1998 ISUZU TROOPER Service Repair Manual

Page 217 of 3573

ISUZU TROOPER 1998  Service Repair Manual AIR CONDITIONING  1BÐ91
6. Heating Start Timing Control
When the automatic heater/air conditioner is
started, heating is turned on under following
conditions.
·The detected temperature of thermo uni

Page 218 of 3573

ISUZU TROOPER 1998  Service Repair Manual 1BÐ92 AIR CONDITIONING
TROUBLESHOOTING
Troubleshooting, Its Overview and Procedures
The full automatic heater and air conditioner equips with the "Self-Diagnosis Function" to check its major
componen

Page 219 of 3573

ISUZU TROOPER 1998  Service Repair Manual AIR CONDITIONING  1BÐ93
Check of Auto Amplifier (Automatic air conditioner control unit) Power Supply System
¥ This check is required because a trouble on the auto amplifier (control unit) power sup

Page 220 of 3573

ISUZU TROOPER 1998  Service Repair Manual 1BÐ94 AIR CONDITIONING
Chart "A" : Check of Auto Amplifier Power Supply System
NOHarness disconnection or improper grounding.
NOHarness disconnection or improper grounding.
NOHarness disconnection or

Page 221 of 3573

ISUZU TROOPER 1998  Service Repair Manual AIR CONDITIONING  1BÐ95
Performance and Movement checklist for Automatic Air Conditioner Related Parts
Start the engine, and when the engine coolant reached 60¡C check performance and movement of th

Page 222 of 3573

ISUZU TROOPER 1998  Service Repair Manual 1BÐ96 AIR CONDITIONING
Checking ApproachNo.ItemAcceptance criteria
Condition Operation
Change the
temperature gradually
starting with 20¡C up to
30¡C.The following phenomena shall be
recognized.
¥

Page 223 of 3573

ISUZU TROOPER 1998  Service Repair Manual AIR CONDITIONING  1BÐ97
TROUBLESHOOTING WITH SELF-DIAGNOSIS FUNCTION
1. Overview of Self-Diagnosis Function
The self-diagnosis is implemented in 3 steps for each target. For detail of check procedure

Page 224 of 3573

ISUZU TROOPER 1998  Service Repair Manual 1BÐ98 AIR CONDITIONING
*1. Displaying the Current Trouble Diagnosing Table
Start the engine while holding down both the Auto switch and the DEF switch on the control panel, and
the table will appear