Toyota Corolla (E120) 2002–2008 Repair Manual / Diagnostics / Sfi system / Crankshaft position sensor ”a”
circuit / Circuit description
Toyota Corolla (E120): Circuit description
The crankshaft position sensor (ne signal) consists of a magnet, iron core and pickup coil.
The ne signal plate (crankshaft position sensor plate) has 34 teeth and is installed on the crankshaft. The ne signal sensor generates 34 signals for each engine revolution. This sensor monitors a plate (timing rotor) located on the crankshaft timing pulley and is used by the ecm to detect crankshaft angle and engine speed (rpm/ne). As the crankshaft timing pulley rotates through an engine revolution, this sensor communicates the rotation of the ne signal plate as a pulse signal to the ecm. Based on the signal, the ecm controls fuel injection time and ignition timing.


Reference: inspection using the oscilloscope.
Hint
: the correct waveform is as shown on the left.

Monitor description
If there is no signal from the crankshaft sensor despite the engine revolving, the ecm interprets this as a malfunction of the sensor.
Monitor strategy

Typical enabling conditions

Typical malfunction thresholds

Wiring diagram

Other materials:
Listening to an iPod
Connecting an iPod enables you to enjoy music from the vehicle speakers.
Select “iPod” on the audio source selection screen.
When the iPod connected to the system includes iPod video, the system can only
output the sound by selecting the browse screen.
Connecting an iPod
Audio control scre ...
Blind Spot Monitor operation
■ Objects that can be detected while driving
The Blind Spot Monitor uses rear side radar sensors to detect the following
vehicles traveling in adjacent lanes and advises the driver of
the presence of such vehicles via the indicators on the outside rear
view mirrors.
Vehicles that are traveling ...
Initialization
1. Reset memory
Caution:
perform the reset memory (at initialization) when replacing the automatic
transaxle assy, engine
assy or ecm.
Notice:
hand–held tester only
Turn the ignition switch off.
connect the hand–held tester to the dlc3.
turn the ignition switch to th ...


