrac CCD Bus Identification
Group 15O—AutoTrac CCD Bus Diagnostics – 9000 SECTION 260—STEERING AND BRAKES
Series Factory Installed Group 05—Preleminary Checks
220
Group 15P—AutoTrac CCD Bus Diagnostics – 9000 Group 10—Operational Checks
Series Field Installed Group 15—Tests and Adjustments
Group 15Q—AutoTrac Power Identification Group 20—Theory of Operation
Group 15R—AutoTrac Power Diagnostics – 9000 Group 25—Schematics and Diagrams
Series Factory Installed
Group 15S—AutoTrac Power Diagnostics – 9000 SECTION 270—HYDRAULICS
Series Field Installed Group 05—Preliminary Checks
Group 15T—AutoTrac Status Identification Group 10—Operational Checks
Group 15U—AutoTrac Status Diagnostics – 9000 Group 15—Tests and Adjustments
Series Factory Installed Group 20—Theory of Operation
Group 15V—AutoTrac Status Diagnostics – 9000 Group 25—Schematics and Diagrams
230
Series Field Installed
Group 15W—AutoTrac Steering Response SECTION 290—OPERATOR STATION
Identification Group 05—Preliminary Checks
Group 15X—AutoTrac Steering Response Diag. – Group 10—Operational Checks
9000 Series Factory Installed
Group 15Y—AutoTrac Steering Response Diag. – Continued on next page
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