Toyota RM787U, Руководство по обслуживанию и ремонту

Страница: 660 / 1976

DI-122
- DIAGNOSTICS ENGINE
276
Author: Date:
2001 SIENNA (RM787U)
DTC P1346 VVT Sensor/Camshaft Position Sensor Cir-
cuit Range/Performance Problem (Bank 1)
DTC P1351 VVT Sensor/Camshaft Position Sensor Cir-
cuit Range/Performance Problem (Bank 2)
CIRCUIT DESCRIPTION
Refer to DTC P1345, P1350 on page DI-130 .
DTC No. DTC Detection Condition Trouble Area
P1346
Deviation in crankshaft position sensor signal and VVT sensor
(bank 1) signal (2 trip detection logic)
Mechanical system malfunction (Jumping teeth of timing belt,
b lt t t h d)
P1351
Deviation in crankshaft position sensor signal and VVT sensor
(bank 2) signal (2 trip detection logic)
belt stretched)
ECM
WIRING DIAGRAM
Refer to DTC P335 on page DI-65 .
INSPECTION PROCEDURE
HINT:
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 was warmed up or not, the air-fuel ratio was lean
or rich, etc. at the time of the malfunction.
1 Check valve timing (Check for loose and jumping teeth of timing belt) (See page
EM-16 ).
NG Adjust valve timing (Repair or replace timing
belt).
OK
Check and replace ECM (See page IN-31 ).
DI6TA-02