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:

Data list / active test
1. READ DATA LIST HINT: Using the DATA LIST displayed on the intelligent tester, you can read the value of the switch, sensor, actuator, etc. without parts removal. Reading the DATA LIST as the first step in troubleshooting is one way to shorten the labor time.  Connect the intelligen ...

Inspection
1. INSPECT OIL PUMP RELIEF VALVE (a) Coat the relief valve with engine oil and check that it falls smoothly into the valve hole under its own weight. If the valve does not fall smoothly, replace the relief valve. If necessary, replace the oil pump assembly. 2. INSPECT OIL PUMP ROTOR SET ...

Stowing the flat tire
Take out the strap and tire bag. Place tire standing up in rear tub, after putting the tire in the tire bag. Clip clasp to outboard hook. Clip other clasp to center or opposite hook location. Pull strap to tighten and secure tire. ...