AIR CONDITIONING
06 - Symptom Troubleshooting
SG06-4
TC070-15-01H
The figure below describes the A/C Compressor Control. The climate control unit
sends an A/C signal to the PCM via the main fuse block and instrument cluster (PJB
and instrument cluster) based on signals sent from the A/C switch, fan switch and
evaporator temperature sensor.
Chose the correct status or insert an appropriate number to complete the conditions
that the PCM will close the circuit of the A/C relay to supply power activating the
magnetic clutch.
1. A/C switch:
ON / OFF
.
2. Fan switch:
OFF position / Other than OFF position (1, 2, 3, or 4)
.
3. Evaporator temperature sensor:
V or more
(4.5 ºC or more)
4. Refrigerant pressure switch:
ON / OFF
.
(Between 0.2 and 3.0 MPa)
Service Tip
1. The LED on the A/C switch goes on when the switch is on. This proves the switch
operates properly. However, it doesn’t exactly tell you the climate control unit
receives the signal.
2. If the blower motor activated with the Fan switch turned on, it proves the Fan
switch is working properly.
4. If there is no refrigerant, the Refrigerant pressure switch is off.
Summary of Contents for TC070-15-01H
Page 12: ...AIR CONDITIONING SG01 Basic System SG01 2 TC070 15 01H A C Components Name the components...
Page 23: ...AIR CONDITIONING SG01 Basic System SG01 13 TC070 15 01H Review Exercise 1 Name the components...
Page 55: ...AIR CONDITIONING SG02 Control System Manual Air Conditioning SG02 17 TC070 15 01H Cont d...
