DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
INSPECT IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED
INSPECT BATTERY
CHECK CAN COMMUNICATION LINE
CHECK DTC (CAN COMMUNICATION SYSTEM)
PERFORM ACTIVE TEST USING GTS (INDICAT. LAMP ABS)
CHECK HARNESS AND CONNECTOR (IG1 TERMINAL)
CHECK HARNESS AND CONNECTOR (GND1, GND2 AND GND3 TERMINAL)
VEHICLE STABILITY CONTROL SYSTEM - ABS Warning Light Remains ON
DESCRIPTION
If any of the following is detected, the ABS warning light remains on.
The skid control ECU (master cylinder solenoid) connectors are disconnected from the skid control ECU (master cylinder solenoid).
There is a malfunction in the skid control ECU (master cylinder solenoid) internal circuit.
There is an open in the harness between the combination meter and skid control ECU (master cylinder solenoid).
- There is a case that the GTS cannot be used when the skid control ECU (master cylinder solenoid) is abnormal.
WIRING DIAGRAM
INSPECTION PROCEDURE
- After replacing the master cylinder solenoid, perform zero point calibration and store the system information ().
| 1.INSPECT IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED |
Check the skid control ECU (master cylinder solenoid) connector connection.
- OK:
- The connector is securely connected.
| | CONNECT CONNECTOR TO ECU CORRECTLY |
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Check the battery voltage.
- Standard voltage:
- 11 to 14 V
Result| Result | Proceed to |
| OK | A |
| NG (for 1VD-FTV) | B |
| NG (for 1UR-FE) | C |
| NG (for 3UR-FE) | D |
| | GO TO CHARGING SYSTEM (ON-VEHICLE INSPECTION) ()
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| | GO TO CHARGING SYSTEM (ON-VEHICLE INSPECTION) ()
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| | GO TO CHARGING SYSTEM (ON-VEHICLE INSPECTION) ()
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| 3.CHECK CAN COMMUNICATION LINE |
Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON and the GTS on.
Select "CAN Bus Check" from the System Selection Menu screen, and follow the prompts on the screen to inspect the CAN Bus.
- OK:
- "CAN Bus Check" indicates no malfunctions in CAN communication.
Result| Result | Proceed to |
| OK | A |
| NG (for LHD) | B |
| NG (for RHD) | C |
| | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) ()
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| | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) ()
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| 4.CHECK DTC (CAN COMMUNICATION SYSTEM) |
Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON and the GTS on.
Check for DTCs (for LHD: , for RHD: ).
Result| Result | Proceed to |
| CAN system DTC is not output | A |
| CAN system DTC is output (for LHD) | B |
| CAN system DTC is output (for RHD) | C |
| | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) ()
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| | GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) ()
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| 5.PERFORM ACTIVE TEST USING GTS (INDICAT. LAMP ABS) |
Turn the ignition switch off.
Connect the GTS to the DLC3.
Turn the ignition switch to ON and the GTS on.
Enter the following menus: Body Electrical / Combination Meter / Active Test.
Check the condition of the ABS warning light by operating the GTS.
Combination Meter| Tester Display | Test Part | Control Range | Diagnostic Note |
| Indicat. Lamp ABS | ABS Warning Light | ON or OFF | Perform the test with the vehicle stopped and engine idling. |
- OK:
- The warning light turns on when operating the GTS.
| | GO TO METER / GAUGE SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) ()
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| 6.CHECK HARNESS AND CONNECTOR (IG1 TERMINAL)
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Disconnect the skid control ECU (master cylinder solenoid) connector.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
| Tester Connection | Switch Condition | Specified Condition |
| A24-46 (IG1) - Body ground | Ignition switch ON | 11 to 14 V |
Text in Illustration| *a | Front view of wire harness connector
(to Skid Control ECU (Master Cylinder Solenoid)) |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 7.CHECK HARNESS AND CONNECTOR (GND1, GND2 AND GND3 TERMINAL) |
Turn the ignition switch off.
Disconnect the skid control ECU (master cylinder solenoid) connectors.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
| Tester Connection | Condition | Specified Condition |
| A24-1 (GND1) - Body ground | Always | Below 1 Ω |
| A24-32 (GND2) - Body ground | Always | Below 1 Ω |
| A25-4 (GND3) - Body ground | Always | Below 1 Ω |
Text in Illustration| *a | Front view of wire harness connector
(to Skid Control ECU [Master Cylinder Solenoid]) |
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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