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:
Eject Error/ Elevator Error/ Clamp Error
DTC 44-45 Eject Error
DTC 44-51 Elevator Error
DTC 44-52 Clamp Error
DESCRIPTION
DTC No.
DTC Detecting Condition
Trouble Area
44-45
Disc cannot be ejected.
Television display assembly
44-51
Mechanical error occurs during elevator operation.
...
Brake Switch "A" Circuit
DTC P0571 Brake Switch "A" Circuit
DESCRIPTION
When the brake pedal is depressed, the stop light switch sends a signal to
the ECM. When the ECM
receives this signal, it cancels the cruise control. The fail-safe function
operates to enable normal driving
even if there is a malfuncti ...
Short to B+ in CAN Bus Line
DESCRIPTION
A short to B+ is suspected in the CAN bus wire when the resistance between
terminals 6 (CANH) and 16
(BAT), or terminals 14 (CANL) and 16 (BAT) of the DLC3 is below 6 kΩ.
Symptom
Trouble Area
The resistance between terminals 6 (CANH) and 16 (BAT), or
...
