Toyota Sienna Service Manual: Fail-safe chart
1. FAIL-SAFE
This function minimizes the loss of the ECT functions when any malfunction occurs in a sensor or solenoid.
(a) ATF (Automatic Transmission Fluid) temperature sensor: When the ATF temperature sensor has a malfunction, 5th upshift is prohibited.
(b) Counter gear speed sensor NC (Speed sensor NC): When the counter gear speed sensor has a malfunction, 5th upshift is prohibited.
(c) Shift solenoid valve DSL: When the solenoid valve DSL has a malfunction, the current to the solenoid valve is stopped.
This stops lock-up control, then fuel economy decreases.
(d) Shift solenoid valve SL1, SL2, SL3 and S4: Fail safe function: If either of the shift solenoid valve circuits develops an open or short, the ECM turns the other shift solenoid "ON" and "OFF" in order to shift into the gear positions shown in the table below.
Manual shifting as shown in the following table must be done (In case of a short circuit, the ECM stops sending the current to the short circuited solenoid).
Even if starting the engine in the fail-safe mode, the gear position remains in the same position.
HINT: FL: Flex Lock-up
Dtc clear
(A) when using the obd ii scan tool or intelligent
tester: clearing the dtcs.
(1) Connect the intelligent tester together with the
CAN VIM (controller area network vehicle
interface module) to the ...
Data list / active test
1. DATA LIST
HINT:
Using the intelligent tester to read the DATA LIST allows
the values or states of switches, sensors, actuators and
other items to be read without removing any parts. This
non-i ...
Other materials:
Overview
Button in the vehicle
Park assistance button
Ultrasound sensors
Ultrasound sensors of the PDC,
for instance in the bumpers.
Functional requirements
Ensure full functionality:
Do not cover sensors, for instance with stickers,
bicycle racks.
Keep the sensors clean and unobstructed.
Switching on/ ...
Fuel Pump Primary Circuit
DTC P0230 Fuel Pump Primary Circuit
DESCRIPTION
This DTC is designed to detect a malfunction in the fuel pump
(FUEL PUMP) relay circuit. When the
system is normal, the battery voltage is applied to FPR terminal of the ECM
while the FUEL PUMP
relay is turned OFF. If the battery v ...
Start/Stop button
Concept
Pressing the Start/Stop button
switches drive-ready state on or
off.
Steptronic transmission: the
drive-ready state is switched on
when you depress the brake pedal while pressing
the Start/Stop button.
Pressing the Start/Stop button again switches
drive-ready state back off and standby sta ...
