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Engine Control System - Component Testing (CALIFORNIA)
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Cooling Fan
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Component Inspection
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Cooling Fan Motor
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Cooling Fan Motor
Disconnect cooling fan motor harness connectors.
Supply cooling fan motor terminals with battery voltage and check operation.
Speed
terminals
(+)
(-)
Cooling fan motor
Low
1
4
2
3
High
1 and 2
3 and 4
Cooling fan motor should operate.
If NG, replace cooling fan motor.