Used copy of Factory Softcover manual with shelf wear.

This Diagnostic Test Procedure covers all 1989 and 1990 YJ vehicles equipped with 2.5 liter engine.

Contents:

Organization

DRBII

• Jeep/Eagle Adapter
• Connecting the DRBII and Adapter
• DRBII - Jeep/Eagle Problems
• How to use the DRBII and Jeep/Eagle Adapter
• How to Perform a System Test

DRBII Menu

• Vehicles Tested
• How to Use
• Configure
• DRBII System
• Fuel System
• Select Vehicle
• Main Menu
• System Tests
• Test Sequence Definitions
• Read Faults
• State Displays
• Module Info Sensors
• Input/Output
• Min/Current/Max
• Actuator Tests
• Adjustments
• Continuity/Voltmeter Tests

Fault Codes

Diagnostic Tests