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Home >> Hyundai >> 2002 >> Accent GL, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 12 (Anti-Lock Brake System & Traction Control System) >> Diagnostic Tests >> DTC C1201, C1204, C1207 Or C1210 >> Testing Procedure

Testing Procedure

WARNING: This page is about a different car, the 2002 Hyundai XG350. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check wheel speed sensor installation. If no problem is found, go to next step. If problem is found, repair or replace wheel speed sensor as necessary. After repair, retest system.
  2. Check wheel speed sensor output voltage. Perform TEST NO. 6: WHEEL SPEED OUTPUT SENSOR VOLTAGE CHECK  under SYSTEM TESTS. If wheel speed sensor output voltage is as specified, go to next step. If wheel speed sensor output voltage is not as specified, replace wheel speed sensor. See WHEEL SPEED SENSORS  under REMOVAL & INSTALLATION. After repair, retest system.
  3. Check tone wheel on brake rotor for corrosion, foreign matter or broken and chipped teeth. If no problem with rotor is found, go to next step. If problem is found, replace brake rotor as necessary. See appropriate DISC & DRUM article. After repair, retest system.
  4. Check for open or high resistance in circuits between suspect wheel speed sensor and HECU. See WIRING DIAGRAMS  . If no problem is found, go to next step. If problem is found, repair as necessary. After repair, retest system.
  5. Replace HECU. See HYDRAULIC AND ELECTRONIC CONTROL UNIT  under REMOVAL & INSTALLATION. After repair, retest system.
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