Toyota 4Runner: A-TRAC Indicator Light does not Come ON
DESCRIPTION
The A-TRAC does not operate even if the A-TRAC switch is pressed under the following conditions:
- The TRAC or VSC system is faulty.
- The temperature inside the hydraulic brake booster increases and the A-TRAC operation is suspended.
WIRING DIAGRAM
Refer to A-TRAC Indicator Light Remains ON (See page
.gif)
).
CAUTION / NOTICE / HINT
NOTICE:
When replacing the master cylinder solenoid, perform calibration (See page
).
PROCEDURE
|
1. |
CHECK CAN COMMUNICATION LINE |
(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 TRACTION CONTROL SWITCH (A-TRAC SWITCH) |
| NG | |
REPLACE TRACTION CONTROL SWITCH (A-TRAC SWITCH) |
|
|
3. |
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - A-TRAC SWITCH) |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
READ VALUE USING TECHSTREAM (A-TRAC INDICATOR LIGHT) |
| OK | |
GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
| NG | |
REPLACE MASTER CYLINDER SOLENOID |
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 ...
TC and CG Terminal Circuit
DESCRIPTION
DTC output mode is set by connecting terminals TC and CG of the DLC3.
WIRING DIAGRAM
HINT:
When each warning light continues blinking, a ground short in the wiring of terminal
TC o ...
Other materials about Toyota 4Runner:
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK FOR DTC
(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 / Air Conditioner / Trouble Codes.
(e) Check for DTCs.
2. CLEAR DTC ...
System Description
SYSTEM DESCRIPTION
1. DESCRIPTION
(a) System description
In the KDSS (Kinetic Dynamic Suspension System), a cylinder is installed to each
of the front and rear stabilizer bars. The front and rear cylinder upper chambers
and the front and rear lower cham ...
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