2001 INFINITI QX4 Factory Service Manual

Page 2161 of 2395

INFINITI QX4 2001  Factory Service Manual System DescriptionNBSC0004Power is supplied at all times
Ito ignition switch terminal 1
Ithrough 40A fusible link (lettere, located in the fuse and fusible link box).
With the ignition switch in the O

Page 2162 of 2395

INFINITI QX4 2001  Factory Service Manual Wiring Diagram Ð START ÐNBSC0005
MEL652L
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
EL
IDX
STARTING SYSTEM
Wiring Diagram Ð START Ð
SC-11

Page 2163 of 2395

INFINITI QX4 2001  Factory Service Manual Trouble Diagnoses with
Battery/Starting/Charging System Tester
NBSC0019NOTE:
To ensure a complete and thorough diagnosis, the battery, starter
and alternator test segments must be done as a set from s

Page 2164 of 2395

INFINITI QX4 2001  Factory Service Manual DIAGNOSTIC RESULT ITEM CHARTNBSC0019S01
Diagnostic item Service procedure
CRANKING VOLTAGE NORMAL Go to ªWORK FLOWº, SC-14.
CRANKING VOLTAGE LOW Go to ªWORK FLOWº, SC-14.
CHARGE BATTERYPerform the

Page 2165 of 2395

INFINITI QX4 2001  Factory Service Manual WORK FLOWNBSC0019S02
SEL411X
*1 SC-7
*2 SC-17*3 SC-15 *4 SC-17
STARTING SYSTEM
Trouble Diagnoses with Battery/Starting/Charging System Tester (Contd)
SC-14

Page 2166 of 2395

INFINITI QX4 2001  Factory Service Manual DIAGNOSTIC PROCEDURE 1NBSC0019S03Check ªBº Terminal CircuitNBSC0019S0301
1 CHECK POWER SUPPLY FOR STARTER MOTOR ªBº TERMINAL
1. Remove the fuel pump fuse.
2. Crank or start the engine (where possi

Page 2167 of 2395

INFINITI QX4 2001  Factory Service Manual 3 CHECK STARTER MOTOR GROUND CIRCUIT (VOLTAGE DROP TEST)
1. Check voltage between starter motor case and battery negative terminal using a digital circuit tester.
SEL414X
OK or NG
OK©Starter motor ª

Page 2168 of 2395

INFINITI QX4 2001  Factory Service Manual DIAGNOSTIC PROCEDURE 2=NBSC0019S04Check ªSº Terminal CircuitNBSC0019S0401
1 CHECK POWER SUPPLY FOR STARTER MOTOR ªSº TERMINAL
1. Remove the fuel pump fuse.
2. Crank or start the engine (where poss