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Devices included into the ACC system

Mode control engine

Way of checking.

  • Disconnect 6-contact socket of the mode control engine (B).
  • If contact 1 of the mode control engine B to connect to the power supply, and contact 2 to earth, the mode control engine will be turned and will stop in position VENT. If to connect contact on the contrary, the mode control engine will be led and will stop in position DEF.

Attention: If the mode control engine does not rotate, remove the engine and check, whether the lever mechanism of mode control and flap freely goes. If the lever mechanism of the mode control and flap move freely, they replace the mode control engine.

  • After having measured the value of resistance between plugs 4 and 6, they check if the value of resistance is approximately 6 kOm.
  • At measurement of value of resistance, between plugs 3 and 4 they check whether the value of resistance 1,2 kOm in position VENT and 4,8 kOm in position DEF turn out to be.
  • At norm of the above-stated points of check they remove the autotemperature regulator and check presence of breakage and short circuit of wires between the mode control engine and the autotemperature regulator.
Display lamp of the mode control engine - A
Display lamp of the mode control engine - A