Mitsubishi Evolution X. Manual - part 240

CHARGING SYSTEM

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ENGINE ELECTRICAL

16-13

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.

ABNORMAL WAVEFORMS

•

AK703778

Example 1
PROBABLE CAUSE: Open circuit or short circuit in diode

•

AK703780

Example 2
PROBABLE CAUSE: Open circuit in stator coil (In stator 
coil)

•

AK703781

Example 3
PROBABLE CAUSE: Open circuit in stator coil (Open cir-
cuit between stator coil and diode)

CHARGING SYSTEM

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ENGINE ELECTRICAL

16-14

•

AK703782

Example 4
PROBABLE CAUSE: Short circuit in stator coil

GENERATOR ASSEMBLY

REMOVAL AND INSTALLATION

M1161001402414

Pre-removal operation
• Engine Room Under Cover Front A, B, Engine Room 

Under Cover Center and Engine Room Side Cover (RH) 

Removal (Refer to GROUP 51, Under Cover 

P.51-16

).

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

Pulley 

P.11A-21

).

• Fan, Fan Motor and Fan Shroud Assembly Removal 

(Refer to GROUP 14, Radiator 

P.14-31

).

Post-installation operation
• Fan, Fan Motor and Fan Shroud Assembly Installation 

(Refer to GROUP 14, Radiator 

P.14-31

).

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

Pulley 

P.11A-21

).

• Drive Belt Tension Check (Refer to GROUP 11A, On-vehi-

cle Service 

− Drive Belt Tension Check 

P.11A-8

).

• Engine Room Under Cover Front A, B, Engine Room 

Under Cover Center and Engine Room Side Cover (RH) 

Installation (Refer to GROUP 51, Under Cover 

P.51-16

).

AC709276

1

2

5

4

3

AB

12 ± 2 N·m
102 ± 22 in-lb

44 ± 10 N·m
33 ± 7 ft-lb

44 ± 10 N·m
33 ± 7 ft-lb

23 ± 6 N·m
17 ± 4 ft-lb

Removal steps 

1.

A/C compressor and clutch 
assembly connector connection

<<

A

>>

>>

A

<<

2.

A/C compressor and clutch 
assembly

3.

Generator connector connection

4.

Generator terminal connection

<<

B

>>

5.

Generator assembly

CHARGING SYSTEM

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ENGINE ELECTRICAL

16-15

REMOVAL SERVICE POINTS

.

<<A>> A/C COMPRESSOR AND CLUTCH ASSEM-
BLY REMOVAL

1. With the hose installed, remove the A/C compressor and 

clutch assembly from the bracket.

2. Tie the removed A/C compressor and clutch assembly with 

a string at a position where it will not interfere with the 
removal and installation of the generator assembly.

.

<<B>> GENERATOR ASSEMBLY REMOVAL

Pull out the generator assembly upward.

INSTALLATION SERVICE POINT

.

>>A<< A/C COMPRESSOR AND CLUTCH ASSEM-
BLY INSTALLATION

AC506759

AE

1

2

3

A/C compressor 
and clutch assembly

Tighten A/C compressor and clutch assembly mounting bolts to 
the specified torque in the order of number shown in the illus-
tration.

Tightening torque: 23 

± 6 N⋅ m (17 ± 4 ft-lb)

Removal steps (Continued)

CHARGING SYSTEM

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ENGINE ELECTRICAL

16-16

DISASSEMBLY AND ASSEMBLY

M1161001600519

AK703147

1

3

4

5

6

7

8

9

10 11

12

13

14

16

3.9 ± 1.0 N·m
31 ± 12 in-lb

4.4 ± 1.0 N·m
39 ± 8 in-lb

AC

16 ± 2 N·m
12 ± 1 in-lb

73 ± 12 N·m
54 ± 8 ft-lb

2

15

2.0 ± 0.5 N·m
18 ± 4 in-lb

3.9 ± 1.0 N·m
31 ± 12 in-lb

2.0 ± 0.5 N·m
18 ± 4 in-lb

disassembly steps 

1. Cap

<<

A

>> >>

C

<< 2. Pulley

<<

B

>> >>

B

<< 3. Front bracket

4. Plate
5. Front bearing
6. Rotor
7. Rear bearing

<<

C

>>

8. Stator

9. Condenser assembly

<<

C

>> >>

A

<< 10. Regulator assembly

11. Brush
12. Rubber packing
13. Rectifier
14. Insulator
15. Bushing
16. Rear bracket

Required Special Tool:

• MB992226: Serration Socket

disassembly steps (Continued)