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FLA -486 FUEL SYSTEM DTC P0647 A/C CLUTCH RELAY CONTROL CIRCUIT HIGH GENERAL DESCRIPTION E1B5EB25 Refer to DTC P0646. DTC DESCRIPTION ECC5A729 PCM monitors inputted voltage through A/C compressor relay. Checking voltage every 10 sec. under detecting condition, DTC DETECTING CONDITION ECABD7EA Item Detecting Condition Possible cause DTC Strategy • Detects circuit short to high voltage Enable Conditions • After 0.5 sec under conditions below Threshold value • Short to power Diagnosis Time • Continuous (More than 5 seconds failure for every MIL On Condition • DTC only (NO MIL ON) • Poor connection relay circuit • Faulty A/C relay SPECIFICATION E468E9AC Refer to DTC P0646. SCHEMATIC DIAGRAM E034F9E5 Refer to DTC P0646. MONITOR DTC STATUS EB070E3B Refer to DTC P0646. TERMINAL AND CONNECTOR INSPECTION E5D3822E Refer to DTC P0646. POWER CIRCUIT INSPECTION EEB7A706 1. Check voltage 1) IG "OFF". 2) Disconnect A/C relay connector. 3) IG "ON" and ENG "OFF" 4) Measure the voltage between terminal 2 of A/C relay harness connector and chassis ground. |