Infiniti G20 (P11). Manual — part 522
DIAGNOSTIC PROCEDURE 3
=NCSC0020S05
Check “S” Terminal Circuit
NCSC0020S0501
1
CHECK “S” TERMINAL CONNECTION
Check to see if “S” terminal is clean and tight.
OK or NG
OK
©
GO TO 2.
NG
©
Repair “S” terminal connection. Confirm repair by performing complete Battery/Starting/
Charging system test.
2
CHECK ALTERNATOR “S” TERMINAL CIRCUIT
Check voltage between alternator connector E106 terminal 4 (W) and ground using a digital circuit tester.
SEL953X
OK or NG
OK
©
GO TO 3.
NG
©
Check the following.
I
7.5A fuse (No. 37, located in fuse and fusible link box)
I
Harness for open or short between alternator and fuse
3
CHECK “S” TERMINAL CONNECTION QUALITY (VOLTAGE DROP TEST)
Check voltage between alternator connector E106 terminal 4 (W) and battery positive terminal using a digital tester.
SEL954X
OK or NG
OK
©
Replace the alternator. Confirm repair by performing complete Battery/Starting/Charging
system test.
NG
©
Check harness between the battery and the alternator for poor continuity.
MALFUNCTION INDICATOR
NCSC0020S06
The
IC
regulator
warning
function
activates
to
illuminate
“CHARGE” warning lamp, if any of the following symptoms occur
while alternator is operating:
I
Excessive voltage is produced.
I
No voltage is produced.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
EL
IDX
CHARGING SYSTEM
Trouble Diagnoses with Battery/Starting/Charging System Tester (Cont’d)
SC-29
Construction
NCSC0012
MEL965N
MEL161JA
Removal and Installation
NCSC0013
1.
Remove A/C compressor assembly fixing bolt and move the
compressor assembly under the vehicle.
2.
Remove alternator adjusting bar.
3.
Remove alternator bracket with alternator.
4.
Pull out alternator assembly under the vehicle.
5.
Remove alternator pivot bolt from bracket.
6.
Install in the reverse order of removal.
CHARGING SYSTEM
Construction
SC-30
Battery
NCSC0014
Type
80D26L
Capacity
V-AH
12-55
Cold cranking current
A
(For reference value)
582
Starter
NCSC0015
Type
S114–831
HITACHI make
Reduction gear type
System voltage
12V
No-load
Terminal voltage
11.0V
Current
Less than 90A
Revolution
More than 2,700 rpm
Minimum diameter of commutator
28.0 mm (1.102 in)
Minimum length of brush
10.5 mm (0.413 in)
Brush spring tension
16.2 N (1.65 kg, 3.64 lb)
Clearance between bearing metal and armature shaft
Less than 0.2 mm (0.008 in)
Clearance between pinion front edge and pinion stopper
0.3 - 2.5 mm (0.012 - 0.098 in)
Alternator
NCSC0016
Type
A2TB0491A
MITSUBISHI make
Nominal rating
12V-90A
Ground polarity
Negative
Minimum revolution under no-load (When 13.5 volts is applied)
Less than 1,300 rpm
Hot output current (When 13.5 volts is applied)
More than 25A/1,300 rpm
More than 67A/2,500 rpm
Regulated output voltage
14.1 - 14.7V
Minimum length of brush
5.0 mm (0.197 in)
Brush spring pressure
4.8 - 6.0 N (490 - 610 g, 17.28 - 21.51 oz)
Slip ring minimum outer diameter
22.1 mm (0.870 in)
Rotor (Field coil) resistance
1.8 - 2.1
Ω
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
EL
IDX
SERVICE DATA AND SPECIFICATIONS (SDS)
Battery
SC-31
NOTES
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