Toyota Sienna Service Manual: Initialization
1. RESET SLIDING ROOF MOTOR
- If the AUTO operation function does not operate, reset the sliding roof motor using any of the following methods.
- Press the sliding roof switch on the TILT UP side
and hold it until the sliding roof motor stops.
Then release the switch and leave it untouched for 10 seconds or more.
- Press the sliding roof switch on the TILT UP side again for 10 seconds or more and hold it until the sliding roof stops at the fully open and up position.
- Release the switch, press it again within 5 seconds and hold it until a series of movements indicated below has done: Fully closing → Fully opening → Fully closing
HINT: If the battery terminal is disconnected or after the jam protection function has operated, the sliding roof ECU may not detect a position of the roof glass. If the AUTO operation function is still disabled even if the sliding roof motor has been reset, the Hall IC (built in the sliding roof motor assembly) for detecting the roof glass position may be malfunctioning.
Sliding roof system
PARTS LOCATION
...
Problem symptoms table
SLIDING ROOF SYSTEM
Symptom
Suspected area
AUTO function does not operate
Sliding roof motor assembly
Sliding roof system does not operate
ECU-IG fu ...
Other materials:
When stopping the engine with the shift lever in a position other
than P
If the engine is stopped with the shift lever in a position other than P,
the engine switch will not be turned off but instead be turned to
ACCESSORY mode. Perform the following procedure to turn the
switch off:
Check that the parking brake is set.
Shift the shift lever to P.
Check that t ...
Terminals of ECU
1. CHECK INSTRUMENT PANEL J/B ASSEMBLY
(MULTIPLEX NETWORK BODY ECU)
Disconnect the B6, B7 and B9 ECU connectors.
Disconnect the 1A, 1C, 1L and 1K J/B connectors.
Measure the voltage and resistance between each
terminal of the wire harness side connectors and
body gro ...
On-vehicle inspection
1. INSPECT BACK WINDOW (DEFOGGER WIRE)
NOTICE:
When cleaning the glass, wipe the glass along the
wire using a soft and dry cloth. Take care not to
damage the wires.
Do not use detergents or glass cleaners including
abrasive ingredients.
When measuring voltage, wr ...
