Komatsu D85EXi-18, D85PXi-18 Dozer Repair Service Manual

Table of Contents

Komatsu D85EXi-18, D85PXi-18 Manual

Main sections and selected subjects identified in the source documentation:

• Manuals: Shop Manual and Operation and Maintenance Manual
• Index and foreword
• Specification
• Structure, function and maintenance standard
• Standard value table
• Testing and adjusting
• Troubleshooting
• Disassembly and assembly
• Maintenance Standard
• Appendix
• Circuit Diagrams
• Index
• | FAILURE CODE [879BKA] A/C Fresh Air Temperature Sensor Open Circuit
• | Details of
• failure
• | Air conditioner controller detects open circuit in outside air temperature sensor.
• | Action of
• controller
• | Air conditioner controller transmits open circuit information of outside air temperature sensor to machine monitor by CAN communication.
• Ignores data of outside air temperature sensor and continues control of air conditioner in automatic air conditioner mode.
• | Phenomenon
• on machine
• (Air conditioner is not affected in manual mode.)
• | Related
• information
• | • After repairing, check if the failure code is cleared by the following procedure.
• Procedure: Turn starting switch to ON position.
• Check if this failure code is displayed on electrical system failure record screen in service
• mode of machine monitor.
• For each connector, see “Installation locations of air conditioner parts and arrangement of
• connectors”.
• Since air conditioner controller connector ACECU has no T-adapter and has small pins,