Infiniti I30 (A33). Manual — part 582
DIAGNOSTIC PROCEDURE 2
=NHSC0019S04
Check “S” Terminal Circuit
NHSC0019S0401
1
CHECK POWER SUPPLY FOR STARTER MOTOR “S” TERMINAL
1. Remove the fuel pump fuse.
2. Crank or start the engine (where possible) until the fuel pressure is released.
3. Turn the ignition OFF.
4. Disconnect starter motor connector.
5. Check voltage between starter motor connector E201 terminal 2 (B/R) and ground using a digital circuit tester.
SEL964X
OK or NG
OK
©
GO TO 2.
NG
©
Check the following.
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40A fusible link (letter C, located in fuse and fusible link box)
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Park/neutral position relay
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Harness for open or short
2
CHECK “S” TERMINAL CONNECTION QUALITY (VOLTAGE DROP TEST)
1. Connect starter motor connector.
2. Check voltage between starter motor connector E201 terminal 2 (B/R) and battery positive terminal using a digital
tester.
SEL965X
OK or NG
OK
©
Starter motor “S” terminal circuit is OK. Further inspection necessary. Refer to “WORK
FLOW”, SC-14.
NG
©
Check harness between the battery and the starter motor “S” terminal for poor continuity.
GI
MA
EM
LC
EC
FE
AT
AX
SU
BR
ST
RS
BT
HA
EL
IDX
STARTING SYSTEM
Trouble Diagnoses with Battery/Starting/Charging System Tester (Cont’d)
SC-17
MINIMUM SPECIFICATION OF CRANKING VOLTAGE
REFERENCING COOLANT TEMPERATURE
NHSC0019S05
Engine coolant temperature
Voltage V
−30°C to −20°C (−22°F to −4°F)
8.2
−19°C to −10°C (−2°F to 14°F)
8.7
−9°C to 0°C (16°F to 32°F)
9.1
More than 1°C (More than 34°F)
9.4
Construction
NHSC0006
SEL456TF
SEL457T
Removal and Installation
NHSC0007
REMOVAL
NHSC0007S01
1.
Remove air duct assembly.
2.
Remove harness protector from engine room harness.
3.
Disconnect starter harness.
4.
Remove starter bolts (two).
5.
Remove starter.
STARTING SYSTEM
Trouble Diagnoses with Battery/Starting/Charging System Tester (Cont’d)
SC-18
SEL458T
INSTALLATION
NHSC0007S02
To install, reverse the removal procedure.
Pinion/Clutch Check
NHSC0008
1.
Inspect pinion teeth.
I
Replace pinion if teeth are worn or damaged. (Also check
condition of ring gear teeth.)
2.
Inspect reduction gear teeth.
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Replace reduction gear if teeth are worn or damaged. (Also
check condition of armature shaft gear teeth.)
3.
Check to see if pinion locks in one direction and rotates
smoothly in the opposite direction.
I
If it locks or rotates in both directions, or unusual resistance is
evident, replace.
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LC
EC
FE
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BR
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RS
BT
HA
EL
IDX
STARTING SYSTEM
Removal and Installation (Cont’d)
SC-19
System Description
NHSC0009
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 to alternator terminal 3 (S) through:
I
120A fusible link (letter A, located in the fuse and fusible link box), and
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10A fuse (No. 70, located in the fuse and fusible link box).
Terminal B supplies power to charge the battery and operate the vehicle’s electrical system. Output voltage
is controlled by the IC regulator at terminal 3 (S) detecting the input voltage. The charging circuit is protected
by the 120A fusible link.
The alternator is grounded to the engine block.
With the ignition switch in the ON or START position, power is supplied
I
through 10A fuse [No. 30, located in the fuse block (J/B)]
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to combination meter terminal 66 for the charge warning lamp.
Ground is supplied to terminal 68 of the combination meter through terminal 2 (L) of the alternator. With power
and ground supplied, the charge warning lamp will illuminate. When the alternator is providing sufficient volt-
age 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 fault is indicated.
CHARGING SYSTEM
System Description
SC-20
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