Toyota Sienna Service Manual: Shift Solenoid "E" Control Circuit
DESCRIPTION
Shifting from 1st to 5th is performed in combination with "ON" and "OFF"
operation of the shift solenoid
valves SL1, SL2, SL3, S4 and SR which are controlled by the ECM. If an open or
short circuit occurs in
either of the shift solenoid valves, the ECM controls the remaining normal shift
solenoid valves to allow
the vehicle to be operated smoothly (Fail safe function).
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves "ON/OFF". When there is an open or short circuit in any shift solenoid valve circuit, the ECM detects the problem and illuminates the MIL and stores the DTC. And the ECM performs the fail-safe function and turns the other normal shift solenoid valves "ON/OFF" (In case of an open or short circuit, the ECM stops sending current to the circuit.) (See page AX-30).
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
COMPONENT OPERATING RANGE
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT TRANSMISSION WIRE (SR)
(a) Disconnect the transmission wire connector from the transaxle.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance
2 CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)
(a) Connect the transmission wire connector to the transaxle.
(b) Disconnect the connector from the ECM.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance
REPLACE ECM
3 INSPECT SHIFT SOLENOID VALVE SR
(a) Remove the shift solenoid valve SR.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance
(c) Connect the positive (+) lead to the terminal of the solenoid connector, and the negative (-) lead to the solenoid body.
OK: The solenoid makes an operating sound.
REPAIR OR REPLACE TRANSMISSION WIRE
Shift Solenoid "D" Control Circuit
DESCRIPTION
Shifting from 1st to 5th is performed in combination with "ON" and "OFF"
operation of the shift solenoid
valves SL1, SL2, SL3, S4 and SR which are controlled by ...
Pressure Control Solenoid "D" Performance (Shift
Solenoid Valve SLT)
SYSTEM DESCRIPTION
The linear solenoid valve (SLT) controls the transmission line pressure for
smooth transmission operation
based on signals from the throttle position sensor and the vehicle spee ...
Other materials:
Dtc check / clear
1. DTC CHECK/CLEAR (WHEN USING INTELLIGENT TESTER):
(a) DTC check
(1) Connect the intelligent tester to the DLC3.
(2) Turn the ignition switch to the ON position.
(3) Read the DTCs following the prompts on the
tester screen.
(b) DTC clear
(1) Connect the intelligent tester to the DLC3 ...
Wireless remote control/
electronic key battery
Replace the battery with a new one if it is depleted.
You will need the following items:
Flathead screwdriver
Lithium battery CR2032
Replacing the battery
Vehicles without a smart key system
Remove the cover using a coin
protected with tape etc.
Remove the deplete ...
Purpose of readiness tests
The On-Board Diagnostic (OBD II) system is
designed to monitor the performance of emissionrelated
components, and indicate any detected
abnormalities with DTCs (Diagnostic Trouble Codes).
Since various components need to be monitored in
different driving conditions, the OBD II system ...