
AC–34
AIR CONDITIONING SYSTEM – TROUBLESHOOTING
Blinking Light F D Engine Coolant Temperature Sensor Circuit
CIRCUIT DESCRIPTION
This sensor detects the coolant temperature and sends the appropriate signals to the A/C amplifier.
These signals are used for warm up control when the engine is cold.
Diagnostic Sensor Check Detecting Condition | Trouble Area
Open or short in engine coolant temperature sensor circuit. | • Engine coolant temperature sensor
• Harness or connector between engine coolant temperature sensor and A/C amplifier
• A/C amplifier
WIRING DIAGRAM
A/C Amplifier
5 V
Engine Coolant Temp.
Sensor (For A/C System)
LG-R 11 LG-R 16 TW
IG 1 A13
2
1
V-W 4 V-W 9 SG
IG 1 A13
N08816