Toyota Sienna Service Manual: Electronic circuit inspection procedure

General information

A large number of ECU controlled systems are used in the SIENNA. In general, ECU controlled systems are considered to be very intricate, requiring a high level of technical knowledge to troubleshoo ...

Basic inspection

(a) WHEN MEASURING RESISTANCE OF ELECTRONIC PARTS (1) Unless otherwise stated, all resistance measurements should be made at an ambient temperature of 20°C (68°F). Resistance measurements may b ...

Other materials:

Sensor detection display, obstacle distance
Distance display Sensors that detect an obstacle will illuminate continuously or blink. *1: The images may differ from that shown in the illustrations. *2: Multi-information display *3: Audio system screen Buzzer operation and distance to an obstacle A buzzer sounds when the sensors are o ...

Power slide door touch sensor
INSPECTION 1. INSPECT POWER SLIDE DOOR TOUCH SENSOR LH Check the resistance of the sensor. Resistance If the result is not as specified, replace the sensor. 2. INSPECT POWER SLIDE DOOR TOUCH SENSOR RH Check the resistance of the sensor. Resistance If the result is not a ...

Inspection
1. INSPECT OIL PUMP ASSEMBLY (a) Turn the drive gear with the 2 screwdrivers and make sure that it rotates smoothly. NOTICE: Be careful not to damage the oil seal lip. 2. INSPECT CLEARANCE OF OIL PUMP ASSEMBLY (a) Push the driven gear to one side of the body. (b) Using ...