Opel Frontera UE. Manual - part 41

1A–136

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

Individual Inspection

Interior Temperature Sensor

1. Disconnect the interior temperature sensor

connector (I–4).

2. Measure resistance between the interior

temperature sensor side terminal     No.I4–3 and
No.I4–4.

865RX007

Solar Radiation Sensor

1. Disconnect the solar radiation sensor connector (I–

50).

2. Measure the current value on the solar radiation

sensor when placed it     approximately 15 cm away
from 60W incandescent lamp.

C01RX013

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

1A–137

Outside Air Temperature Sensor

1. Disconnect the connector (C–8) on the outside air

temperature     sensor.

2. Measure resistance between the outside air

temperature sensor side     terminals. 

C01RX012

Power Transistor 

1. Remove the power transistor connector (B–35) from

the evaporator     assembly. 

2. Check the conduction between the power transistor

side     terminals.

C01RX015

MAX HI Relay

1. Remove the MAX – HI relay connector (B–25) from

the blower     assembly.

2. Check the conduction between the MAX – HI relay

side     terminals.

C01RX014

Aspirator (Interior Temperature Sensor)

1. Turn on the ignition switch (the engine is started).

Start the air conditioner     in “Full Auto".

2. Make sure that the interior sensor suctions cigarette

smokes and     such.

1A–138

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

Interior Temperature Sensor

1. Dismount the interior temperature sensor from the

automatic heater/air     conditioner control unit.
Connect (+) end and (-) end of the battery to the
aspirator motor     side terminals No.I4–1 and No.I4–
2, respectively, then check if the motor     runs
normally.

865RS017

Heater (X–6), Thermostat (X–5), Condenser
Fan     (X–9) And Compressor (X–4) Relay

1. Disconnect relays and check for continuity and

resistance between relay     terminals.

• For handling of these relays, refer to Heater Relay

in this     section.

901RX071

Condenser Fan

1. Disconnect the condenser fan connector.

2. Connect the battery positive terminal to the

condenser fan side connector     terminal No.C24-2
and negative to the No.C24-1.

3. Check that condenser fan is rotating correctly.

875RW010

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

1A–139

Triple Pressure Switch (V6, A/T)

1. Disconnect the connector and check for continuity

between pressure switch     side connector terminals
(1) and (2).

2. Reconnect the connector to activate the A/C switch,

and check to see if there is continuity between the
chassis side connector terminal (3) and (4) and the
fan operates.

875RX009