nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Positive Temp Coefficient (PTC) Relay <--> [EFE Relay] > < Positive Temperature Coefficient (PTC) Heater <--> [EFE Heater]|Locations
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Positive Temperature Coefficient (PTC) Heater: Testing and Inspection

Fig. 29 Mixture heater circuit test

    Perform mixture heater circuit test as illustrated in Fig. 29. If voltage is not as specified, check harness, automatic choke relay and mixture heater relay
and repair or replace as necessary. 

Positive Temp Coefficient (PTC) Relay <--> [EFE Relay] > < Positive Temperature Coefficient (PTC) Heater <--> [EFE Heater]|Locations