Fan resistor
Measure the resistance between the connector pins.
Evaporator air temperature sensor
Measure the resistance between the leads.
Rated resistance:
- at 15°C - 2.3 kOhm
- at 25°C - 1.5 kOhm
Air conditioner switch
1. Make sure there is no continuity between the terminals "+V" And "GND".
2. If there is continuity between the EFI ECU and GND pins, check that there is no continuity between the EFI ECU and +V pins.
3. If there is no continuity between the EFI ECU and GND pins, check for continuity between the EFI ECU and +V pins.
Fan speed switch (except Sirion)
1. Check the conductivity of the heater fan speed switch.
2. Make sure that when you connect the battery to the terminals of the connector, the fan motor turns on.
Fan speed switch (Sirion)
Check the conductivity of the heater fan speed switch.