Toyota Venza: Parking Brake Switch Circuit
DESCRIPTION
The main body ECU (driver side junction block assembly) detects the condition of the parking brake switch.
WIRING DIAGRAM
PROCEDURE
|
1. |
READ VALUE USING TECHSTREAM |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the display on the Techstream.
Main Body|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Parking Brake SW |
Parking brake SW signal/ON or OFF |
ON: Parking brake switch on OFF: Parking brake switch off |
- |
OK:
Normal conditions listed above are displayed.
| OK | .gif) |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
|
.gif)
|
2. |
INSPECT PARKING BRAKE SWITCH ASSEMBLY |
|
(a) Remove the parking brake switch assembly (See page
|
|
.gif)
).
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - Switch body |
Shaft pushed in (OFF) |
10 kΩ or higher |
|
1 - Switch body |
Shaft not pushed in (ON) |
Below 1 Ω |
| NG | |
REPLACE PARKING BRAKE SWITCH ASSEMBLY |
|
|
3. |
CHECK HARNESS AND CONNECTOR (SWITCH - MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)) |
|
(a) Disconnect the 2C main body ECU (driver side junction block assembly) connector. |
|
(b) Disconnect the L15 parking brake switch assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
2C-7 - L15-1 |
Always |
Below 1 Ω |
|
2C-7 - Body ground |
Always |
10 kΩ or higher |
|
*1 |
Front view of wire harness connector: (to Main Body ECU (Driver Side Junction Block Assembly)) |
|
*2 |
Front view of wire harness connector (to Parking Brake Switch Assembly) |
| OK | |
REPLACE MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Door Mirror Foot Light Circuit
DESCRIPTION
The main body ECU (driver side junction block assembly) controls the door mirror
foot lights.
WIRING DIAGRAM
1. w/o Seat Position Memory:
2. w/ Seat Position Memory:
PROCEDURE
...
Taillight Relay Circuit
DESCRIPTION
The main body ECU (driver side junction block assembly) controls the operation
of the TAIL relay.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits rel ...
Other materials about Toyota Venza:
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
NOTICE:
Turn the ignition switch off before removing any parts.
HINT:
If no malfunction is found when inspecting parts, inspect the skid control
ECU and ground points for poor connections.
If a trouble code is ...
Rear window defogger
Clear the rear window using the defogger.
On/off
The defogger will automatically turn off after 15 or 60 minutes.
This operation time changes according to the ambient temperature and vehicle
speed.
Pressing the switch again also turns the defogger off. ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT OUTER MIRROR SWITCH ASSEMBLY (w/o Memory)
(a) The L position of the left/right adjustment switch: Measure the resistance
according to the value(s) in the table below.
Standard Resistance (for Left Side):
Tes ...
0.177