Toyota RAV4 (XA40) 2013-2018 Service Manual: Fail-safe chart
- Fail-safe chart
This function minimizes the loss of the ect functions when a malfunction occurs in a sensor or solenoid.
- Automatic transmission fluid (atf) temperature sensor: when the atf temperature sensor has a malfunction, o/d up-shift is prohibited
- Counter gear speed sensor nc (speed sensor nc): when the counter gear speed sensor has a malfunction, o/d up-shift is prohibited.
- 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.
- Shift solenoid valve sl1, sl2 and s4:
if any 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:
- ?
: Condition in the normal
operation is shown above the
. - ?
: Condition in the
fail-safe mode is shown beneath the
. - E/b: engine brake.
Check mode procedure
Description
Check mode has a higher sensitivity to malfunctions
and can detect malfunctions that normal mode
cannot detect. Check mode can also detect all the
malfunctions that normal m ...
Data list / active test
Read data list
Hint:
Using the intelligent tester's data list allows switch,
sensor, actuator, and other item values to be read
without removing any parts. Reading the data list
early in tro ...
Other materials:
Main body ecu communication stop mode
Description
Wiring diagram
Inspection procedure
Notice:
Turn the ignition switch off before measuring the resistances of the
main wire and the branch
wire.
After the ignition switch is turned off, check that the key reminder
warning system and light
reminder warning syste ...
Registering ID codes
(vehicles with tire pressure
warning system)
Every tire pressure warning
valve and transmitter has a
unique ID code. When replacing
a tire pressure warning valve
and transmitter, it is necessary
to register the ID code.
When registering the ID codes,
perform the following procedure.
â– Registering procedure (with
7-inch display)
1. Park the ...
Front occupant classification sensor rh collision detection
Description
Dtc b1786 is output when the occupant classification ecu receives a collision
detection signal sent by
the front occupant classification sensor rh when an accident occurs.
Dtc b1786 is also output when the front seat assembly rh is subjected to a
strong impact, even if an
a ...
