wsm M7040 - Page 536

CABIN
M6040, M7040, WSM
10-S2
Insufficient Cooling
(Compressor Does
Not Rotate Properly)
Belt slipping Adjust or replace 10-S42
Magnetic clutch defective Repair or replace 10-S22
Compressor defective Replace 10-S42
Insufficient Cooling
(Others)
Thermostat defective Replace –
Water valve defective Replace –
Condenser fin clogged with dust Clean G-31
Expansion valve defective Replace –
Insufficient Heating Water valve defective Replace –
Temperature motor defective Check and repair 10-S28
Insufficient coolant Replenish G-10
Too Low Air Flow
Rate (Blower Motor
Does Not Run)
Blower fan switch defective Check and repair 9-S24
A/C main relay defective Replace 9-S46
Brush in poor contact Replace –
Fuse blown out Replace 9-S11
Wrong wiring or loose connections Check and repair –
Too Low Air Flow
Rate (Flow Rate Does
Not Change in 4
Steps)
Blower resistor defective Replace 10-S27
Relay defective Replace 9-S46
Blower fan switch defective Replace 9-S24
Too Low Air Flow
Rate (Others)
Blower is not tightened enough Check and repair 10-S27
Blower deformed Replace 10-S27
Blower in contact with casing Check and repair –
Obstacle at or near suction port Check and repair –
Evaporator frosted Clean or replace –
Filter clogged Clean or replace G-30, G-31
Blow duct clogged or missing Check and repair –
Insufficient Cooling
(Compressor
Magnetic Clutch
Does Not Work)
Low battery voltage Charge –
Rotor in contact with stator Replace 10-S42
Wrong wiring loose connections Check and repair –
Relay defective Replace 9-S46
Coil shortage Replace –
Ground malfunction Check and Repair –
Coil burst out Replace –
Insufficient Cooling
(Hi-pressure Level is
Too High)
Refrigerant overcharged Check with manifold
gauge
10-S21
Condenser clogged with dust and dirt Clean G-31
Air mixed Check with manifold
gauge
10-S15
Insufficient Cooling
(Hi-pressure Level is
Too Low)
Refrigerant too short Check with manifold
gauge
10-S21
Compressor discharge valve damaged Replace 10-S42
Compressor gasket damaged Replace 10-S42
Low-pressure pipe in trouble (Cracked or
clogged)
Replace 10-S47
Symptom Probable Cause Solution
Reference
Page
KiSC issued 07, 2012 A