Toyota Sienna Service Manual: Terminals of ECU
1. INSTRUMENT PANEL JUNCTION BLOCK (MULTIPLEX NETWORK BODY ECU)
- Disconnect the B6, B7 and B9 ECU connectors.
- Disconnect the 1A, 1C, 1K, 1L and 1P J/B connectors.
- Check the voltage or resistance according to the value(s) in the table below (wire harness side connector).
HINT: If the result is not as specified, there may be a malfunction on the wire harness side.
- Reconnect the B6, B7 and B9 ECU connectors.
- Reconnect the 1A, 1C, 1K, 1L and 1P J/B connectors.
- Check the voltage according to the value(s) in the table below (ECU side connector).
If the result is not as specified, the instrument panel J/B (multiplex network body ECU) may have a malfunction.
Problem symptoms table
HINT:
Inspect the fuse and relay before investigating the suspected
areas shown in the table below.
WIRELESS DOOR LOCK CONTROL SYSTEM:
...
Diagnosis system
1. DESCRIPTION
When troubleshooting a vehicle with the diagnosis
system, the only difference from the usual
troubleshooting procedure is connecting the intelligent
tester to the vehicle and readin ...
Other materials:
Evaporator temperature sensor (for rear air conditioning system)
ON-VEHICLE INSPECTION
1. INSPECT REAR A/C EVAPORATOR TEMPERATURE SENSOR
(a) Remove the rear evaporator temperature sensor.
(b) Disconnect the connector from the rear evaporator
temperature sensor.
(c) Measure the resistance according to the value(s) in
the table below.
Standard re ...
Inspection
1. INSPECT GARAGE DOOR OPENER
Press the switch and check that each red LED turns
on. If one or more of the switches does not turn on
the LED, confirm normal operation of the fuse and
wire harness, then replace the garage door opener.
2. INSPECT GARAGE DOOR OPENER REGISTRATION ...
Removal
1. REMOVE REAR WHEEL
2. REMOVE TAIL EXHAUST PIPE ASSEMBLY (See page
EX-8)
3. SEPARATE REAR SPEED SENSOR
(a) Remove the bolt and the speed sensor from the
axle carrier.
NOTICE:
Be careful not to damage the speed sensor
Prevent foreign matter from adhering to the
speed sensor.
4. REMO ...
