Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 1998-2003 Approved FSM 05 ax cip0750p
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DI-179
DIAGNOSTICS - AUTOMATIC TRANSAXLE
DI0CS-12
DTC P0750, P0755 Shift Solenoid A/B Malfunction
(Shift Solenoid Valve No.1/No.2)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor and crankshaft position sensor to detect the actual
gear position (1st, 2nd, 3rd or O/D gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
trouble of the shift solenoid valves, valve body or automatic transaxle (clutch, brake or gear etc.).
DTC No. DTC Detecting Condition Trouble Area
During normal driving, the gear required by the ECM does not S Shift solenoid valve No.1 and/or No.2 is stuck open or closed
P0750
match the actual gear S Valve body is blocked up or stuck
P0755
(2-trip detection logic) S Automatic transaxle (clutch, brake or gear etc.)
HINT:
Check the shift solenoid valve No.1 when DTC P0750 is output and check the shift solenoid valve No.2 when
DTC P0755 is output.
INSPECTION PROCEDURE
1 Check shift solenoid valve No.1 or No.2 operation.
PREPARATION:
(a) Remove the oil pan.
(b) Remove the shift solenoid valve No.1 or No.2.
CHECK:
(+) (a) Applying 490 kPa (5 kgf/cm2, 71 psi) of compressed air,
(-) check that the solenoid valve does not leak air.
(b) When battery positive voltage is supplied to the shift sole-
noid valve, check that the valve opens.
OK:
(+) (a) Solenoid valve does not leak air
(b) Solenoid valve opens.
(-)
Q30002
NG Replace the shift solenoid valve No.1 or No.2.
OK
2001 SIENNA (RM787U)
Author : Date : 333
DI-180
DIAGNOSTICS - AUTOMATIC TRANSAXLE
2 Check the valve body (See page DI-171 ).
NG Repair or replace valve body.
OK
Repair the transaxle (See page AX-25 ).
2001 SIENNA (RM787U)
Author : Date : 334
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