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:
Terminals of ECU
1. TELEVISION CAMERA ASSEMBLY
Disconnect the T10 camera connector
Measure the voltage and resistance of each
terminal of the wire harness side connector.
If the result is not as specified, there may be a
malfunction on the wire harness side.
Reconnect the T10 ...
Disassembly
1. INSPECT UNDERDRIVE PLANETARY GEAR
PRELOAD
HINT:
(See page AX-260)
2. REMOVE FRONT PLANETARY GEAR NUT
(a) Using SST, loosen the staked part of the lock nut.
SST 09930-00010 (09931-00010, 09931-00020),
09387-00050
(b) Place the underdrive planetary gear in a soft jaw
vise.
NOTIC ...
Inspection
1. INSPECT FRONT DRIVE SHAFT ASSEMBLY LH
(a) Check that there is no remarkable play in the radial
direction of the outboard joint.
(b) Check that the inboard joint slides smoothly in the
thrust direction.
(c) Check that there is no remarkable play in the radial
direction of the inboard ...
