VEHICLE STABILITY CONTROL SYSTEM DIAGNOSIS SYSTEM
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DESCRIPTION
When troubleshooting a vehicle with the diagnosis system, the only difference from the usual troubleshooting procedure is connecting an intelligent tester to the vehicle and reading various data output from the vehicle's skid control ECU.
The skid control ECU records DTCs when the computer detects a malfunction in the computer itself or in its circuits.
To check the DTCs, connect the intelligent tester to the DLC3 on the vehicle. The intelligent tester enables you to erase the DTCs, activate the various actuators, and check the Freeze Frame Data and Data List.
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Check the battery voltage.
If the voltage is below 11 V, recharge the battery before proceeding to the next step.
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DIAGNOSIS
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If the skid control ECU detects a malfunction, the ABS warning, brake warning, VSC warning and SLIP indicator lights will come on in order to warn the driver.
The table below indicates which lights will come on when there is a malfunction in a particular function.
Item / Trouble Area ABS EBD BA TRC VSC Skid Control ECU ABS warning light ○ ○ ○ - - ○ Brake warning light - ○ - - - ○ VSC warning light ○ ○ ○ ○ ○ ○ SLIP indicator light ○ ○ ○ ○ ○ ○ ○: Light ON
-: Light OFF
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The DTCs are simultaneously stored in the memory. The DTCs can be read by connecting the SST between terminals TC and CG of the DLC3 and observing the blinking pattern of the ABS warning and VSC warning lights or by connecting the intelligent tester.
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This system has a Test Mode (signal check) function Click here.
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WARNING LIGHT AND INDICATOR LIGHT INITIAL CHECK
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Release the parking brake.
Note
When releasing the parking brake, move the shift lever to the P position (for multi-mode manual transaxle model) or set chocks to hold the vehicle for safety purposes (for manual transaxle model).
Tech Tips
When the parking brake is applied or the level of the brake fluid is low, the brake warning light comes on.
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When the ignition switch is turned to ON, check that the ABS warning, brake warning, VSC warning and SLIP indicator lights come on for approximately 3 seconds.
Tech Tips
If the warning light and indicator light check result is not normal, proceed to troubleshooting for the ABS warning, brake warning, VSC warning and SLIP indicator light circuits.
If the indicator remains on or does not come on, proceed to troubleshooting for the light circuits listed below.
Trouble Area See procedure ABS warning light circuit (Remains on) ABS warning light circuit (Does not come on) Brake warning light circuit (Remains on) Brake warning light circuit (Does not come on) VSC warning light circuit (Remains on) VSC warning light circuit (Does not come on) SLIP indicator light circuit (Remains on) SLIP indicator light circuit (Does not come on)
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