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STEP LAMP LT-155 C D E F G H I J L M A B LT ● to rear LH door control unit terminal 11 through grounds B17 and B57 ● to rear RH door control unit terminal 11 through grounds B217 and B256. OPERATING PROCEDURE BCM is connected to driver door control unit as DATA LINE A-3. ● to BCM terminal 33, 37, 142, or 143 ● through front door switch (driver or passenger side), door lock assembly rear LH or RH (door switch). Then BCM sends a signal to the driver door control unit (LCU 01) to turn on step lamp. With ground supplied, |