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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Heater & Air Conditioning Control System (DTC/Circuit Diagnosis) (Except Hybrid)) >> DTC/Circuit Diagnosis >> PTC Heater Relay >> Component Inspection

Component Inspection

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

  1. CHECK PTC HEATER RELAY

    1. Turn ignition switch OFF.
    2. Remove PTC heater relay.
    3. Check continuity between PTC heater relay terminal 3 and 5 when voltage is supplied between terminal 1 and 2.
      Fig 1: Checking Continuity Between Blower Relay Terminal 3 And 5
      G05915627Courtesy of NISSAN NORTH AMERICA, INC.
      Terminal Voltage Continuity
      3 5 ON Yes
      OFF No

    Is the inspection result normal?

    YES 

    Inspection End.

    NO 

    Replace PTC heater relay.