Description & Operation

WARNING: This page is about a different car, the 2004 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.

Power is supplied at all times through 40A fusible link (letter M, located in the fuse and fusible link block) to ignition switch terminal No. 1 through 15A fuse (No. 78, located in the IPDM E/R) to CPU of IPDM E/R through 10A fuse (No. 71, located in the IPDM E/R) to CPU of IPDM E/R.

With the ignition switch in the "ON" or "START" position, power is supplied through ignition relay (within the IPDM E/R) to CPU of IPDM E/R.

When the selector lever in the "P" or "N" position, power is supplied from TCM terminal No. 24 to IPDM E/R terminal No. 53.

Ground is supplied to IPDM E/R terminals No. 38, 50 and 60 from body grounds E13, E26 and E28. Then starter relay is turn ON.

With the ignition switch in the "START" position, IPDM E/R is energized and power is supplied from ignition switch terminal No. 5 to IPDM E/R terminal No. 4 and through IPDM E/R terminal No. 3 to starter motor terminal No. 1.

The starter motor plunger closes and provides a closed circuit between the battery and starter motor. The starter motor is grounded to the engine block. With power and ground supplied, cranking occurs and the engine starts.