PL720 2WD L4-1952cc 2.0L SOHC (Z20) (1985)
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.