Page 249 of 3573
AIR CONDITIONING 1BÐ123
Inspection of the Air Conditioner Room Temperature Setup System
¥ Conflicts Between the Set Temperature and Actual Room Temperature
NOReplace the failed sensor.
NO
NO
Failure on the automatic heater/air
conditioner control unit.
YES YESYES
Is the in car sensor intaking the room
air? (Refer to the later section on "Check
Up".)
Is the air mix link properly attached?
(Make sure that selecting FH or FC using
the lever respectively sets the mix door
to the full hot or full cool.)
Are the interior temperature sensor and
the outside air temperature sensor
functioning normally?
Failure on the in car sensor.
Failure on the air mix link or the actuator.
Page 250 of 3573
1BÐ124 AIR CONDITIONING
INDIVIDUAL INSPECTION
In Car Sensor
1. Disconnect the in car sensor connector (I-34).
2. Measure resistance between the in car sensor
side terminal No.3 and No.4 .Sun Sensor
1. Disconnect the sun sensor connector (I-35).
2. Measure the current value on the sun sensor
when placed it approximately 15 cm away from
60W incandescent lamp.
Ambient Sensor
1. Disconnect the connector (C-86) on the ambient
sensor.
2. Measure resistance between the ambient
sensor side terminals. I-34
I-34
Temperature on the Sensor
Temperature Detector(¡C)
Sensor Resistance
Value(k½)
" 6 5 0
4321
-20 0 5 10 15 20
25 30
-10 0 10 20 30 40
17.09
9.93
3.75
2.24
6.0
1.6 30.69
865RX007
½
0
10 0 -10 -20 30 4020 5 10 15 20 25 30
Temperature on the Sensor
Temperature Detector(¡C)
Sensor Resistance
Value(k½)
17.09 30.69
9.93
6.0
3.75
2.24
1.6
C01RX012
Ð Testing rod12
A
Current
value
40µA or more
+
12
21
D06RY00001
Page 251 of 3573

AIR CONDITIONING 1BÐ125
Power Transistor
1. Remove the power transistor connector (I-47)
from the evaporator assembly.
2. Check the conduction between the power
transistor side terminals.
MAX HI Relay
1. Remove the MAX HI relay connector (B-64) from
the blower assembly.
2. Check the conduction between the MAX HI relay
side terminals.In Car Sensor
1. Turn on the ignition switch (the engine is
started). Start the air conditioner in "Full Auto".
2. Make sure that the in car sensor suctions
cigarette smokes and such.
3. Dismount the in car sensor from the automatic
heater/air conditioner control unit. Connect (+)
end and (-) end of the battery to the aspirator
motor side terminals No.1 and No.2
, respectively, then
check if the motor runs normally.I-34
I-34
" 6 5 0
4321
C01RW020
43
3 41
2 21
No continuity between terminals (2) and (4).
Continuity between terminal (2) and (4) when battery
voltage is applied between (1) and (3).
C01RY00003
1
2
3
Terminal
No.Conduction
Conducted (50½ maximum)
Conducted (100½ maximum)
Conducted (220½ maximum) Not conducted
Not conducted 1
µ23
Testing
rod
µ
µ
µ
µ
´
´
´
´
´
1 23
C01RY00002
Page 252 of 3573

1BÐ126 AIR CONDITIONING
ON-VEHICLE SERVICE
Power Transistor
Legend
(1) Evaporator Assembly
(2) Passenger Knee Bolster Reinforcement
(3) Lower Cluster
(4) Front Console
(5) Glove Box
(6) Instrument Panel Passenger Lower Cover
(7) Power Transistor Connector
(8) Power Transistor
Removal
1. Remove front console.
2. Remove lower cluster.
3. Remove glove box.
4. Remove instrument panel passenger lower
cover.
5. Remove passenger knee bolster reinforcement.
6. Disconnect the power transistor connector.
7. Remove power transistor.
Installation
To install, follow the removal step in the reverse
order.
Automatic Heater/Air Conditioner Control
Unit
Legend
(1) Connector
(2) Automatic Heater / Air Conditioner Control
Unit
(3) Instrument Panel Cluster
(4) Set Screw
Removal
1. Disconnect the battery ground cable.
2. Remove instrument panel cluster.
·Refer to Instrument Panel Assembly in Body
Structure section.
3. Disconnect the automatic heater / air conditioner
control unit connector.
4. Remove automatic heater/ air conditioner
control unit.
Installation
To install, follow the removal step in the reverse
order.
7
6
5
432 81
874RY00001
This illustration is based on RHD
; &