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Home >> Volvo >> 1993 >> 850 Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Miscellaneous Controls >> Cooling Fan >> Cooling Fan Motor

Cooling Fan Motor

  1. Connect Measuring Unit (981 3190 ) and Adapter (981 3195 ) to distributor ignition ECU. Disconnect negative battery cable. Remove ECU cover located in right front engine compartment. Remove distributor ignition ECU. Press adapter onto ECU and pull lead upward through slot beside module. Press ECU, with adapter connected, into connector in bottom of ECU box. Connect measuring unit to adapter 60-pin connector.
  2. On vehicles without A/C, connect voltmeter between measuring unit terminals No. 20 and 17. On vehicles with A/C, connect voltmeter between measuring unit terminals No. 20 and 25. In both instances, battery voltage should be present. If battery voltage is not present, check wiring between fan motor, relay, and ground.
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