Toyota Sienna Service Manual: Back-up Power Source Circuit
DESCRIPTION
This is the back-up power source for the A/C amplifier. Power is supplied even when the ignition switch is off and is used for diagnostic trouble code memory, etc.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT FUSE (ECU-B)
(a) Remove the ECU-B fuse from the engine room junction block.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance
2 CHECK HARNESS AND CONNECTOR (A/C AMPLIFIER - BATTERY)
(a) Disconnect the connector from the A/C amplifier.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
ACC Power Source Circuit
DESCRIPTION
This circuit supplies power to the A/C amplifier and the illumination for the
clock.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT FUSE (ECU ACC)
(a) Remove the ECU ACC fuse fr ...
Other materials:
Disc cannot be Played/ No Playable Files/ Copyright Protection Error
DTC 44-7D Disc cannot be Played
DTC 44-7E No Playable Files
DTC 44-7F Copyright Protection Error
DESCRIPTION
DTC No.
DTC Detecting Condition
Trouble Area
44-7D
An incompatible MP3/WMA file is used.
Although the file has an extension of ".mp3 ...
Precaution
1. NOTES FOR CLEARANCE SONAR SYSTEM
Under the following conditions, the sensor of the
clearance sonar may not operate properly:
Foreign matter such as snow or mud gets on the
sensor (the detection function will return to
normal when the foreign matter is no longer
prese ...
No Master/ Connection Check Error
DTC 01-D6 No Master
DTC 01-D7 Connection Check Error
DESCRIPTION
HINT:
*1: Even if no fault is present, this trouble code may be stored
depending on the battery condition or
engine start voltage.
*2: When 210 seconds have elapsed after disconnecting the power
supply ...
