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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 Function Check

Component Function Check

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 POWER SUPPLY CIRCUIT

    Check that an operation noise of PTC heater relay (located in relay box) can be heard when operating the rear air conditioning system in heat mode.

    Is the inspection result normal?

    YES 

    PTC heater relay power supply circuit is OK.

    NO 

    Refer to DIAGNOSIS PROCEDURE .

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