DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK CAN COMMUNICATION SYSTEM
CHECK MULTIPLEX COMMUNICATION SYSTEM
CHECK IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED
CHECK BATTERY
INSPECT TRACTION OFF SWITCH
INSPECT TRACTION OFF SWITCH (GROUND TERMINAL)
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - TRACTION OFF SWITCH)
INSPECT COMBINATION METER ASSEMBLY
VEHICLE STABILITY CONTROL SYSTEM (w/ VDIM) - Slip Indicator Light Remains ON
DESCRIPTION
The skid control ECU is connected to the combination meter via CAN and multiplex communications.
The SLIP indicator blinks during VSC and/or TRC operation.
When the system fails, the SLIP indicator comes on to warn the driver .
The SLIP indicator comes on when traction control is terminated by pressing the traction OFF switch.
WIRING DIAGRAM
INSPECTION PROCEDURE
- When replacing the skid control ECU, perform zero point calibration and store system information .
- The SLIP indicator light comes on when the traction OFF switch is ON.
| 1.CHECK CAN COMMUNICATION SYSTEM |
Check if the CAN communication system DTC is output ( for LHD, or for RHD).
- Result:
| Condition | Proceed to |
| DTC is not output | A |
| DTC is output | B |
| | INSPECT CAN COMMUNICATION SYSTEM |
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| 2.CHECK MULTIPLEX COMMUNICATION SYSTEM |
Check if the multiplex communication system DTC is output .
- Result:
| Condition | Proceed to |
| DTC is not output | A |
| DTC is output | B |
| | INSPECT MULTIPLEX COMMUNICATION SYSTEM |
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| 3.CHECK IF SKID CONTROL ECU CONNECTOR IS SECURELY CONNECTED |
Check if the skid control ECU connector is securely connected.
- OK:
- The connector should be securely connected.
| | CONNECT CONNECTOR TO ECU CORRECTLY |
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Check the battery voltage.
- Standard voltage:
- 11 to 14 V
| | CHECK AND REPLACE CHARGING SYSTEM OR BATTERY |
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| 5.INSPECT TRACTION OFF SWITCH |
Disconnect the traction OFF switch connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
| Tester Connection | Condition | Specified Condition |
| 3 - 4 | Switch is pressed | Below 1 Ω |
| 3 - 4 | Switch is not pressed | 10 kΩ or higher |
| | REPLACE TRACTION OFF SWITCH |
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| 6.INSPECT TRACTION OFF SWITCH (GROUND TERMINAL) |
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
| Tester Connection | Condition | Specified Condition |
| J37-4 - Body ground | Always | Below 1 Ω |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) |
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| 7.CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - TRACTION OFF SWITCH) |
Disconnect the skid control ECU connector.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
| Tester Connection | Condition | Specified Condition |
| J77-7 (CSW) - J37-3 | Always | Below 1 Ω |
| J77-7 (CSW) - Body ground | Always | 10 kΩ or higher |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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| 8.INSPECT COMBINATION METER ASSEMBLY |
Reconnect the skid control ECU connector and the traction OFF switch connector.
Perform Active Test of the combination meter (meter CPU) using the intelligent tester .
- OK:
- The SLIP indicator light turns on or off in accordance with the intelligent tester.
- If troubleshooting has been carried out according to the Problem Symptoms Table, refer back to the table and proceed to the next step before replacing the part .
| | REPLACE COMBINATION METER ASSEMBLY |
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LEXUS IS250, IS220d / GSE20 ALE20
