Mitsubishi Galant (2004+). Manual - part 168

CHARGING SYSTEM

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ENGINE ELECTRICAL

16-13

NOTE: The voltage waveform of the generator "B" terminal can 
undulate as shown at left. This waveform is produced when the 
regulator operates according to fluctuations in the generator 
load (current), and is normal for the generator.
If the ripple height is abnormally high (approximately 2 V or 
more during idling), the wires between the generator "B" termi-
nal and the battery have broken due to fuse blowing, etc. The 
generator is usually operating properly.

.

ABNORMAL WAVEFORMS EXAMPLES
NOTE: The size of the waveform patterns can differ greatly, 
depending on the adjustment of the variable knob on the oscil-
loscope.
NOTE:  Identification of abnormal waveforms is easier when 
there is a large output current (regulator is not operating). 
(Waveforms can be observed when the headlights are illumi-
nated.)
NOTE: Check the conditions of the generator malfunction light 
(illuminated/not illuminated) also, and carry out a total check.

AKX00189

0.4

(V)

0.2

  0

–0.2

–0.4

VOLTAGE AT
GENERATOR
"B" TERMINAL

TIME

AB

AKX00190

CHARGING SYSTEM

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ENGINE ELECTRICAL

16-14

ABNORMAL WAVEFORMS

• Example 1

PROBABLE CAUSE: Open circuit in diode

• Example 2

PROBABLE CAUSE: Short-circuit in diode

• Example 3

PROBABLE CAUSE: Open circuit in stator coil

• Example 4

PROBABLE CAUSE: Short-circuit in stator coil

AKX00191

AKX00192

AKX00193

AKX00194

CHARGING SYSTEM

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ENGINE ELECTRICAL

16-15

GENERATOR ASSEMBLY

REMOVAL AND INSTALLATION <2.4L ENGINE>

M1161001400593

REMOVAL SERVICE POINT

.

<<A>> GENERATOR ASSEMBLY REMOVAL
Remove the generator assembly from above the vehicle.

Pre-removal Operation
• Side Under Cover Removal (Refer to GROUP 51, Under 

Cover 

P.51-11

).

• Drive Belt Removal (Refer to GROUP 11A, Crankshaft 

Pulley 

P.11A-26

).

Post-installation Operation
• Drive Belt Installation (Refer to GROUP 11A, Crankshaft 

Pulley 

P.11A-26

).

• Drive Belt Tension Check (Refer to 

P.11A-8

).

• Side Under Cover Installation (Refer to GROUP 51, 

Under Cover 

P.51-11

).

AC306712AB

49 ± 9 N·m
36 ± 7 ft-lb

1

4

3

2

11 ± 1 N·m
98 ± 8 in-lb

12 ± 2 N·m
102 ± 22 in-lb

14 ± 1 N·m
120 ± 13 in-lb

44 ± 10 N·m
33 ± 7 ft-lb

49 ± 9 N·m
36 ± 7 ft-lb

49 ± 9 N·m
36 ± 7 ft-lb

REMOVAL STEPS

1.

HARNESS BRACKET

2.

CONNECTOR BRACKET

<<A>>

3.

GENERATOR ASSEMBLY

•

TIMING BELT LOWER COVER 
(REFER TO GROUP 11A, TIMING 
BELT 

P.11A-49

).

4.

GENERATOR MOUNTING 
BRACKET

REMOVAL STEPS (Continued)

CHARGING SYSTEM

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ENGINE ELECTRICAL

16-16

REMOVAL AND INSTALLATION <3.8L ENGINE>

M1161001400601

REMOVAL SERVICE POINT

.

<<A>> A/C COMPRESSOR ASSEMBLY REMOVAL
Remove the compressor from the compressor bracket with the 
hose still attached.
NOTE: Place the removed A/C compressor where it will not be 
a hindrance when removing and installing the generator, and 
secure it with a cord or wire.

.

Pre-removal and Post-installation Operation
• Under Cover Removal and Installation (Refer to GROUP 

51, Under Cover 

P.51-11

). 

• Side Under Cover Removal and Installation  (Refer to 

GROUP 51, Under Cover 

P.51-11

).

AC306926

49 ± 9 N·m
36 ± 7 ft-lb

1

2

3

4

5

AB

2

12 ± 2 N·m
102 ± 22 in-lb

REMOVAL STEPS

1.

GENERATOR DRIVE BELT

2.

GENERATOR CONNECTOR

3.

A/C COMPRESSOR ASSEMBLY 
CONNECTOR

<<A>>

4.

A/C COMPRESSOR ASSEMBLY

<<B>>

5.

GENERATOR ASSEMBLY

REMOVAL STEPS (Continued)