Lexus IS250 · Service Manual RESTRAINTS

TERMINALS OF ECU

System information

COMBINATION METER ASSEMBLY

B126294E01

Voltage:

Terminal No. (Symbols)	Terminal Description	Condition	Specified Condition
J34-12 (IG+) - Body ground	Power supply	Engine switch OFF → ON (IG)	Below 1 V → 10 to 14 V

Resistance:

Terminal No. (Symbols)	Terminal Description	Condition	Specified Condition
J35-4 (P/SB) - Body ground	Passenger seat belt signal	The passenger seat is occupied, seat belt is fastened → unfastened	Below 1 Ω → 10 kΩ or higher
J34-1 (E2) - Body ground	Ground	Always	Below 1 Ω

MULTI-MEDIA MODULE DISPLAY (WITH NAVIGATION SYSTEM)

B126321E01

Voltage:

Terminal No. (Symbols)	Terminal Description	Condition	Specified Condition
J50-3 (IG+) - Body ground	Power supply	Engine switch OFF → ON (IG)	Below 1 V → 10 to 14 V

Resistance:

Terminal No. (Symbols)	Terminal Description	Condition	Specified Condition
J50-21 (PBEW) - Body ground	Passenger seat belt signal	The passenger seat is occupied seat belt is fastened → unfastened	Below 1 Ω → 10 kΩ or higher

INTEGRATION CONTROL & PANEL (WITHOUT NAVIGATION SYSTEM)

B126320E01

Voltage:

Terminal No. (Symbols)	Terminal Description	Condition	Specified Condition
J54-4 (IG+) - Body ground	Power supply	Engine switch OFF → ON (IG)	Below 1 V → 10 to 14 V

Resistance:

Terminal No. (Symbols)	Terminal Description	Condition	Specified Condition
J54-13 (PBEW) - Body ground	Passenger seat belt signal	The passenger seat is occupied seat belt is fastened → unfastened	Below 1 Ω → 10 kΩ or higher