Toyota 2GR-FE Manual page 386

ES–230
DTC
DTC
DESCRIPTION
The crankshaft position (CKP) sensor system consists of a crankshaft position sensor plate and a
magnetic coil.
The sensor plate has 34 teeth and is installed on the crankshaft. The pickup coil is made of windings, an
iron core and magnet. The sensor plate rotates and as each tooth passes through the pickup coil, a pulse
signal is created. The pickup coil generates 34 signals for each engine revolution. Based on these
signals, the ECM calculates the crankshaft position and engine RPM. Using these calculations, the fuel
injection time and ignition time are controlled.
ES
DTC No.
P0335
P0339
Reference: Inspection using an oscilloscope.
HINT:
• The correct waveform is as shown.
• VV1+ and VV2+ stand for the VVT sensor signal, and NE+ stands for the CKP sensor signal.
Item
Terminals
Equipment Settings
Conditions
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
P0335 Crankshaft Position Sensor "A" Circuit
Crankshaft Position Sensor "A" Circuit Inter-
P0339
mittent
DTC Detection Condition
• No CKP sensor signal to ECM while cranking (1 trip
detection logic)
• No CKP sensor signal to ECM at engine speed of
600 rpm or more (1 trip detection logic)
Under conditions (a), (b) and (c), no CKP sensor signal
to ECM for 0.05 seconds or more
(1 trip detection logic):
(a) Engine speed 1,000 rpm or more
(b) Starter signal OFF
(c) 3 seconds or more have elapsed since starter signal
switched from ON to OFF
VV1, VV2 and NE Signal Waveforms
5 V/DIV.
NE
VV1
VV2
Content
VV1+ - VV1-
VV2+ - VV2-
NE+ - NE-
5 V/DIV,
20 ms./DIV.
Cranking or idling
• Open or short in CKP sensor circuit
• CKP sensor
• CKP sensor plate
• ECM
• Open or short in CKP sensor circuit
• CKP sensor
• CKP sensor plate
• ECM
GND
GND
GND
20 ms./DIV.
A107148E09
Trouble Area