Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Inspection Procedure
- PERFORM ACTIVE TEST BY INTELLIGENT TESTER (SLIP INDICATOR LIGHT)
- Using the intelligent tester's ACTIVE TEST, generate a control command and then check that the SLIP indicator light operates.
Skid control ECU
DIAGNOSTIC NOTE CHARTItem Vehicle Condition / Test Details Diagnostic Note SLIP INDI LIGHT Turns SLIP indicator light ON/OFF Observe combination meter OK: SLIP indicator light is turned on or off in accordance with intelligent tester.
OK: REPLACE SKID CONTROL ECU
NG: Go to Next Step
- Using the intelligent tester's ACTIVE TEST, generate a control command and then check that the SLIP indicator light operates.
- CHECK MULTIPLEX COMMUNICATION SYSTEM (SKID CONTROL ECU - COMBINATION METER)
- Check for open and short circuits in the multiplex communication system between the skid control ECU and combination meter.
NG: REPAIR OR REPLACE MULTIPLEX COMMUNICATION SYSTEM
OK: Go to Next Step
- CHECK COMBINATION METER (SLIP INDICATOR LIGHT)
- Check the combination meter (see PROBLEM SYMPTOMS TABLE ).
NG: REPAIR OR REPLACE COMBINATION METER
OK: REPLACE SKID CONTROL ECU
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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