100%
AC–36
AIR CONDITIONING SYSTEM – TROUBLESHOOTING
Blinking Light DEF Solar Sensor Circuit
CIRCUIT DESCRIPTION
A photo diode in the solar sensor detects solar radi–
ation and sends signals to the A/C amplifier.
Resistance of photodiode
High
Low
Weak Strong
Strength of
solar radiation
Diagnostic Sensor Check Detecting Condition Trouble Area
Open or short in solar sensor circuit.
Please not that blinking of the LED for DEF is not
abnormal when the sensor is not receiving solar
radiation.
• Solar sensor
• Harness or connector between solar sensor and
A/C amplifier
• A/C amplifier
WIRING DIAGRAM
A/C Amplifier
5 V
BR-W 2
A13 S5
Solar Sensor 2
1
Y-G 17
A13 TS
V-W 9
← – – A13 SG
NO8813