The evaporator temperature sensor is installed on the evaporator in the air conditioning unit to detect the cooled air temperature that has passed
through the evaporator and to control the air conditioning. It sends appropriate signals to the A/C amplifier. The resistance of the evaporator
temperature sensor changes in accordance with the cooled air temperature that has passed through the evaporator. As the temperature decreases, the
resistance increases. As the temperature increases, the resistance decreases.
The A/C amplifier applies voltage (5 V) to the evaporator temperature sensor and reads voltage changes as the resistance of the evaporator
temperature sensor changes. This sensor is used for frost prevention.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. READ VALUE USING TECHSTREAM
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Air Conditioner / Data List.
(e) Check the value(s) by referring to the table below.
Air Conditioner
OK:
The display is as specified in the Normal Condition column.
Result:
C -- REPLACE A/C AMPLIFIER
B -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE See: Heating and Air
Conditioning/Testing and Inspection/Symptom Related Diagnostic Procedures
A -- Continue to next step.
2. INSPECT EVAPORATOR TEMPERATURE SENSOR
No comments:
Post a Comment