Diagnostic Trouble Code Chart

NOTE:

Using SST 09843-18020 or 09843-18040, connect terminals Tc and E₁ of the DLC1 or Tc and CG of the DLC3.
If no abnormality is found when inspecting parts, inspect the ECU.
If a malfunction code is displayed during the DTC check, check the circuit listed by code. For details of each code, refer to the diagnostic procedure linked to that DTC in the DTC index table.

DIAGNOSTIC TROUBLE CODE INDEX

DTC No.

Detection Item

Trouble Area

Malfunction in steering angle sensor

Open or short circuit of yaw rate sensor circuit

Malfunction in yaw rate sensor

Malfunction in Park/Neutral position switch

Malfunction in ABS control system

ABS control system

Open or short circuit of NE signal circuit

ECM system malfunction

Engine control system

Brake fluid level low
Open circuit of brake fluid level warning switch circuit

ECM communication circuit malfunction

Malfunction in ABS & BA & TRAC & VSC ECU
Open circuit of VSC warning indicator circuit

⁽¹⁾	At the same time, when the check engine light lights up, there is a malfunction in the engine system. At the same time, when the check engine light goes off, BA & TRAC & VSC system is normal.

⁽²⁾	There is a case that LEXUS hand-held tester cannot be used when the VSC warning indicator is always on.