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 and proceed to the relevant troubleshooting procedure. See ABS & HYDRAULIC BRAKE BOOSTER POWER SUPPLY SYSTEM PROBLEM SYMPTOMS table.
NOTE:
When replacing ABS & BA & TRAC & VSC ECU, sensor or etc., turn the ignition switch OFF.
ABS & HYDRAULIC BRAKE BOOSTER POWER SUPPLY SYSTEM PROBLEM SYMPTOMS
| Symptom | Suspect Area | Refer To |
|---|---|---|
| ABS does not operate | Only when 1. to 4. are all normal and the problem is still occurring, replace the ABS & BA & TRAC & VSC ECU.
If abnormal, check the hydraulic circuit for leakage (See CHECK FOR FLUID LEAKAGE in VEHICLE SKID CONTROL & BRAKE ASSIST SYSTEM - DIAGNOSIS - GS 300 & GS 430 article). |
PRE-CHECK DTC C1241/41: IG POWER SOURCE CIRCUIT DTC C0200/31-C0215/34: SPEED SENSOR CIRCUIT HYDRAULIC BRAKE BOOSTER article |
| ABS does not operate efficiently | Only when 1. to 4. are all normal and the problem is still occurring, replace the ABS & BA & TRAC & VSC ECU.
If abnormal, check the hydraulic circuit for leakage (See CHECK FOR FLUID LEAKAGE in VEHICLE SKID CONTROL & BRAKE ASSIST SYSTEM - DIAGNOSIS - GS 300 & GS 430 article). |
PRE-CHECK DTC C0200/31-C0215/34: SPEED SENSOR CIRCUIT DTC C1249/49: STOP LIGHT SWITCH CIRCUIT HYDRAULIC BRAKE BOOSTER article |
| ABS warning light abnormal |
|
ABS WARNING LIGHT CIRCUIT |
| DTC check cannot be done | Only when 1. and 2. are all normal and the problem is still occurring, replace the ABS & BA & TRAC & VSC ECU.
|
ABS WARNING LIGHT CIRCUIT TC TERMINAL CIRCUIT |
| Speed sensor signal check cannot be done |
|
TS TERMINAL CIRCUIT |