Toyota Sienna Service Manual: Power Window can be Operated After Ignition Switch is Turned OFF Even if Operative Conditions are not Met
DESCRIPTION
The multiplex network body ECU controls power supplied to the power window master switch and each regulator switch continuously for 45 seconds after the ignition switch is turned OFF unless the front doors have been opened, so that the power window can be operated during this period.
However, if either front door is opened or if a signal from any of the front door courtesy lamp switches is input to the ECU during 45 seconds, or if 45 seconds pass with nothing being done, the multiplex network body ECU will stop supplying power, thus disabling power window operation disabled.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK CHECK OPERATION FUNCTION AFTER IGNITION SWITCH IS TURNED OFF
- If the power window operates even after either front door is opened within 45 seconds after the ignition switch is turned OFF, proceed to A.
- If the power window operates even after 45 seconds have passed after the ignition switch is turned OFF, proceed to B.
2 READ VALUE OF INTELLIGENT TESTER
- Using the intelligent tester, check that the data list for proper functioning of the front door courtesy switches.
Standard (Multiplex network body ECU)
|
Item |
Measurement Item/Display (Range) |
Normal Condition |
Diagnostic Note |
| D DOR CTY SW | Driver side door courtesy switch signal/ ON or OFF | ON: Driver side door is open OFF: Driver side door is closed |
- |
| P DOR CTY SW | Passenger side door courtesy switch signal/ ON or OFF | ON: Passenger side door is open OFF: Passenger side door is closed |
- |
3 INSPECT DOOR COURTESY SWITCH ASSEMBLY
- Remove the courtesy lamp switch.
- Check the switch resistance.
Standard resistance
4 CHECK WIRE HARNESS (FRONT DOOR COURTESY SWITCH - MULTIPLEX NETWORK BODY ECU)
- Disconnect the D7 or D8 lamp switch connector.
- Disconnect the B7 or B9 ECU connector.
- Check the resistance between the wire harness side connectors.
Standard resistance
REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY (MULTIPLEX NETWORK BODY ECU)
Power Windows do not Operate at All
DESCRIPTION
If all of the door windows do not operate, no power may be supplied to the
power window master switch or
the power window master switch itself may have a malfunction.
WIRING DIAGRAM
...
Auto Up Operation does not Fully Close Power Window (Jam
Protection Function is Activated)
DESCRIPTION
If AUTO UP operation does not fully close the power window, the following
conditions may be the cause.
The reset of the power window motor has not been completed,
resulting ...
Other materials:
Inspection
1. V
(a) Inspect VSV operation.
(1) Using an ohmmeter, measure the resistance
according to the value(s) in the table below.V
Standard resistance
If the result is not as specified, replace the
vsv.
(B) inspect the vsv for ground.
(1) Using an ohmmeter, measure the resistance
accordin ...
Inspection
1. INSPECT NO. 1 VALVE ROCKER ARM SUBASSEMBLY
(a) Turn the roller by hand to check that it turns
smoothly.
HINT:
If the roller does not turn smoothly, replace the valve
rocker arm sub-assembly.
2. INSPECT VALVE LASH ADJUSTER ASSEMBLY
NOTICE:
Keep the lash adjuster free of dirt ...
Front power seat lumbar switch
Inspection
1. INSPECT FRONT POWER SEAT LUMBAR SWITCH
Measure the resistance according to the value(s) in
the table below.
Standard resistance
If the result is not as specified, replace the switch. ...
