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:
Diagnostic trouble code chart
1. DTC CHECK
If a malfunction code is displayed during the DTC check ,
check the suspected area listed for that code in the table
below, and proceed to the appropriate page.
DIAGNOSTIC TROUBLE CODE CHART
DTC No.
Detection Item
Suspect Area
B1244
Light Se ...
Torque Converter Clutch Solenoid Circuit
DESCRIPTION
The shift solenoid valve DSL is turned "ON" and "OFF" by signals from the ECM
in order to control the
hydraulic pressure operation, the lock-up relay valve, which then controls
operation of the lock-up clutch.
MONITOR DESCRIPTION
Torque converter lock-up i ...
CD Abnormal/ Excess Current/ Tray Insertion / Ejection Error
DTC 63-44 CD Abnormal
DTC 63-48 Excess Current
DTC 63-50 Tray Insertion / Ejection Error
DESCRIPTION
DTC No.
DTC Detection Condition
Trouble Area
63-44
Operation error in the CD mechanism
Radio and navigation assembly
63-48
Excess current is pr ...
