Problem Symptoms Table
If a normal code is displayed during the DTC check but the problem still occurs, check the circuits for each problem symptom in the order given in PROBLEM SYMPTOMS TABLE and proceed to the relevant (DTC No.).
NOTE:
When replacing skid control ECU, sensor or etc., turn the ignition switch OFF.
PROBLEM SYMPTOMS TABLE
| Symptom | Suspect Area | Reference |
|---|---|---|
| ABS does not operate BA does not operate EBD does not operate |
If the symptoms still occur even after the following circuits in suspect areas are inspected and proved to be normal, replace the skid control ECU. | |
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| ABS does not operate efficiently BA does not operate efficiently EBD does not operate efficiently |
If the symptoms still occur even after the following circuits in suspect areas are inspected and proved to be normal, replace the skid control ECU. | |
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| ABS warning light abnormal |
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| DTC of ABS check cannot be done | If the symptoms still occur even after the following circuits in suspect areas are inspected and proved to be normal, replace the skid control ECU. | |
| 1. CHECK THE DTC AGAIN AND MAKE SURE THAT THE NORMAL CODE IS OUTPUT. | PRE-CHECK | |
| 2. TC TERMINAL CIRCUIT | ||
| Sensor signal check cannot be done | 1. TS TERMINAL CIRCUIT | |
| 2. Skid control ECU | ||
| TRAC does not operate | If the symptoms still occur even after the following circuits in suspect areas are inspected and proved to be normal, replace the skid control ECU. | |
| 1. Check the DTC again and make sure that the normal code is output.PRE-CHECK | ||
| 2. IG Power Source Circuit | DTC C1241/41, C1257/57: LOW BATTERY POSITIVE VOLTAGE OR ABNORMALLY HIGH BATTERY POSITIVE VOLTAGE; POWER SUPPLY DRIVE CIRCUIT MALFUNCTION | |
| 3. Speed Sensor Circuit | CIRCUIT DESCRIPTION CIRCUIT DESCRIPTION |
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| VSC does not operate | If the symptoms still occur even after the following circuits in suspect areas are inspected and proved to be normal, replace the skid control ECU. | |
| 1. CHECK THE DTC AGAIN AND MAKE SURE THAT THE NORMAL CODE IS OUTPUT. | PRE-CHECK | |
| 2. IG Power Source Circuit | DTC C1241/41, C1257/57: LOW BATTERY POSITIVE VOLTAGE OR ABNORMALLY HIGH BATTERY POSITIVE VOLTAGE; POWER SUPPLY DRIVE CIRCUIT MALFUNCTION | |
| 3. Check the hydraulic circuit for leakage. | - | |
| 4. SPEED SENSOR CIRCUIT | |
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| 5. DECELERATION SENSOR CIRCUIT | |
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| 6. YAW RATE SENSOR CIRCUIT | |
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| 7. STEERING SENSOR CIRCUIT | ||
| SLIP indicator light abnormal | SLIP INDICATOR LIGHT CIRCUIT | |
| Skid control ECU | ||
| VSC OFF indicator abnormal | If the symptoms still occur even after the following circuits in suspect areas are inspected and proved to be normal, replace the skid control ECU. | |
| CHECK THE DTC AGAIN AND MAKE SURE THAT THE NORMAL CODE IS OUTPUT. | ||
| VSC OFF INDICATOR LIGHT CIRCUIT | ||
| DTC of VSC check cannot be done | If the symptoms still occur even after the following circuits in suspect areas are inspected and proved to be normal, replace the skid control ECU. | |
| CHECK THE DTC AGAIN AND MAKE SURE THAT THE NORMAL CODE IS OUTPUT. | ||
| TC TERMINAL CIRCUIT | ||
| VSC warning light abnormal | If the symptoms still occur even after the following circuits in suspect areas are inspected and proved to be normal, replace the skid control ECU. | |
| CHECK THE DTC AGAIN AND MAKE SURE THAT THE NORMAL CODE IS OUTPUT. | ||
| VSC | VSC WARNING LIGHT CIRCUIT |