Terminal Wire Color
Output of 5 V power
source for air flow control
G52-1
WHT
actuator position sensor
and temperature control
actuator position sensor
Output of 5 V power
G52-2
PNK
source for sunload sensor
G52-3
ORN
Ground for sensors
Evaporator temperature
G52-4
WHT/BLK
sensor signal
G52-5
YEL/BLK Sunload sensor signal
Inside air temperature
G52-6
PNK/BLK
sensor signal
G52-7
—
G52-8
RED/BLK Electric power source
G52-9
—
G52-10
—
Ground for HVAC control
G52-11
BLK/ORN
module
G52-12
—
Temperature control
G52-13
YEL
actuator position sensor
signal
Air flow control actuator
G52-14 WHT/BLU
position sensor signal
G52-15
—
Electric power source for
G52-16 WHT/RED
back-up
Normal
Circuit
Voltage
4 – 6 V
4 – 6 V
Below 0.3 V Ignition switch turned ON
3.45 – 3.65 V
2.55 – 2.85 V
1.7 – 2.1 V
About 2.0 V
About 2.8 V
—
—
10 – 14 V
—
—
—
—
Below 0.3 V Ignition switch turned ON
—
—
About 4.0 V
About 2.0 V
About 4.0 V
About 1.6 V Ignition switch ON, air flow selector DEF position
—
—
10 – 14 V
Air Conditioning System: Automatic Type 7B-69
Condition
Ignition switch turned ON
Ignition switch turned ON
Ignition switch turned ON, evaporator temperature 0
°C (32 °F)
Ignition switch turned ON, evaporator temperature
15 °C (59 °F)
Ignition switch turned ON, evaporator temperature
30 °C (86 °F)
Ignition switch turned ON, room temperature 25 °C
(77 °F)
Ignition switch turned ON, room temperature 0 °C
(32 °F)
Ignition switch turned ON
Ignition switch turned ON, temperature selector MAX
COOL position
Ignition switch turned ON, temperature selector MAX
HOT position
Ignition switch turned ON, air flow selector VENT
position
Full-time
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—
—
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