Component Inspection

Component Inspection

1. Wait until the brake discs cool down sufficiently.
2. Ignition "OFF".
3. Ignition "ON".
4. Connect scantool and select "Diagnostic Trouble Codes (DTCs)" mode
5. Using a scantool, Clear DTC.
6. Select "Diagnostic Trouble Codes (DTCs)" mode again.
7. Are any DTCs present ?
YES
1) Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and then go to "Verification of Vehicle Repair" procedure.
NO
1) Fault is caused by Faulty HECU or was repaired and HECU memory was not cleared.
2) The DTC code can be set by excessive TCS control in normal system status. Go to "Verification of Vehicle Repair" procedure.