Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 05 eg cip0335
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DI-65
DIAGNOSTICS - ENGINE
DI227-04
DTC P0335 Crankshaft Position Sensor "A" Circuit
Malfunction
CIRCUIT DESCRIPTION
Crankshaft position sensor (NE signal) consists of a signal plate and pickup coil.
The NE signal plate has 34 teeth and is mounted on the crankshaft. The NE signal sensor generates 34
signals for every engine revolution. The ECM detects the standard crankshaft angle based on the G22 sig-
nals, and the actual crankshaft angle and the engine speed by the NE signals.
DTC No. DTC Detecting Condition Trouble Area
No crankshaft position sensor signal to ECM during cranking S Open or short in crankshaft position sensor circuit
(2 trip detection logic) S Crankshaft position sensor
osition
P0335
No crankshaft position sensor signal to ECM with engine S Starter
speed 600 rpm or more (2 trip detection logic) S ECM
WIRING DIAGRAM
ECM
Right Bank VVT Sensor (Camshaft Position Sensor)
10
1 B VVT1+
E12
W
D
2
Crankshaft Position Sensor G 16
1 B-W NE+
E11
A J12
24
L G A W NE-
D E11
2 A
A E2
Left Bank VVT Sensor (Camshaft Position Sensor)
22
1 G O VVT2+
E12
W
D
2
E2
A11084
INSPECTION PROCEDURE
HINT:
S Perform troubleshooting of DTC P0335 first. If no trouble is found, troubleshoot the following mechani-
cal systems.
S Read freeze frame data using TOYOTA hand-held tester or OBD II scan tool. because freeze frame
records the engine conditions when the malfunction is detected, when troubleshooting it is useful for
determining whether the vehicle was running or stopped, the engine warmed up or not, the air-fuel
ratio lean or rich, etc. at the time of the malfunction.
2001 SIENNA (RM787U)
Author : Date : 219
DI-66
DIAGNOSTICS - ENGINE
1 Check resistance of crankshaft position sensor (See page IG-1 ).
Reference INSPECTION USING OSCILLOSCOPE
VV1, VV2 and NE Signal Waveforms
2V During cranking or idling, check between terminals G22+ and
/Division NE-, NE and NE- of the ECM connector.
VV1 GND
HINT:
VV2 GND The correct waveforms are as shown.
NE GND
20 msec./Division (Idling) A11663 NG Replace crankshaft position sensor.
OK
2 Check for open and short in harness and connector between ECM and
crankshaft position sensor (See page IN-31 ).
NG Repair or replace harness or connector.
OK
3 Inspect sensor installation and teeth of crankshaft timing pulley.
NG Tighten the sensor.
Replace crankshaft timing pulley.
OK
Check and replace ECM
(See page IN-31 ).
2001 SIENNA (RM787U)
Author : Date : 220
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