Power transistor (push-button panel type) [Toyota Carina T190]

Measure the resistance between the terminals of the power transistor.

Resistance - 1.9-2.5 kOhm

Checking the work

1. Connect the "+" of the battery through a 12V - 3.4W bulb to terminal "1" of the connector, and connect to terminal "4".

2. Apply battery voltage through the light bulb to terminal "2" and make sure that the light bulb between terminal "1" and "+" of the battery lights up.

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Carina T190: Air conditioning and heater

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Fan resistor
Magnetic valve
Checking servos
Checking the Air Conditioner Control Panel Switches
Checking the fan operation

Interior temperature sensor
Temperature sensor behind the evaporator
Checking the ambient air temperature sensor
Light sensor
Heater radiator coolant temperature sensor