Toyota Tacoma (2015-2018) Service Manual: AUTO LSD Indicator Light Remains ON
DESCRIPTION
During normal mode, pressing the VSC OFF switch for a short amount of time changes vehicle to AUTO LSD mode.
WIRING DIAGRAM
.png)
CAUTION / NOTICE / HINT
NOTICE:
- When replacing the skid control ECU (master cylinder solenoid), perform
calibration (See page
.gif)
). - Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
|
1. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Select CAN Bus Check from the System Selection Menu screen and follow the
prompts on the screen to inspect the CAN bus (See page
).
OK:
CAN Bus Check indicates no malfunctions in CAN communication.
| NG | .gif) |
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
.gif)
|
2. |
INSPECT SKID CONTROL ECU (CSW TERMINAL) |
(a) Disconnect the S1 skid control ECU (master cylinder solenoid) connector.
|
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
.png)
(c) Reconnect the S1 skid control ECU (master cylinder solenoid) connector.
| NG | |
GO TO STEP 4 |
|
|
3. |
READ VALUE USING TECHSTREAM (AUTO LSD INDICATOR LIGHT) |
(a) Turn the ignition switch off.
(b) Connect the Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the Techstream on.
(e) Enter the following menus: Chassis / ABS/VSC/TRAC / Data List.
(f) According to the display on the Techstream, read the Data List.
ABS/VSC/TRAC|
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Auto LSD Indicator Light |
Auto LSD indicator light/ ON or OFF |
Indicator light OFF/ON |
ON: Indicator light on OFF: Indicator light off |
(g) Check the Techstream display condition of the brake warning light.
Result|
Result |
Proceed to |
|---|---|
|
Display of the Data List remains OFF |
A |
|
Display of the Data List remains ON |
B |
| A | |
GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
| B | |
REPLACE MASTER CYLINDER SOLENOID |
|
4. |
INSPECT VSC OFF SWITCH |
| NG | |
REPLACE VSC OFF SWITCH |
|
|
5. |
INSPECT ROOF CONSOLE BOX ASSEMBLY |
| A | |
REPAIR OR REPLACE HARNESS OR CONNECTOR (MASTER CYLINDER SOLENOID - ROOF CONSOLE BOX ASSEMBLY) |
| B | |
REPLACE ROOF CONSOLE BOX ASSEMBLY |
| C | |
REPLACE ROOF CONSOLE BOX ASSEMBLY |
AUTO LSD Indicator Light does not Come ON
DESCRIPTION
The AUTO LSD does not operate even if the VSC OFF switch is pressed under the
following conditions:
The brake system is faulty.
The temperature inside the hydraulic brake bo ...
Slip Indicator Light does not Come ON
DESCRIPTION
Refer to Slip Indicator Light Remains ON (See page
).
WIRING DIAGRAM
Refer to Slip Indicator Light Remains ON (See page
).
CAUTION / NOTICE / HINT
NOTICE:
When replacing ...
Other materials:
Driver Side Door Entry Lock Function does not Operate
DESCRIPTION
If the entry lock function does not operate for the driver door only, but the
entry unlock function operates, the request code is being transmitted properly from
the driver door. In this case, there may be a problem related to the front door
outside handle assembly LH (lock sensor ...
Front Camera Module Incorrect Axial Gap (C1AA8)
DESCRIPTION
If the millimeter wave radar sensor assembly detects that the beam axis of the
forward recognition camera is misaligned, it will store DTC C1AA8.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
C1AA8
...
Washer Level Warning Switch
Components
COMPONENTS
ILLUSTRATION
Inspection
INSPECTION
PROCEDURE
1. INSPECT LEVEL WARNING SWITCH ASSEMBLY
HINT:
This check should be performed with the windshield washer motor and pump assembly
installed on the washer jar.
(a) Fill the washer jar with washer fluid.
(b) ...
