Scheme 1
Scheme 2
Scheme 3
Mode III (Power Door Lock Operation)
See INFINITI - POWER DOOR LOCKS & TRUNK RELEASE article.
Mode IV (Driver Power Window Automatic Operation)
See appropriate POWER WINDOWS article.
Description
A communication signal is sent from BCM to all LCUs. LCUs return signal to BCM. Returned signals should be identical. If returned signals are not identical, LCUs and/or communication between BCM and LCUs are malfunctioning. Proceed with appropriate test.
A communication signal is sent from BCM to LCUs via data lines "A" and "B". LCUs return signal via data line "A". If signal is not returned, data line "A" circuit is malfunctioning. Proceed with appropriate test.
A communication signal is sent from BCM to LCUs via data lines "A" and "B". LCUs return signal via data line "B". If signal is not returned, data line "B" circuit is malfunctioning. Proceed with appropriate test.
A communication signal is sent from BCM to LCUs via data lines "A" and "B". LCUs return signal via data lines "A" and "B". If signal is not returned, data lines "A" and "B" circuits are malfunctioning. Proceed with appropriate test.
A communication signal is sent from BCM to LCUs via data lines "A" and "B". LCUs return signal via data lines "A" and "B". If signal is not returned, or is not identical to signal sent, data lines "A" and "B" circuits are malfunctioning. Proceed with appropriate test.