Toyota RAV4 manuals

Toyota RAV4 Service Manual: Fail-safe chart

  1. Fail-safe chart

This function minimizes the loss of the ect functions when a malfunction occurs in a sensor or solenoid.

  1. Automatic transmission fluid (atf) temperature sensor: when the atf temperature sensor has a malfunction, o/d up-shift is prohibited
  2. Counter gear speed sensor nc (speed sensor nc): when the counter gear speed sensor has a malfunction, o/d up-shift is prohibited.
  3. 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.

  4. 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.

Toyota RAV4. Fail-safe chart


Hint:

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:

Check for short circuit
If the wire harness is ground shorted (fig. 5), Locate the section by conducting a resistance check with the body ground (below). Check the resistance with the body ground. Disconnect connectors a and c, and measure the resistance Standard resistance (fig. 6) Hint: Measure ...

Yaw rate sensor 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 system ...

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 troubleshooting is one way to save time. Notice: In the table below, the values listed under "no ...

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