2003 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Diagnostic Trouble Code Chart

DIAGNOSTIC TROUBLE CODE CHART

DTC No. Detection item Trouble area
B1221 (1) ( DTC B1221 POWER WINDOW SWITCH CIRCUIT ON DRIVER DOOR ) Power window switch circuit on driver door
  • Power window regulator master switch assy
  • Multiplex network door ECU front LH
B1223(1) ( DTC B1223 POWER WINDOW SWITCH CIRCUIT ON PASSENGER DOOR ) Power window switch circuit on passenger door
  • Power window regulator switch assy
  • Multiplex network door ECU front RH
B1231 ( DTC B1231 JAM PROTECTION LIMIT SWITCH CIRCUIT ON DRIVER DOOR, DTC B1232 JAM PROTECTION PULSE SWITCH CIRCUIT ON DRIVER DOOR ) Jam protection limit switch circuit on driver door
  • Power window regulator motor assy LH
  • Wire harness
B1232 ( DTC B1231 JAM PROTECTION LIMIT SWITCH CIRCUIT ON DRIVER DOOR, DTC B1232 JAM PROTECTION PULSE SWITCH CIRCUIT ON DRIVER DOOR ) Jam protection pulse switch circuit on driver door
  • Power window regulator motor assy LH
  • Wire harness
B1233 ( DTC B1233 JAM PROTECTION LIMIT SWITCH CIRCUIT ON PASSENGER DOOR, DTC B1234 JAM PROTECTION PULSE SWITCH CIRCUIT ON PASSENGER DOOR ) Jam protection limit switch circuit on passenger door
  • Power window regulator motor assy RH
  • Wire harness
B1234 ( DTC B1233 JAM PROTECTION LIMIT SWITCH CIRCUIT ON PASSENGER DOOR, DTC B1234 JAM PROTECTION PULSE SWITCH CIRCUIT ON PASSENGER DOOR ) Jam protection pulse switch circuit on passenger door
  • Power window regulator motor assy RH
  • Wire harness
(1) : Monitor code; detecting the switch condition. The B1221 is output when the driver's power window switch of the master switch is operating at the UP or DOWN. The B1223 is output when the passenger's power window switch of the master switch is operating at the UP or DOWN.
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