Toyota RAV4 manuals

Toyota Sienna Service Manual: Fail-safe chart


  1. When communication fails in any of the main wires (communication lines) due to a short circuit or other causes, the fail-safe function, which is specified for each system, operates to prevent the system from malfunctioning.
  2. The table below shows the effects on each system when communication is impossible. For further details, refer to each system.



Diagnosis system
1. BUS CHECK Select "BUS CHECK" from the "OBD/MOBD MENU" screen. HINT: The ECUs and sensors that are properly connected to the CAN communication system can be displaye ...

Skid Control ECU Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area Skid Control ECU Communication Stop Mode "ABS/VSC/TRC" is not displayed on the " ...

Other materials:

Terminals of ecu
1. A/C AMPLIFIER HINT: Check from the rear of the connector while it is connected to the A/C amplifier. (a) Waveform 1: (b) Waveform 2: ...

Torque Converter Clutch Solenoid Circuit
DESCRIPTION The shift solenoid valve DSL is turned "ON" and "OFF" by signals from the ECM in order to control the hydraulic pressure operation, the lock-up relay valve, which then controls operation of the lock-up clutch. MONITOR DESCRIPTION Torque converter lock-up i ...

Emergency Stop Assistant
Concept If the driver is no longer fit to drive, the system helps to safely bring the vehicle to a standstill. General information The emergency stop function is not triggered automatically. The emergency stop function can only be triggered manually by the occupants. When the system is activated, t ...

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