Toyota Corolla (E120): Camshaft position ”a” actuator circuit

Problem symptoms table

Circuit description

Other materials:

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 ...

Engine
On–vehicle inspection Hint: inspect these items on a cooled down engine. 1. Inspect drive belt 2. Replace spark plugs 3. Inspect air filter Remove the air filter.  visually check that the air filter is not excessively damaged, dirty or oily. Peplace the air filter if nece ...

Replacement
1. Remove proportioning valve assy Using sst, disconnect the 5 brake tubes from the proportioning valve assy. Sst 09023–00100 Remove the 2 bolts and proportioning valve assy from the body. 2. Install proportioning valve assy Install the proportioning valve assy w ...