Toyota Tacoma (2015-2018) Service Manual: 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 skid control ECU (master cylinder solenoid), perform
calibration (See page
).
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
|
1. |
CHECK CAN COMMUNICATION SYSTEM |
| NG | .gif) |
GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (ATRC TERMINAL) |
| NG | |
GO TO STEP 4 |
|
|
3. |
READ VALUE USING TECHSTREAM (A-TRC(TRAC) SWITCH) |
| OK | |
GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) |
| NG | |
REPLACE MASTER CYLINDER SOLENOID |
|
4. |
INSPECT A-TRAC SWITCH |
| NG | |
REPLACE A-TRAC 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 |
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 ...
A-TRAC Indicator Light Remains ON
DESCRIPTION
This is the A-TRAC main switch circuit. When the A-TRAC switch is turned on with
the transfer in L4, the A-TRAC function is available and the A-TRAC indicator light
illuminates.
WIRI ...
Other materials:
Immobiliser System does not Operate Properly
DESCRIPTION
The engine immobiliser system compares the ID code that is registered in the
certification ECU (smart key ECU assembly) with the ID code of the transponder chip
that is embedded in the electrical key transmitter sub-assembly.
WIRING DIAGRAM
(See page ).
CAUTION / NOTICE / HINT
...
Dtc Check / Clear
DTC CHECK / CLEAR
CHECK 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: Chassis / Front Recognition Camera / Trouble Codes.
(e) Check for details of the DTCs.
Click here
CLEAR DTC
(a) Connect the Te ...
Disposal
DISPOSAL
CAUTION / NOTICE / HINT
CAUTION:
Before performing pre-disposal deployment of any SRS part, review and closely
follow all applicable environmental and hazardous material regulations. Predisposal
deployment may be considered hazardous material treatment.
PROCEDURE
1. PRECAUTION
...
