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AIRCONDITIONING
TROUBLE SHOOTING :
No. Troubles
Main Inspection Areas Others
1 Fuse is blown easily
O O O O
2 No blower operation
O O O O
Heater relay, Blower motor, Blower
resistor, Blower switch
3 Blower speed does not changes O O O O
Blower Resistor, Blower Switch
4 No compressor operation
O O O O
Magnetic clutch & relay, Compres-
sor, Heater relay, A/C switch
5 A/C lamp does not light
O O O O
Engine RPM signal lines, A/C switch
6 No A/C operation
O O O O O
(No cool air comes out)
7 Room temp. does not decrease O O O O O O
(insufficient cooling)
8 No warm air comes out
O Engine coolant volume, A/C temp.
Control lever, Heater radiator
9 No condenser fan operation
O O O O O Relays (for condenser fan, radiator
fan), Condenser fan motor, con-
denser fuse.
10 No engine idle-up when A/C is on.
O O O
Idle-up VSV, Idle-up actuator,
Vacuum hose line
Note: * Sensors are thermister, pressure switch and water temp. switch.
Fuses
Connectors
Wire Harness
Body Ground
Servo Motors
Sensor Circuit*