5-29
January 24, 2017
Fault Diagnosis and Judgment
CLG835H
Classification of common faults
Fault Diagnosis and Judgment
Classification of common faults
Common fault of air conditioning system includes:
1. The air conditioning panel neither display nor function.
2. No air comes out of air conditioner or air outlet volume of air conditioner is small (in the circumstance
that correct position is selected).
3. It generates heater or natural wind under cooling mode.
4. It generates natural air blowing under heating mode.
Overhauling method
Maintenance method when backlight of A/C panel is not on and button does not work
Note: If the first item is normal, go to the second one, and the like.
If failure is not eliminated by the above steps, it means control panel harness or evaporator harness is
out of order. Please refer to schematic diagram of air conditioning system for troubleshoot procedures .
Items
Inspection items
Description
Troubleshooting methods
1
Check if the machine is started
The air conditioner cannot be used
until the whole vehicle is started
Use the air conditioning when the
complete engine is started
2
Whether the A/C fuse is burned
If fuse is burned, check whether
wiring and each load are short-
circuited
Replace, repair short circuit ele-
ments or parts
3
Connector XL8 is connected or not
Whether the connectors at both
ends of control panel harness is
properly connected
Whether there are problems such
as poor contact and exit of contact
pin
Repair the damaged parts
4
Pull out connector XL8 and check
every pin with a multimeter
Wire 220 (gray) should be earthed
Line #138 (orange) should be high
level
Line #800 (white) should be high
level
Wire #484 (white) should be sus-
pended
It indicates failure of complete
engine circuit in case of any anom-
aly. Refer to the part of electric
appliance in this Instruction for
maintenance
5
Replace control panel
Summary of Contents for CLG835H
Page 2: ......
Page 4: ...Contents January 24 2017 CLG835H...
Page 6: ...1 2 General Information January 24 2017 CLG835H...
Page 38: ...1 34 Machine Inspection Table January 24 2017 CLG835H...
Page 156: ...3 2 Power Train System January 24 2017 CLG835H...
Page 214: ...3 2 Power Train System January 24 2017 CLG835H...
Page 272: ...3 60 Testing and adjustment January 24 2017 Power Train Test CLG835H...
Page 276: ...4 4 Hydraulic System January 24 2017 CLG835H...
Page 552: ...6 2 Driver s Cab System January 24 2017 CLG835H...
Page 608: ...7 2 Structure January 24 2017 CLG835H...
Page 662: ...8 4 Electrical System January 24 2017 CLG835H...
Page 677: ...8 19 January 24 2017 Structure Function Principle CLG835H Power System P18E00014...