Toyota Sienna Service Manual: Parking Brake Switch Circuit
DESCRIPTION
The Multiplex network body ECU receives parking brake switch signal.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT TESTER
- Connect the intelligent tester to DLC3.
- Turn the ignition switch ON and push the intelligent tester main switch ON.
- Select the items below in the DATA LIST, and read the displays on the intelligent tester.
BODY NO.1:
2 INSPECT PARKING BRAKE SWITCH ASSEMBLY
- Check that there is resistance between the terminal and the body ground when parking brake switch is operated.
Resistance:
ON (When shaft is pressed): No continuity:
10 kΩ or higher
OFF (When shaft is not pressed): Continuity:
Below 1 Ω
3 CHECK HARNESS AND CONNECTOR
- Disconnect the 1K connector from instrument panel junction block assembly
- Check the resistance between the terminal 1K-10 of the instrument panel junction block assembly connector side and body ground
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
Illumination Circuit
DESCRIPTION
The Multiplex network body ECU controls illumination light as shown in the
chart below.
Room light assembly (Interior light, luggage component light) and
courtesy light wit ...
Taillight Relay Circuit
DESCRIPTION
The Multiplex network body ECU controls TAIL relay when signal is received
from headlight dimmer
switch assembly.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 PERFORM ACTIVE TEST BY IN ...
Other materials:
Illumination Circuit
DESCRIPTION
The Multiplex network body ECU controls illumination light as shown in the
chart below.
Room light assembly (Interior light, luggage component light) and
courtesy light with DOOR position
Map light assembly (Personal light)
Transponder key amplifier (Ignition ke ...
Diagnostic trouble code chart
COMMUNICATION DIAGNOSIS:
SW:
SW WITH NAME:
SW CONVERTING:
COMMAND SW:
FRONT MONITOR:
DVD PLAYER:
TELEPHONE:
NAVI:
IN-DASH CD CHANGER:
GPS:
CAMERA UNIT:
...
Removal
1. REMOVE ENGINE ASSEMBLY WITH TRANSAXLE
HINT:
(See page EM-34)
2. REMOVE TRANSVERSE ENGINE ENGINE MOUNTING INSULATOR
(a) Remove the 3 nuts and transverse engine engine
mounting insulator.
3. REMOVE FRONT SUSPENSION ARM SUBASSEMBLY LOWER NO.1 LH
(a) Remove the 2 bolts on the front sid ...
