Starting & Charging System: Overview Nissan Murano Z50

System Description

Power is supplied at all times

1. through 40A fusible link (letter M, located in the fuse and fusible link block)
2. to ignition switch terminal 1
3. through 15A fuse (No. 78, located in the IPDM E/R)
4. to CPU of IPDM E/R
5. through 10A fuse (No. 71, located in the IPDM E/R)
6. to CPU of IPDM E/R.

With the ignition switch in the ON or START position, power is supplied

1. through ignition relay (within the IPDM E/R)
2. to CPU of IPDM E/R.

When the selector lever in the P or N position, power is supplied

1. from TCM terminal 24
2. to IPDM E/R terminal 53.

Ground is supplied

1. to IPDM E/R terminals 38, 50 and 60
2. from 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

1. from ignition switch terminal 5
2. to IPDM E/R terminal 4 and
3. through IPDM E/R terminal 3
4. to starter motor terminal 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.

The alternator provides DC voltage to operate the vehicle's electrical system and to keep the battery charged. The voltage output is controlled by the IC regulator.

Power is supplied at all times

1. through 10A fuse (No. 33, located in the fuse and fusible link block)
2. to alternator terminal 4 ("S" terminal).

"B" terminal supplies power to charge the battery and operate the vehicle's electrical system. Output voltage is controlled by the IC regulator at terminal 4 ("S" terminal) detecting the input voltage.

The alternator is grounded to the engine block.

With the ignition switch in the ON or START position, power is supplied

1. through 10A fuse [No. 14, located in the fuse block (J/B)]
2. to combination meter terminal 20 for the charge warning lamp.

Ground is supplied

1. to combination meter terminal 4
2. through alternator terminal 3 ("L" terminal)
3. to alternator terminal 2 ("E" terminal)
4. through ground E29.

With power and ground supplied, the charge warning lamp will illuminate. When the alternator is providing sufficient voltage with the engine running, the ground is opened and the charge warning lamp will go off. If the charge warning lamp illuminates with the engine running, a malfunction is indicated.