2005 MITSUBISHI LANCER engine

IGNITION SYSTEM
ENGINE ELECTRICAL16-35
WAVEFORM OBSERVATION POINTS
Point A: The height, length and slope of the spark line show the following trends (Refer to abnormal
waveform examples, 1, 2, 3 and 4).
Point B: Number of vibration in reduction vibration section (Refer to abnormal waveform example 5)
Point C: Number of vibrations at beginning of dwell section (Refer to abnormal waveform example 5)
Point D: Ignition voltage height (distribution per each cylinder) shows the following trends.
AKX01275
kV
Secondary ignition
voltage wave pattern
0
2NO. 1 cylinder
NO. 3 cylinder
ignition noise
Newtral sectionNO. 4 cylinderNO. 2 cylinder
ignition noise
Time
AC
Spark line Plug gap Condition of
electrodeCompression
force Concentration
of air mixtureIgnition
timingSpark plug
cable
Length Long Small Normal Low Rich Advanced Leak
Short Large Large wear High Lean Retarded High
resistance
Height High Large Large wear High Lean Retarded High
resistance
Low Small Normal Low Rich Advanced Leak
Slope Large Plug is fouled
−− −−
Number of vibrations Coil and condenser
3 or more Normal
Except above Abnormal
Number of vibrations Coil
5 − 6 or higher Normal
Except above Abnormal
Ignition
voltagePlug gap Condition of
electrodeCompression
forceConcentration
of air mixtureIgnition
timingSpark plug
cable
High Large Large wear High Lean Retarded High
resistance
Low Small Normal Low Rich Advanced Leak

IGNITION SYSTEM
ENGINE ELECTRICAL16-36
EXAMPLES OF ABNORMAL
WAV E F O R M S
Example 1
•Wave characteristics
Spark line is high and short.
•Cause of problem
Spark plug gap is too large.
Example 2
•Wave characteristics
Spark line is low and long, and is sloping.
Also, the second half of the spark line is distorted.
This could be a result of misfiring.
•Cause of problem
Spark plug gap is too small.Example 3
•Wave characteristics
Spark line is low and long, and is sloping.
However, there is almost no spark line
distortion.
•Cause of problem
Spark plug gap is fouled.
Example 4
•Wave characteristics
Spark line is high and short.
Difficult to distinguish between this and abnormal
waveform example 1.
•Cause of problem
Spark plug cable is nearly falling off (Causing a
dual ignition).
Example 5
•Wave characteristics
No waves in wave damping section.
•Cause of problem
Layer short in ignition coil.
AKX00280
AKX00281
AKX00282
AKX00283
AKX00284

IGNITION SYSTEM
ENGINE ELECTRICAL16-37
IGNITION COIL RELAY CHECKM1163006500018
AC301727
2 1
3 4
AC304311AB
Battery
Ignition coil relay
Battery
voltageTerminal No.to
be connected to
testerContinuity test
results
Not applied 1 − 4 Open circuit
Connect
terminal
No.2 and
battery (+)
terminal.
Connect
terminal
No.3 and
battery (−)
terminal.1 − 4 Less than 2 ohms

IGNITION SYSTEM
ENGINE ELECTRICAL16-38
IGNITION COIL
REMOVAL AND INSTALLATION <4G1>M1163004000404
AC303965AB
11
5 2
2
10 ± 2 N·m
10 ± 2 N·m
25 ± 5 N·m
3
4
4
Removal steps
1. Ignition coil connector
2. Spark plug cable
3. Accelerator cable support clamp
4. Ignition coil
5. Spark plugRemoval steps (Continued)

IGNITION SYSTEM
ENGINE ELECTRICAL16-39
REMOVAL AND INSTALLATION <4G6>M1163004000415
AC301786
10 ± 2 N·m
25 ± 4 N·m
54
22
3 34
AB
1
3.0 ± 0.5 N·m
Removal steps
1. Rocker cover centre cover
2. Ignition coil connector
3. Spark plug cable4. Ignition coil
5. Spark plugRemoval steps (Continued)

IGNITION SYSTEM
ENGINE ELECTRICAL16-40
CAMSHAFT POSITION SENSOR
REMOVAL AND INSTALLATIONM1163003400443
AC303970AB
2
3
8.8 ± 1.0 N·m
N
1 <4G1>
AC301556
N
1 2
3
8.8 ± 1.0 N·m
AC
<4G6>
Removal steps
1. Camshaft position sensor
connector2. Camshaft position sensor
3. O-ringRemoval steps (Continued)

IGNITION SYSTEM
ENGINE ELECTRICAL16-41
CRANKSHAFT POSITION SENSOR
REMOVAL AND INSTALLATION <4G1>
M1163003500439
Pre-removal and Post-installation Operation
•Valve Timing Belt Removal and Installation (Refer to
GROUP 11A P.11A-33).
AC208380AB
12
11 ± 1 N·m
8.8 ± 1.0 N·m
Removal steps
1. Engine crank angle sensor
2. Crank angle sensor connector
bracket

IGNITION SYSTEM
ENGINE ELECTRICAL16-42
REMOVAL AND INSTALLATION <4G6>M1163003500440
REMOVAL SERVICE POINT
<> POWER STEERING OIL PUMP
ASSEMBLY REMOVAL
Remove the power steering oil pump assembly from
the bracket with the hose attached.
NOTE: Place the removed power steering oil pump
assembly in a place where it will not be a hindrance
when removing and installing and secure it with a
cord or wire.
Pre-removal and Post-installation Operation
•Valve Timing Belt Removal and Installation (Refer to
GROUP 11C P.11C-35).
AC301612
8.8 ± 1.0 N·m
8
8.8 ± 1.0 N·m
9
1
22 ± 4 N·m
4
2
3
49 ± 9 N·m49 ± 9 N·m5
22 ± 4 N·m
3.0 ± 0.5 N·m
6
7
AC
Removal steps
1. Power steering pressure switch
connector
2. A/C compressor connector
3. A/C compressor connector clamp
<>4. Power steering oil pump assembly
5. Power steering oil pump bracket6. Rocker cover centre cover
7. Engine crankshaft position sensor
connector
8. Engine crankshaft position sensor
9. Crankshaft position sensor
connector bracket Removal steps (Continued)