low battery SUZUKI SWIFT 2004 2.G Service Repair Manual

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Generator DescriptionS7RS0B1A01002
The basic charging system is the IC integral regulator charging system. The internal co mponents are connected
electrically as shown below.
I5JB0A1A0004-01
1. Pulley 6. Field coil11. Rear housing IG: Ignition terminal
2. Pulley nut 7. RectifierB: Generator output (Battery terminal) L: Lamp terminal
3. Rotor fan 8. BrushC: Generator cut terminal
4. Stator coil 9. RegulatorE: Ground
5. Stator core 10. Front housing FR: Field duty monitor terminal

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Diagnostic Information and Procedures
Battery InspectionS7RS0B1A04001
Common Causes of Failure
A battery is not designed to last indefinitely; however, with proper care, it will provide many years of service. If the
battery performs satisfactorily during te st but fails to operate properly for no apparent reason, the following are some
factors that may point to the cause of trouble:
• Accessories left on overnight or for an extended period without the generator operating.
• Slow average driving speeds for short periods.
• Electrical load exceeding generator output partic ularly with addition of aftermarket equipment.
• Defects in charging system such as high resistance, s lipping drive belt, loose generator output terminal, faulty
generator or voltage regulator, Refer to “Generator Symptom Diagnosis”.
• Battery abuse, including failure to keep battery cable terminals clean and tight or loose battery hold down.
• Mechanical problems in electrical sys tem such as shorted or pinched wires.
Visual Inspection
Check for obvious damage, such as cracked or broken case or cover, that could permit loss of electrolyte. If obvious
damage is noted, replace battery. Determine cause of damage and correct as needed.
Generator Symptom DiagnosisS7RS0B1A04002
CAUTION!
• Do not mistake polarities of “IG” terminal and “L” terminal.
• Do not create short circuit between “IG” and “L” terminals. Always connect these terminals through a lamp.
• Do not connect any load between “L” and “E” terminals.
• When connecting charger or booster battery to vehicle battery, refer to “Jump Starting in Case of Emergency”.

Trouble in charging system will show up as one or more of the following conditions:
1) Faulty indicator lamp operation.
2) An undercharged battery as evidenced by slow cranking or indicator dark.
3) An overcharged battery as evidenced by ex cessive spewing of electrolyte from vents.
Condition Possible cause Correction / Reference Item
Noisy generator Loose drive belt Adjust or replace drive belt.
Loose drive belt pulley Tighten by specified torque.
Loose mounting bolts Tighten by specified torque.
Worn or dirty bearings Replace.
Defective diode or stator Replace.
Charge light does not
light with ignition ON and
engine off Fuse blown
Replace fuse and check for shorted circuit.
Indicator lamp (LED) faulty Replace combination meter.
Wiring connection loose Tighten loose connection.
IC regulator or field coil faulty Replace.
Poor contact between brush and slip
ring Repair or replace.
Charge light does not go
out with engine running
(battery requires frequent
recharging) Drive belt loose or worn
Adjust or replace drive belt.
IC regulator or generator faulty Replace.
Wiring faulty Repair wiring.

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Generator Test (Undercharged Battery Check)S7RS0B1A04003
This condition, as evidenced by slow cranking or
indicator clear with dark or light yellow dot can be
caused by one or more of the following conditions even
though indicator lamp may be operating normal.
The following procedure also applies to cars with
voltmeter and ammeter.1) Make sure that undercharged condition has not been caused by accessories left on for extended period of
time.
2) Check drive belt for proper tension.
3) If battery defect is suspected, refer to “Battery Description”.
4) Inspect wiring for defects. Check all connections for tightness and cleanliness, battery cable connections
at battery, starting motor, ignition ground cable and
no “C” terminal circuit at ground.
5) Connect switch (6), load (5), battery (4), voltmeter (3) and ammeter (2) to generator (1) as shown in
figure.
Voltmeter: Set between generator “B” terminal
and ground.
Ammeter: Set between generator “B” terminal
and battery (+) terminal.
NOTE
Use fully charged battery.

6) Measure current and voltage.
No-Load Check 1) Run engine from idling up to 2000 rpm and read meters.
NOTE
Turn off switches of all accessories (wiper,
heater etc.).

Specification for undercharged battery (No-load
check)
Current: 10 A
Voltage: 14.2 – 14.8 V (at 20 °C, 68 °F)
NOTE
Consideration should be taken that voltage
will differ somewhat with regulator case
temperature as shown in figure.

2) Using service wire, ground “C” terminal (1) of
generator.
3) Measure voltage between “B” terminal of generator and body ground.
Voltage: 12.5 – 13.1 V (at 20 °C, 68 °F)
• If voltage is higher than standard value
If voltage is higher than standard value, check ground
of brushes.
If brushes are not grounded, replace IC regulator.
If voltage is lower than standard value, proceed to the
following check.
Load Check 1) Run engine at 2000 rpm and turn on head light and blower motor.
2) Measure current. If measure current is less than 30 A, repair or
replace generator.
IYSQ011A0007-01
[A]: Regulated voltage (V)
[B]: Heat sink temperature ( °C)
16.0
15.5
15.0
14.5
14.0
13.5
13.0
-30 0 20
[A]
[B]
68
22120 (˚C)
248 (˚F)
(V)
I6RS0B1A1002-01
I5JB0A1A0011-01

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Generator Test (Overcharged Battery Check)S7RS0B1A04004
1) To determine battery condition, refer to “Battery Description”.
2) If obvious overcharge condition exists as evidenced by excessive spewing of electrolyte, measure
generator “B” terminal voltage at engine 2000 rpm. 3) If measured voltage is higher than upper limit value,
proceed to disassemble generator.
4) Check ground of brushes. If brushes are not grounded, replace IC regulator. Then check field coil
for grounds and shorts, referring to “Generator
Inspection”.
Repair Instructions
Jump Starting in Case of EmergencyS7RS0B1A06001
CAUTION!
If vehicle is manual transaxle model and has
a catalytic converter, do not push or tow it to
start. Damage to its emission system and/or
to other parts may result.

Both booster and discharged battery should be treated
carefully when using ju mper cables. Follow the
procedure outlined as follows, being careful not to cause
sparks.
WARNING!
• Departure from these conditions or procedure described as follows could
result in:
– Serious personal injury (particularly to eyes) or property damage from such
causes as battery explosion, battery
acid, or electrical burns.
– Damage to electronic components of either vehicle.
• Remove rings, watches, and other jewelry. Wear approved eye protection.
• Be careful so that metal tools or jumper cables do not contact positive battery
terminal (or metal in contact with it) and
any other metal on vehicle, because a
short circuit could occur. • Never expose battery to open flame or
electric spark. Batteries generate gas
which is flammable and explosive.
• Do not allow battery fluid to contact eyes, skin, fabrics, or painted surface as fluid is
a corrosive acid. Flush any contacted area
with water immediately and thoroughly.
• Batteries should always be kept out of reach of children.
• Do not connect negative cable directly to negative terminal of dead battery.

1) Set parking brake and place automatic transaxle in PARK (NEUTRAL on manual transaxle). Turn off
ignition, turn off lights and all other electrical loads.
2) Check electrolyte level. If it is below low level line, add distilled water.
3) Attach end of one jumper cable to positive terminal of booster battery and the other end of the same
cable to positive terminal of discharged battery. (Use
12-volt battery only to jump start engine).
4) Attach one end of the remaining negative cable to negative terminal of booster battery, and the other
end to a solid engine ground (such as exhaust
manifold) at least 45 cm (18 in.) away from battery of
vehicle being started.
5) Start engine of vehicle with booster battery and turn off electrical accessories. Then start engine of the
vehicle with discharged battery.
16.0
15.5
15.0
14.5
14.0
13.5
13.0 -30 0 20
[C]
[D]
68
22120 (˚C)
248 (˚F)
(V)
I6RS0C1A0001-02

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With Charging Equipment
CAUTION!
When jump starting engine with charging
equipment, be sure equipment used is 12-
volt and negative ground. Do not use 24-volt
charging equipment. Using such equipment
can cause serious damage to electrical
system or electronic parts.

Battery Dismounting and RemountingS7RS0B1A06002
WARNING!
When handling battery, following safety
precautions should be followed:
• Hydrogen gas is produced by battery. A flame or spark near battery may cause the
gas to ignite.
• Battery fluid is highly acidic. Avoid spilling on clothing or other fabric. Any spilled
electrolyte should be flushed with large
quantity of water and cleaned immediately.

Dismounting
1) Disconnect negative cable (1).
2) Disconnect positive cable (2).
3) Remove retainer (3).
4) Remove battery (4).
Remounting 1) Reverse removal procedure.
2) Tighten battery cables securely.
Water Pump / Generator Drive Belt Tension
Inspection and Adjustment
S7RS0B1A06003
WARNING!
Disconnect negative cable at battery before
checking and adjusting belt tension.

1) Inspect belt for cranks, cuts, deformation, wear and clealiness. If it is necessary to replace belt, refer to
“Water Pump / Generator Drive Belt Removal and
Installation”.
2) Check belt for tension. Belt is in proper tension when it deflects the following specification under thumb
pressure (about 10 kg or 22 lb.).
If belt tension is out of spec ification, go to next steps.
Water pump / generator drive belt tension
“a”
Existing belt: 4.5 – 5.5 mm (0.18 – 0.22 in.) as
deflection / 10 kg (22 lbs)
New belt: 3.5 – 4 mm (0.14 – 0.16 in.)as deflection
/ 10 kg (22 lbs)
5. Body ground bolt
1
3 5
2
4
I4RS0B1A0006-01
“a”
I5JB0A1A0008-01

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3) After loosening generator bracket bolts (2) and pivot bolt (3), adjust belt tensio n to specification described
at step 2) by loosening / tightening generator adjust
bolt (1).
4) Tighten generator bracket bolts and pivot bolt as specified torque.
Tightening torque
Generator bracket bolt (a): 25 N·m (2.5 kgf-m,
18.0 lb-ft)
Generator pivot bolt (b): 50 N·m (5.0 kgf-m, 36.0
lb-ft)
5) Check belt tension for specification after turning crankshaft two rotations clockwise.
6) Tighten generator adjusting bolt (1) as specified torque.
Tightening torque
Generator adjusting bolt (c): 7 N·m (0.7 kgf-m,
5.0 lb-ft) by the specified procedure.
7) Connect negative cable at battery.Water Pump / Generator Drive Belt Removal and
Installation
S7RS0B1A06004
Removal 1) Disconnect negative cable at battery.
2) If vehicle equipped with A/C, remove compressor drive belt before removing water pump belt (1). Refer
to “Compressor Drive Belt Removal and Installation
in Section 7B” or “Compr essor Drive Belt Removal
and Installation in Section 7B”.
3) Loosen drive belt adjusting bolt (2) and generator pivot bolt (3).
4) Loosen generator adjusting bolt (4), and then remove water pump belt.
Installation
Reverse removal procedure for installation noting the
following.
• Adjust belt tension referring to “Water Pump / Generator Drive Belt Tension Inspection and
Adjustment” and “Compressor Drive Belt Inspection
and Adjustment in Section 7B” or “Compressor Drive
Belt Inspection and Adjustment in Section 7B”.
1, (c)
2, (a)
3, (b)
I5RW0C160007-01
4
23
1
I6RS0C1A0002-01

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Generator Unit ComponentsS7RS0B1A06005
Generator Dismounting and RemountingS7RS0B1A06006
Dismounting1) Disconnect negative (–) cable at battery.
2) Remove right side drive shaft referring to “Front Drive Shaft Assembly Removal and Installation in
Section 3A”.
3) Disconnect generator lead wire (“B” terminal wire) and coupler from generator.
4) Remove generator belt. Refer to “Water Pump / Generator Drive Belt Re moval and Installation”.
5) Remove generator bracket bolts and generator pivot bolt.
6) Remove generator. Remounting
Reverse dismounting procedure for remounting noting
the followings.
• Tighten each bolt and nut to specified torque referring
to “Generator Unit Components”.
• Adjust belt tension referring to “Water Pump / Generator Drive Belt Tension Inspection and
Adjustment”.
(a)
(b)
(c)
1
2 8
3 7 5 49 6(c)
(c)
I6RS0C1A0003-02
1. “B” terminal nut
5. Generator pivot bolt : 5 N⋅m (0.5 kgf-m, 3.5 lb-ft)
2. “B” terminal wire 6. Generator belt : 50 N⋅m (5.0 kgf-m, 36.0 lb-ft)
3. Connector 7. Generator : 25 N⋅m (2.5 kgf-m, 18.5 lb-ft)
4. Generator adjusting bolt 8. Generator bracket bolt

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Specifications
Charging System SpecificationsS7RS0B1A07001
Battery
Battery
: 48AH/20H, 40.6AH/5H 12 V
Generator
Tightening Torque SpecificationsS7RS0B1A07002
NOTE
The specified tightening torque is also described in the following.
“Generator Unit Components”
“Generator Components”

Reference:
For the tightening torque of fastener not specified in this section, refer to “Fasteners Information in Section 0A”.
Nominal output
12 V
Rated capacity 48 Ah/20 h
40.6 Ah/5 h
Cold cranking amperes 300 A (DIN)
Ty p e 80A type
Rated voltage 12 V
Nominal output 80A
Permissible max. speed 18,000 r/min.
No-load speed 1200 r/min. (rpm)
Regulated voltage 14.2 – 14.8 V at 25 ° C (77 °F)
Exposed brush length Standard: 16 mm (0.63 in.)
Limit: 5.0 mm (0.02 in.)
Permissible ambient temperature –30 to 100 °C (–22 to 212 °F)
Polarity Negative ground
Rotation Clockwise viewed from pulley side
Fastening partTightening torque
Note
N ⋅mkgf-mlb-ft
Generator bracket bolt 25 2.5 18.0 )
Generator pivot bolt 50 5.0 36.0 )
Generator adjusting bolt 70.7 5.0by the specified
procedure.
)

Downloaded from www.Manualslib.com manuals search engine Exhaust System: 1K-4
2) Install new seal ring and connect exhaust No.1 pipe (1) to exhaust manifold.
Tighten pipe fasteners to specified torque.
Tightening torque
Exhaust No.1 pipe bolt (a): 50 N·m (5.0 kgf-m,
36.5 lb-ft)
3) Install exhaust manifold stiffener (2). Tighten exhaust manifold stiffener bolts to specified
torque.
Tightening torque
Exhaust manifold stiffener bolt (b): 50 N·m (5.0
kgf-m, 36.5 lb-ft)
4) Install new seal ring and connect exhaust No.1 pipe (1) to exhaust No.2 pipe. Tighten pipe fasteners to
specified torque.
Tightening torque
Exhaust No.2 pipe bolt (c): 43 N·m (4.3 kgf-m,
31.0 lb-ft)
5) Install heated oxygen sensors (3) referring to “HO2S-1 and HO2S-2 Removal and Installation in
Section 1C”, if removed.
NOTE
Be sure to identify heated oxygen sensor
No.1 and No.2 by its connector color.

6) Connect heated oxygen sensor No.2 connector (1)
(connector color: green) and heated oxygen sensor
No.1 connector (2) (connector color: black), and then
fit coupler to br acket securely. 7) Install exhaust manifold cover to exhaust manifold.
8) Install A/C condenser to vehicle body for equipped
with A/C.
9) Install radiator referrin g to “Radiator Removal and
Installation in Section 1F” for equipped with A/C.
10) Install front bumper with fr ont grille by referring to
“Front Bumper and Rear Bumper Components in
Section 9K”.
11) Install engine cover.
12) Connect negative cable at battery.
13) Check exhaust system for exhaust gas leakage.
Exhaust Pipe and Muffler Removal and
Installation
S7RS0B1B06003
For replacement of exhaust pipe, be sure to hoist vehicle
and observe WARNING under “Exhaust System
Components” and the following.
CAUTION!
Exhaust manifold have three way catalytic
converter in it, it should not be exposed to
any impulse.
Be careful not to drop it or hit it against
something.

• Tighten bolts and nuts to specified torque when reassembling. Refer to “Exhaust System
Components”.
• After installation, start engine and check each joint of exhaust system for leakage.
2
(b)
(a)
1(C)
3
I4RS0A1B0005-01
1
2
I6RS0C1B0002-01

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1. Battery12. Pump motor23. Internal memory
2. Main fuse box 13. Solenoid valves24. Solenoid valve driver (transistor)
3. Ignition switch 14. Right-rear wheel speed sensor25. ECM
4. Circuit fuse box 15. Left-rear wheel speed sensor26. BCM
5. Combination meter 16. Right-front wheel speed sensor27. Brake fluid level switch
6. ABS warning light 17. Left-front wheel speed sensor28. Parking brake switch
7. EBD warning light (Brake warning light) 18. Data link connector29. CAN driver
8. Lamp driver module 19. To ECM, SDM and BCM
9. ABS hydraulic unit / control module assembly 20. Stop lamp
Terminal Wire color Circuit
E03 1
WHT/RED ABS pump motor driver (Transistor)
2— —
3— —
4— —
5 PPL/WHT Data link connector
6 WHT CAN communication line (low) for BCM
7 GRN/ORN Ignition switch
8 WHT CAN communication line (low) for ECM
9— —
10 RED CAN communication line (high) for ECM
11 — —
12 RED CAN communication line (high) for BCM
13 BLK Ground
14 WHT/BLU Solenoid valve power supply driver (Transistor)
15 LT GRN/BLK Left–rear wheel speed sensor (–)
16 LT GRN Left–rear wheel speed sensor (+)
17 — —
18 WHT Right–front wheel speed sensor (+)
19 WHT/BLK Right–front wheel speed sensor (–)
20 — —
21 RED/BLK Left–front wheel speed sensor (–)
22 RED Left–front wheel speed sensor (+)
23 — —
24 YEL Right–rear wheel speed sensor (+)
25 BRN Right–rear wheel speed sensor (–)
26 BLK Ground