DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
PERFORM ACTIVE TEST USING GTS (DSS SIGNAL BUZZER)
CHECK TERMINAL VOLTAGE (IG1)
INSPECT SKID CONTROL BUZZER
CHECK HARNESS AND CONNECTOR (SKID CONTROL BUZZER - SKID CONTROL ECU)
VEHICLE STABILITY CONTROL SYSTEM - Skid Control Buzzer Circuit
DESCRIPTION
The skid control buzzer sounds upon receiving a signal from the skid control ECU (master cylinder solenoid).
WIRING DIAGRAM
INSPECTION PROCEDURE
After replacing the master cylinder solenoid, perform zero point calibration and store the system information ().
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
| 1.PERFORM ACTIVE TEST USING GTS (DSS SIGNAL BUZZER) |
Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Enter the following menus: Chassis / ABS/VSC/TRC / Active Test.
ABS/VSC/TRC| Tester Display | Test Part | Control Range | Diagnostic Note |
| DSS Signal Buzzer |
Skid control buzzer |
Buzzer ON/OFF |
The buzzer can be heard. |
Check that the skid control buzzer sounds/stops when turning the skid control buzzer on/off by using the GTS.
Result| Result | Proceed to |
| Buzzer does not sound or sounds constantly | A |
| Buzzer sounds/stops | B |
| | CHECK FOR INTERMITTENT PROBLEMS ()
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| 2.CHECK TERMINAL VOLTAGE (IG1) |
Turn the ignition switch off.
Disconnect the skid control buzzer assembly connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Switch Condition | Specified Condition |
| E5-2 (IG1) - Body ground | Ignition switch ON | 11 to 14 V |
Text in Illustration| *a | Front view of wire harness connector
(to Skid Control Buzzer Assembly) |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 3.INSPECT SKID CONTROL BUZZER |
Remove the skid control buzzer assembly ().
Apply battery voltage to the skid control buzzer, and check that the buzzer sounds.
- OK:
| Measurement Condition | Specified Condition |
| Battery positive (+) voltage - Terminal 2 (IG1) | Skid control buzzer sounds |
| Battery negative (-) voltage - Terminal 1 (BZ) |
Text in Illustration| *a | Component without harness connected
(Skid Control Buzzer Assembly) |
| | REPLACE SKID CONTROL BUZZER ASSEMBLY ()
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| 4.CHECK HARNESS AND CONNECTOR (SKID CONTROL BUZZER - SKID CONTROL ECU) |
Turn the ignition switch off.
Disconnect the A24 skid control ECU (master cylinder solenoid) connector.
Disconnect the E5 skid control buzzer assembly connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| A24-30 (BZ) - E5-1 (BZ) | Always | Below 1 Ω |
| A24-30 (BZ) - Body ground | Always | 10 kΩ or higher |
Result| Result | Proceed to |
| NG | A |
| OK (for LHD) | B |
| OK (for RHD) | C |
| | REPLACE MASTER CYLINDER SOLENOID ()
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| | REPLACE MASTER CYLINDER SOLENOID ()
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| A | |
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| REPAIR OR REPLACE HARNESS OR CONNECTOR |
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