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G34776
G and NE+ Signal Waveforms
G
NE+
10 msec. / Division (Idling)
--
DIAGNOSTICS
ECD SYSTEM (1ND--TV)
05--107
COROLLA Supplement (RM1129E)
DTC
P0335
CRANKSHAFT POSITION SENSOR ”A”
CIRCUIT
CIRCUIT DESCRIPTION
The crankshaft position sensor system consists of a crankshaft position sensor plate and a pickup coil. The
sensor plate has 58 teeth and is installed on the crankshaft. The pickup coil is made of an iron core and mag-
net. The sensor plate rotates and as each tooth passes through the pickup coil, a pulse signal is created.
The pickup coil generates 58 signals per engine revolution. Based on these signals, the ECM calculates the
crankshaft position and engine speed. Using these calculations, the common rail system is controlled.
DTC No.
DTC Detection Condition
Trouble Area
P0335
No crankshaft position sensor signal to ECM while cranking
(The MIL is illuminated as well as a DTC being set immediately
malfunction is detected)
S
Open or short in crankshaft position sensor circuit
S
Crankshaft position sensor
S
Crankshaft position sensor plate
S
ECM
HINT:
DTC P0335 is detected when the engine cranks 8 revolutions or more.
Reference: Inspection using the oscilloscope.
HINT:
S
The correct waveform is as shown on the left.
S
G stands for the camshaft position sensor signal, and
NE+ stands for the crankshaft position sensor signal.
Item
Contents
Terminal
CH1: G -- EG
CH2: NE+ -- NE--
Equipment Setting
10ms/Division
Condition
While cranking or idling
05LG5--03
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TOYOTA COROLLA REPAIR MANUAL SUPP 1129E