Toyota Corolla (E120): Ecm power source circuit
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Monitor description
Dtc p0451, p0452 or p0453 is recorded by the ecm when the vapor pressure
sensor malfunctions.
P0451
The ecm senses pressure in the fuel tank using the vapor pressure sensor. The
ecm supplies the sensor
with a regulated 5 v reference–voltage and the sensor returns a signal voltage
betwee ...
Chassis
On–vehicle inspection
1. Inspect steering linkage
check the steering wheel freeplay .
check the steering linkage for looseness or damage.
Check that the tie rod ends do not have excessive play.
Check that the dust seals and boots are not damaged.
Chec ...
Inspection procedure
1 Check d squib circuit(airbag sensor assy center – horn button
assy)
Disconnect the negative (–) terminal cable from the battery,
and wait at least for 90 seconds.
disconnect the connectors between the airbag sensor
assy center and the horn button assy.
connect the ...