2002 NISSAN TERRANO Service Repair Manual

Trouble Diagnoses
If any abnormality is found, immediately disconnect battery negative terminal.
SEL761W
STARTING SYSTEM
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Construction
MEL440H
MEL701P
STARTING SYSTEM
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YEL350D
STARTING SYSTEM
Construction (Cont'd)
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Magnetic Switch Check
Magnetic Switch Check
IBefore starting to check, disconnect battery ground cable.
IDisconnect ªMº terminal of starter motor.
1. Continuity test (between ªSº terminal and switch body).
INo continuity ... Replace.
2. Continuity test (between ªSº terminal and ªMº terminal).
INo continuity ... Replace.
Pinion/Clutch Check
1. Check to see if pinion locks in one direction and rotates
smoothly in the opposite direction.
IIf it does not lock (or locks) in either direction or unusual
resistance is evident ... Replace.
2. Check pinion movement
IIf it is hard to move, apply grease or, if necessary, replace.
3. Check ball bearing.
Spin outer race of ball bearing to ensure that it turns smoothly
without binding.
IAbnormal resistance ... Replace.
SEL555E
SEL556E
YEL546D
YEL547D
YEL548D
STARTING SYSTEM
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4. Inspect pinion teeth.
IReplace pinion if teeth are worn or damaged. (Also check
condition of ring gear teeth.)
5. Inspect reduction gear teeth.
IReplace reduction gear if teeth are worn of damaged.
(Also check condition of armature shaft gear teeth.)
Brush Check
BRUSH
Check wear of brush.
Wear limit length:
Refer to SDS (SC-30).
IExcessive wear ... Replace.
BRUSH HOLDER
1. Perform insulation test between brush holder (positive side)
and its base (negative side).
IContinuity exists ... Replace.
2. Check brush to see if it moves smoothly.
IIf brush holder is bent, replace it; if sliding surface is dirty,
clean.
Field Coil Check
1. Continuity test (between field coil positive terminal and positive
brushes).
INo continuity ... Replace field coil.
2. Insulation test (between field coil positive terminal and yoke).
IContinuity exists ... Replace field coil.
SEL014Z
YEL549D
YEL550D
SEL103E
STARTING SYSTEM
Pinion/Clutch Check (Cont'd)
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Armature Check
1. Continuity test (between two segments side by side).
INo continuity ... Replace.
2. Insulation test (between each commutator bar and shaft).
IContinuity exists ... Replace.
3. Check commutator surface.
IRough ... Sand lightly with No. 500-600 emery paper.
4. Check diameter of commutator.
Commutator minimum diameter:
Refer to SDS (SC-30).
ILess than specified value ... Replace.
SEL625B
SEL104E
SEL020Z
SEL021Z
STARTING SYSTEM
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5. Check depth of insulating mold from commutator surface.
ILess than 0.2 mm (0.008 in) ... Undercut to 0.5 - 0.8 mm
(0.020 - 0.031 in)
Assembly
Carefully observe the following instructions.
GREASE POINT
IRear cover metal
IGear case metal
ICenter bracket metal
IFrictional surface of pinion
IMoving portion of shift lever
IPlunger of magnetic switch
IReduction gear
PINION PROTRUSION LENGTH ADJUSTMENT
Reduction gear type
Compare movement ªº in height of pinion when it is pushed out
with magnetic switch energized and when it is pulled out by hand
until it touches stopper.
Movement ªº:
Refer to SDS (SC-30).
INot in the specified value ... Adjust by adjusting plate.
SEL022Z
SEL497D
SEL573B
STARTING SYSTEM
Armature Check (Cont'd)
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System Description
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 4 (S) through:
I10A fuse (No. 31, 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 4 (S) detecting the input voltage (ZD30DDTi engine models). The
charging circuit is protected by the 100A (A/T models) fusible link.
The alternator is grounded to the engine block.
With the ignition switch in the ON or START position, power is supplied
Ithrough 10A fuse [No. 12, located in the fuse block (J/B)]
Ito combination meter terminal 28 for the charge warning lamp.
Ground is supplied to terminal 2 of the combination meter through terminal 1(L) (TD27Ti engine models) or
3(L) (ZD30DDTi engine model) of the alternator. 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.
CHARGING SYSTEM
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