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Home >> Infiniti >> 2002 >> Q45 V8-4.5L (VK45DE) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> Power Supply Testing
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Power Supply Testing

POWER SUPPLY CIRCUIT FOR ECM

EC-MAIN-01:







EC-MAIN-02:







Wiring Diagram


Step 1 - 3:




Step 4 - 6:




Step 7 - 10:




Step 11 - 13:




Step 14 - 18:




Diagnostic Procedure

Component Inspection

ECM RELAY




1. Apply 12 V direct current between ECM relay terminals 1 and 2.




2. Check continuity between relay terminals 3 and 5, 6 and 7.
3. If NG, replace ECM relay.
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