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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 194 (Heater & Air Conditioning Control System - Automatic Air Conditioner (DTC/Circuit Diagnosis)) >> DTC/Circuit Diagnosis >> PTC Heater Relay >> Component Function Check

Component Function Check

WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. 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 relays (located in relay box) can be heard when operating the 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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