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Home >> Lexus >> 2012 >> LS 600hL >> Repair and Diagnosis >> Suspension >> Electronic Suspension >> Active Stabilizer Suspension System (Diagnostic Codes (C1901 - U01108)) >> Active Stabilizer Suspension System >> DTC C1943: Front Vehicle Speed Signal >> Description

DTC C1943: Front Vehicle Speed Signal: Description

If the front active stabilizer control ECU receives a wheel speed malfunction signal, DTC C1943 is output. The wheel speed signal is diagnosed by the skid control ECU. If electronically controlled brake system related DTCs are output, perform a diagnosis for those DTCs. If no electronically controlled brake system DTCs are output, there may be a malfunction in the front active stabilizer control ECU.

DTC Code Detection Condition Trouble Area
C1943 Wheel speed signals are sent from skid control ECU to front active stabilizer control ECU, but signal reception is possible only for 1 wheel or less for 5 seconds
  • Electronically controlled brake system
  • Front active stabilizer control ECU
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