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System Tests

NOTE: The Hydraulic Cooling fan will set a Diagnostic Trouble Code (DTC) when a Hydraulic Cooling fan problem arises. For 2003 models, see DTC P1480: COOLING FAN SPEED CONTROL SOLENOID under DIAGNOSTIC TESTS in SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. For 2004 models, see DTC P1480: COOLING FAN SPEED CONTROL SOLENOID under DIAGNOSTIC TESTS in appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE. If a DTC does not exist, check cooling fan speed control solenoid valve. See COMPONENT TESTS  .
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