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:

Removal
HINT: Remove the RH side by the same procedure as the LH side. 1. REMOVE REAR WHEEL 2. REMOVE QUARTER TRIM PANEL ASSEMBLY FRONT LH HINT: Remove the LH side by the same procedure as the RH side (See page IR-9). 3. REMOVE REAR SPEED SENSOR (a) Disconnect the speed sensor connector, and pu ...

Rear ceiling lights
Turns the lights on/off When the personal/interior light main switch is in the off position, the rear ceiling lights will not turn on even if the switch is on. Adjusting the rear personal/interior lights angle (if equipped) Push the edge of the light lens. Illuminated entry system ...

Inspection
1. INSPECT SHOCK ABSORBER ASSEMBLY REAR LH (a) Push down and pull up the shock absorber rod, and check that there is no unusual resistance or unusual operation sound. If there is any malfunction, replace the shock absorber with a new one. NOTICE: When disposing of the shock absorber, se ...