April 5, 2026: LEMON Manuals is launched! Read the announcement.

BCM Input/Output Signal Chart

WARNING: This page is about a different car, the 2019 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.

Input Signal Item

Transmit unit	Signal name
ECM	CAN communication	ID verification signal Engine status signal
IPDM E/R		Push-button ignition switch status signal Starter relay status signal* Starter control relay signal* Detention switch signal Interlock/PNP switch signal
TCM		Shift position signal
Combination meter		Vehicle speed signal
ABS actuator and electric unit (control unit)		Vehicle speed signal
NATS antenna amp.	Key ID signal
Push-button ignition switch	Push switch signal
Each door switch	Door switch signal
Stop lamp switch	Stop lamp switch signal
A/T shift selector (detention switch)	P position signal
TCM (transmission range switch)^*	P/N position signal

*: For VR30DDTT engine models

Output Signal Item

Reception unit	Signal name
ECM	CAN communication	ID verification signal
Combination meter (security indicator lamp)	Security indicator lamp signal
Inside key antenna	Inside key antenna signal