Diesel Data: Automotive Repair

Auxiliary Heater Element Relay: Testing and Inspection









AIR CONDITIONING: PTC HEATER RELAY:

ON-VEHICLE INSPECTION

1. INSPECT PTC HEATER RELAY





(a) Check the resistance.
(1) Using an ohmmeter, measure the resistance between the terminals.
Standard resistance:






If the result is not as specified, replace the PTC heater relay.