BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS VEHICLE STABILITY CONTROL SYSTEM VSC OFF Switch Circuit
DESCRIPTION
The skid control ECU (brake actuator assembly) is connected to the combination meter assembly via CAN communication.
Pressing the VSC OFF switch turns off TRC operation, and pressing and holding this switch turns off TRC and VSC operation. If TRC and VSC operations are turned off, the TRC OFF message will be displayed on the multi-information display and the VSC OFF indicator light will come on.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
-
When replacing the skid control ECU (brake actuator assembly), perform zero point calibration.
-
Click hereBrake>BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS>VEHICLE STABILITY CONTROL SYSTEM>CALIBRATION
PROCEDURE
Check if CAN communication system DTCs are output.
Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM>DIAGNOSIS SYSTEM
- Result:
Result Proceed to DTCs are not output. A DTCs are output. B
A
B
Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING
Check if the skid control ECU (brake actuator assembly) connector is securely connected.
- OK:
The connector is securely connected.
- Result:
Proceed to OK NG
OK
NG
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Select the Data List using the GTS.
- Chassis > ABS/VSC/TRC > Data List
-
Tester Display Measurement Item Range Normal Condition Diagnostic Note TRC/VSC Off Mode TRC/VSC off mode Normal, TRC OFF, VSC Expert Mode, VSC OFF Normal: Normal mode
TRC OFF: TRC off mode
VSC Expert Mode: VSC expert mode
VSC OFF: VSC off mode-
- Chassis > ABS/VSC/TRC > Data List
-
Tester Display TRC/VSC Off Mode - 50003 105 282
Check the indicator light and mode condition on the GTS changes according to VSC OFF switch operation.
- Standard:
Switch Operation Mode Condition Display Multi-information Display (TRC OFF Message) VSC OFF Indicator Light Not pressed Normal Not displayed Does not come on Pressing the VSC OFF switch TRC OFF Displayed Does not come on Pressing and holding the VSC OFF switch VSC OFF Displayed Comes on
- Result:
Result Proceed to Indicator light and mode condition display do not change. A Mode condition display is normal, but indicator light does not change. B Indicator light and mode condition display is normal. C
A
B
Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING
C
Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING
Select the Active Test on the GTS.
- Chassis > ABS/VSC/TRC > Active Test
-
Tester Display Measurement Item Control Range Diagnostic Note TRC(TRAC) OFF Indicator Light Multi-information display (TRC OFF message) Display (message) ON/OFF Can be observed on the combination meter assembly VSC OFF Indicator Light VSC OFF indicator light Indicator light ON/OFF Can be observed on the combination meter assembly
- Chassis > ABS/VSC/TRC > Active Test
-
Tester Display TRC(TRAC) OFF Indicator Light - 50004 105 78
- Chassis > ABS/VSC/TRC > Active Test
-
Tester Display VSC OFF Indicator Light - 50004 105 79
Check the multi-information display (TRC OFF message) and VSC OFF indicator light in the combination meter assembly turn on or off in accordance with GTS operation.
- OK:
The multi-information display (TRC OFF message) and VSC OFF indicator light turn on or off in accordance with GTS operation.
- Result:
Proceed to OK NG
OK
NG
| *a | Component without harness connected
(VSC OFF Switch) |
Turn the engine switch off.
Disconnect the E113 VSC OFF switch connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition 6 (+) - 3 (E) Switch pushed Below 1 Ω 6 (+) - 3 (E) Switch not pushed 10 kΩ or higher
- Result:
Proceed to OK NG
OK
NG
Disconnect the A64 skid control ECU (brake actuator assembly) connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition A64-30 (CSW) - E113-6 (+) Always Below 1 Ω A64-30 (CSW) or E113-6 (+) - Body ground Always 10 kΩ or higher E113-3 (E) - Body ground Always Below 1 Ω
- HINT:
-
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing parts.
- Result:
Proceed to OK NG
OK
NG
Turn the engine switch off.
Perform an Active Test of the combination meter assembly using the GTS.
Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM>DATA LIST / ACTIVE TEST
- Body Electrical > Combination Meter > Active Test
-
Tester Display Meter Display 1 - 50004 122 7
- Body Electrical > Combination Meter > Active Test
-
Tester Display Indicat. VSC OFF - 50004 122 94
Check the combination meter assembly.
- OK:
The multi-information display and VSC OFF indicator light turn on or off in accordance with GTS operation.
- HINT:
-
If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step before replacing parts.
- Result:
Proceed to OK NG
OK
NG
Click hereVehicle Interior>METER / GAUGE / DISPLAY>METER / GAUGE SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING