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 ...
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How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use this procedure to troubleshoot the theft deterrent system.
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
...
Short in Driver Side Squib Circuit (B1800/51-B1803/51)
DESCRIPTION
The driver side squib circuit consists of the center airbag sensor assembly,
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