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Check of an electric circuit and replacing the motor fan heater and air conditioner
Check circuit | - Check all fuses and electrical connectors on the circuit is mounted and the presence of traces of corrosion. Make sure the battery is fully charged.
- Translating transmission in position "P" (Park) and charged the parking brake, turn the ignition key to ON (without starting the engine).
- The heater fan is located under the dashboard glove compartment near the engine compartment bulkhead. Push the tabs on one of the screws securing the fan motor and release him from the harness. Pull the harness down, thereby facilitating the disconnection of the electric connector.
- Connect the electric socket of the motor fan heater voltmeter.
 | - Disconnect the electric heater fan motor connector and connect the harness attached to his half of the voltmeter.
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- Subsequently switch the fan switch in all positions, watching the readings. Changing the voltage fixed by talking about relevant changes in the fan speed (when switching circuit breaker). The minimum speed corresponds to the minimum supply voltage, while the translation switch to the high speed fan is supplied power to the bypass resistor and reaches a maximum value of 12 V.
- If the voltage is fixed, but the fan is not spinning, the jumper between the ground terminal of the motor and the "good" weight of the chassis of the car. Equipped with a fuse wire is connected between the positive battery terminal and the positive terminal of the connector half on the motor side. Now, if the motor starts to rotate, remove additional wires (jumpers), and if the motor is turned off when the jumper on the weight will stop immediately, check the grounding of the motor. If after the correction the motor starts to operate, it is most likely faulty.
 | - Connect the ground bus and equipped with a fuse wire from the positive terminal of the battery directly to the part of the electrical connector from the fan motor and check whether the motor is now.
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The resistive heater blower motor assembly Resistive fan assembly is located on the heater housing. The board assembly installed a few resistors, corresponding to the four fan speed.  | Location resistive heater fan assembly. |
| - Remove the assembly from his seat and inspect it for damage. Check the conductivity of the assembly between its terminals. If the overheat limiting circuit is broken, you should make an appropriate substitution setting only identical replacement parts.
 | - Unscrew and remove the two screws from the holder of the fan motor resistor.
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 | - Using a voltmeter, check the circuit between the fan switch and resistor by measuring the voltage across the resistor end of the harness. Check each wire at each of the rates.
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The motor operates on only one of the velocity | - If the motor voltage is not available, disunite an electric socket resistive assembly and check for voltage it. If power is present only at the terminals of the connector, check the conductivity of a resistive assembly and wiring between the assembly and the motor. Wire also check for signs of a short circuit.
- If there is no voltage at the assembly, remove the heater control panel (see section Removing and installing heater control assembly, and air conditioning) and by turning the ignition switch ON, measure the voltage on the connector switch the heater blower motor.
- If no voltage, check the wiring between the assembly block of safety locks and switch for open and short-circuiting.
- If the voltage is the case, connect one end of a long wire to the terminal energized switch connector. The other end of the wire alternately connect to each of the power terminals on the resistive assembly. If now the engine is operating normally, replace the switch.
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