VEHICLE STABILITY CONTROL SYSTEM TRC OFF Indicator Light does not Come ON
| DTC Code | DTC Name |
|---|---|
| TRC OFF Indicator Light does not Come ON |
DESCRIPTION
Refer to TRC OFF Indicator Light Remains ON.
WIRING DIAGRAM
Refer to TRC OFF Indicator Light Remains ON.
CAUTION / NOTICE / HINT
PROCEDURE
CHECK CAN COMMUNICATION SYSTEM
Check if CAN communication system DTCs are output.
for LHD with Central Gateway ECU:Click here
for RHD with Central Gateway ECU:Click hereClick here
for LHD without Central Gateway ECU:Click here
for RHD without Central Gateway ECU:Click here
Result
Proceed to
DTC is not output
DTC is output (for LHD with Central Gateway ECU)
DTC is output (for RHD with Central Gateway ECU)
DTC is output (for LHD without Central Gateway ECU)
DTC is output (for RHD without Central Gateway ECU)
CHECK HARNESS AND CONNECTOR (CSW TERMINAL)
Turn the ignition switch off.
Disconnect the A100 skid control ECU (brake actuator assembly) connector.
-
*a
Front view of wire harness connector
(to Skid Control ECU [Brake Actuator Assembly])
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Switch Condition
Specified Condition
A100-33 (CSW) - Body ground
VSC OFF switch (telltale light assembly) held on
Below 1 Ω
VSC OFF switch (telltale light assembly) off (Not pressed)
10 kΩ or higher
Result
Proceed to
OK
NG
NG INSPECT TELLTALE LIGHT ASSEMBLYClick here
READ VALUE USING GTS (TRC/VSC OFF MODE)
Reconnect the A100 skid control ECU (brake actuator assembly) connector.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Chassis / ABS/VSC/TRC / Data List.
According to the display on the GTS, read the Data List.
Chassis > ABS/VSC/TRC > Data List
Tester Display
Measurement Item
Range
Normal Condition
Diagnostic Note
TRC/VSC Off Mode
TRC/TRAC/VSC off mode
Normal, TRC OFF or VSC OFF
Normal: Normal mode
TRC OFF: TRC/TRAC off mode
VSC OFF: VSC off mode
-
Chassis > ABS/VSC/TRC > Data List
Tester Display
TRC/VSC Off Mode
Check that the mode display changes according to the VSC OFF switch (telltale light assembly) operation.
OK
Display changes according to the switch operation.
Result
Proceed to
OK
NG
INSPECT COMBINATION METER ASSEMBLY
for Segment Display Type:
Perform Active Test of the combination meter assembly using the GTS.
Body Electrical > Combination Meter > Active Test
Tester Display
VSC TRC Indicator
Check the combination meter assembly.
OK
The TRC/TRAC OFF indicator light turns on or off in accordance with the GTS.
for TFT Display Type:
Perform Active Test of the combination meter assembly using the GTS.
Body Electrical > Combination Meter > Active Test
Tester Display
Meter Display 1
Check the combination meter assembly.
OK
The multi-information display turns on or off in accordance with the GTS operation
Result
Proceed to
OK
NG
INSPECT TELLTALE LIGHT ASSEMBLY
Remove the VSC OFF switch (telltale light assembly).
Inspect the VSC OFF switch (telltale light assembly).
Result
Proceed to
OK
NG
CHECK HARNESS AND CONNECTOR (BRAKE ACTUATOR ASSEMBLY - TELLTALE LIGHT ASSEMBLY)
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
A100-33 (CSW) - G43-6 (+)
Always
Below 1 Ω
G43-13 (E) - Body ground
Always
Below 1 Ω
A100-33 (CSW) or G43-6 (+) - Body ground
Always
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR