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Home >> Infiniti >> 2012 >> QX56 AWD >> Repair and Diagnosis >> Suspension >> Suspension Control Systems >> Air LEVELIZER Control System >> DTC/Circuit Diagnosis >> DTC C1802: Air Sus COMPRS Relay >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

MALFUNCTION DETECTED CONDITION AND POSSIBLE CAUSE

DTC Display item Malfunction detected condition Possible cause
C1802 AIR SUS COMPRS RELAY
  • Output voltage of the air compressor relay remains 9 V or less continuously for 5 seconds during air compressor ON signal output by the air levelizer control module.
  • Output voltage of the air compressor relay remains 2 V or more continuously for 10 seconds during air compressor OFF signal output by the air levelizer control module.
  • Harness or connector
  • Air compressor relay
  • Air levelizer control module
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