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:
Scratched / Reversed Disc
63-46 Scratched / Reversed Disc
DESCRIPTION
DTC No.
DTC Detection Condition
Trouble Area
63-46
Scratches or dirt is found on CD surface or CD is set
upside down.
CD
Radio and navigation assembly
INSPECTION PROCEDURE
H ...
Scratched / Reversed Disc
DTC 44-46 Scratched / Reversed Disc
DESCRIPTION
DTC No.
DTC Detecting Condition
Trouble Area
44-46
Scratches or dirt is found on DVD surface or DVD is set
upside down.
DVD
Television display assembly
INSPECTION PROCEDU ...
System Too Lean/ System Too Rich
DTC P0171 System Too Lean (Bank 1)
DTC P0172 System Too Rich (Bank 1)
DTC P0174 System Too Lean (Bank 2)
DTC P0175 System Too Rich (Bank 2)
DESCRIPTION
The fuel trim is related to the feedback compensation value, not to the basic
injection time. The fuel trim
consists of both the short-term ...