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:
Removal
1. REMOVE INSTRUMENT CLUSTER CENTER NO. 1 FINISH PANEL
2. REMOVE INSTRUMENT CLUSTER CENTER NO. 2 FINISH PANEL
3. REMOVE INSTRUMENT CLUSTER FINISH PANEL GARNISH
4. REMOVE RADIO RECEIVER
Remove the 4 screws.
Disconnect the connectors and remove the radio
receiver with bracke ...
Cooling system
On-vehicle inspection
1. INSPECT FOR COOLANT LEAK
CAUTION:
Do not remove the radiator cap while the engine and
radiator are still hot. Pressurized, hot engine coolant
and steam may be released and cause serious
burns.
NOTICE:
Before performing each inspection, turn the A/ ...
Power back door main switch
INSPECTION
1. INSPECT POWER BACK DOOR MAIN SWITCH
Inspect the resistance of the main switch.
Resistance
If the result is not as specified, replace the switch.
Apply battery voltage and check the illuminates.
OK
HINT:
Whether the switch illuminates or not will not affect
th ...
