2005 MITSUBISHI LANCER Camshaft position sensor

16-1
GROUP 16
ENGINE
ELECTRICAL
CONTENTS
CHARGING SYSTEM . . . . . . . .
16-2
GENERAL INFORMATION . . . . . .
16-2
SERVICE SPECIFICATIONS. . . . .16-3
SPECIAL TOOL . . . . . . . . . . . . . . .16-3
ON-VEHICLE SERVICE. . . . . . . . .16-3
ALTERNATOR OUTPUT LINE VOLTAGE
DROP TEST . . . . . . . . . . . . . . . . . . . . . 16-3
OUTPUT CURRENT TEST . . . . . . . . . . 16-5
REGULATED VOLTAGE TEST . . . . . . . 16-7
WAVEFORM CHECK USING AN
OSCILLOSCOPE . . . . . . . . . . . . . . . . . . 16-9
ALTERNATOR ASSEMBLY . . . . .16-12
REMOVAL AND INSTALLATION
<4G1> . . . . . . . . . . . . . . . . . . . . . . . . . . 16-12
REMOVAL AND INSTALLATION
<4G6> . . . . . . . . . . . . . . . . . . . . . . . . . . 16-13
DISASSEMBLY AND REASSEMBLY . . 16-15
INSPECTION . . . . . . . . . . . . . . . . . . . . . 16-17
STARTING SYSTEM . . . . . . . . .16-19
GENERAL INFORMATION . . . . . .
16-19
SERVICE SPECIFICATIONS. . . . .16-20
STARTER MOTOR ASSEMBLY . .16-21
REMOVAL AND INSTALLATION
<4G1> . . . . . . . . . . . . . . . . . . . . . . . . . . 16-21
REMOVAL AND INSTALLATION
<4G6> . . . . . . . . . . . . . . . . . . . . . . . . . . 16-22
STARTER MOTOR ASSEMBLY
INSPECTION . . . . . . . . . . . . . . . . . . . . . 16-23
DISASSEMBLY AND REASSEMBLY . . 16-26
INSPECTION . . . . . . . . . . . . . . . . . . . . . 16-27
IGNITION SYSTEM . . . . . . . . . 16-30
GENERAL INFORMATION . . . . . .
16-30
SERVICE SPECIFICATIONS . . . . .16-31
SPECIAL TOOL . . . . . . . . . . . . . . .16-31
ON-VEHICLE SERVICE . . . . . . . . .16-32
IGNITION COIL (WITH BUILT-IN
POWER TRANSISTOR) CHECK . . . . . . 16-32
RESISTIVE CORD CHECK . . . . . . . . . . 16-32
SPARK PLUG CHECK AND
CLEANING <4G1> . . . . . . . . . . . . . . . . . 16-32
SPARK PLUG CHECK AND
CLEANING <4G6> . . . . . . . . . . . . . . . . . 16-33
CAMSHAFT POSITION SENSOR
CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . 16-33
CRANK ANGLE SENSOR CHECK . . . . 16-33
DETONATION SENSOR CHECK . . . . . 16-33
IGNITION SECONDARY VOLTAGE
WAVEFORM CHECK USING AN
OSCILLOSCOPE . . . . . . . . . . . . . . . . . . 16-33
IGNITION COIL RELAY CHECK . . . . . . 16-37
IGNITION COIL . . . . . . . . . . . . . . . .16-38
REMOVAL AND INSTALLATION
<4G1>. . . . . . . . . . . . . . . . . . . . . . . . . . . 16-38
REMOVAL AND INSTALLATION
<4G6>. . . . . . . . . . . . . . . . . . . . . . . . . . . 16-39
CAMSHAFT POSITION SENSOR .16-40
REMOVAL AND INSTALLATION . . . . . . 16-40
CRANKSHAFT POSITION SENSOR16-41
REMOVAL AND INSTALLATION
<4G1>. . . . . . . . . . . . . . . . . . . . . . . . . . . 16-41
REMOVAL AND INSTALLATION
<4G6>. . . . . . . . . . . . . . . . . . . . . . . . . . . 16-42
DETONATION SENSOR . . . . . . . .16-43
REMOVAL AND INSTALLATION . . . . . . 16-43

IGNITION SYSTEM
ENGINE ELECTRICAL16-30
IGNITION SYSTEM
GENERAL INFORMATIONM1163000100294
This system is equipped with two ignition coils (A and
B) with built-in power transistors for the No. 1 and
No. 4 cylinders and the No. 2 and No. 3 cylinders
respectively.
Interruption of the primary current flowing in the
primary side of ignition coil A generates a high
voltage in the secondary side of ignition coil A. The
high voltage thus generated is applied to the spark
plugs of No. 1 and No. 4 cylinders to generate
sparks. At the time that the sparks are generated at
both spark plugs, if one cylinder is at the
compression stroke, the other cylinder is at the
exhaust stroke, so that ignition of the compressed
air/fuel mixture occurs only for the cylinder which is
at the compression stroke.
In the same way, when the primary current flowing in
ignition coil B is interrupted, the high voltage thus
generated is applied to the spark plugs of No. 2 and
No. 3 cylinders.The engine-ECU or engine-A/T-ECU
turns the two power transistors inside the ignition
coils alternately on and off. This causes the primary
currents in the ignition coils to be alternately
interrupted and allowed to flow to fire the cylinders in
the order 1-3-4-2.
The engine-ECU or engine-A/T-ECU
determines which ignition coil should be controlled
by means of the signals from the camshaft position
sensor which is incorporated in the camshaft and
from the crank angle sensor which is incorporated in
the crankshaft. It also detects the crankshaft position
in order to provide ignition at the most appropriate
timing in response to the engine operation
conditions. It also detects the crankshaft position in
order to provide ignition at the most appropriate
timing in response to the engine operation
conditions.
When the engine is cold or operated at high
altitudes, the ignition timing is slightly advanced to
provide optimum performance.
When the automatic transmission shifts gears, the
ignition timing is also retarded in order to reduce
output torque, thereby alleviating shifting shocks.
SYSTEM DIAGRAM
AK101074
Air flow sensor
<4G6> MAP sensor <4G1>
Intake air temperatur
sensor
Engine coolant
temperature sensor
Camshaft position
sensor
Crank angle sensor
Barometric pressure
sonsor <4G6>
Detonatoin sensor
Ignition switch-STEngine-A/T-
ECU Engine-ECU
Ignition coil B
Cylinder No.
23 4
AG
1 Spark plugIgnition coil AIgnition
switch
Battery

IGNITION SYSTEM
ENGINE ELECTRICAL16-33
SPARK PLUG CHECK AND CLEANING
<4G6>
M1163004300353
CAUTION
When pulling off the spark plug cable from the
plug always hold the cable cap, not the cable.
1. Remove the spark plug cables.
2. Remove the spark plugs.
CAUTION
•Do not attempt to adjust the gap of the iridium
plug.
•Always use a plug cleaner and finish cleaning
within 20 seconds. Do not use wire brushes.
Otherwise, the iridium and platinum tip may
be damaged.
3. Check the plug gap and replace if the limit is
exceeded.
Standard value: 1.0 − 1.1 mm
Limit: 1.3 mm
CAUTION
Be careful not to allow foreign matter in
cylinders.
4. Clean the engine plug holes.
5. Install the spark plugs.
CAMSHAFT POSITION SENSOR CHECKM1163004400219
Check the camshaft position sensor circuit if
self-diagnosis code No. P0340 is shown.
(Refer to GROUP 13A − Troubleshooting −
Inspection chart for diagnosis code <4G1> P.13A-15
or GROUP 13B − Troubleshooting − Inspection chart
for diagnosis code <4G6> P.13B-15 ).
CRANK ANGLE SENSOR CHECKM1163004500272
Check the crank angle sensor circuit if self-diagnosis
code No. P0335 is shown.
(Refer to GROUP 13A − Troubleshooting −
Inspection chart for diagnosis code <4G1> P.13A-15
or GROUP 13B − Troubleshooting − Inspection chart
for diagnosis code <4G6> P.13B-15 ).
DETONATION SENSOR CHECKM1163002900047
Check the detonation sensor circuit if self-diagnosis
code No. P0325 is shown.
(Refer to GROUP 13A − Troubleshooting −
Inspection chart for diagnosis code <4G1> P.13A-15
or GROUP 13B − Troubleshooting − Inspection chart
for diagnosis code <4G6> P.13B-15).
IGNITION SECONDARY VOLTAGE
WAVEFORM CHECK USING AN
OSCILLOSCOPE
M1163001700170
MEASUREMENT METHOD
1. Clamp the secondary pickup around the spark
plug cable.
NOTE: .
•The peak ignition voltage will be reversed
when the spark plug cables No. 2 and No. 4,
or No. 1 and No. 3 cylinders are clamped.
•Because of the two-cylinder simultaneous
ignition system, the waveforms for two
cylinders in each group appear during
waveform observation (No. 1 cylinder - No. 4
cylinder, No. 2 cylinder - No. 3 cylinder).
However, waveform observation is only
applicable for the cylinder with the spark plug
cable clamped by the secondary pickup.
•Identifying which cylinder waveform is
displayed can be difficult. For reference,
remember that the waveform of the cylinder
attached to the secondary pickup will be
displayed as stable.
2. Clamp the spark plug cable with the trigger
pickup.
NOTE: Clamp the trigger pickup to the same
spark plug cable clamped by the secondary
pickup.
AKX00383
AL
Platinum
tipIridium
tip

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)

SENSOR
COMPONENT LOCATIONS70-6
SENSOR
M1701000600567
NOTE: *: also equipped at the right side.Name Symbol Name Symbol
Air cleaner air flow sensor <4G6> F Output shaft speed sensor I
Air thermo sensor J Side impact sensor (Front) K
Camshaft position sensor D Side impact sensor (Rear) L
Engine control detonation sensor B Throttle body throttle sensor C
Engine control oxygen sensor (Front) G Vehicle speed sensor E
Engine control oxygen sensor (Rear) N Water temperature sensor unit H
Engine crank angle sensor A Wheel speed sensor (Front) M
Inlet manifold absolute pressure sensor
(incorporating intake air temperature
sensor) <4G1>C Wheel speed sensor (Rear) O
Input shaft speed sensor I
AC302006AB
BDCFEA
GHI
J
KL
MNO
*
***

SENSOR
COMPONENT LOCATIONS70-8
AC206644
AD
Camshaft position
sensor
D<4G1>
Rocker cover
AC302480AB
D
Camshaft position
sensor
Rocker cover
<4G6>
AC208654
AD
E
Vehicle speed
sensor
Idle speed
control servo

AC302481AB
FAir cleaner
assembly<4G6>Air cleaner
air flow sensor
AB
AC301754
G<4G1>
AC
Heat protector
Engine control
oxygen sensor (Front)
Engine control
oxygen sensor
(Front) connector
AC302482
G
AB
Heat protector
<4G6>
Engine control
oxygen sensor
(Front) connector
Engine control
oxygen sensor (Front)
AC206780AD
H
Rocker cover
<4G1>
Water temperature
sensor unit
AC302483AC302483
<4G6>H
AB
Rocker cover
Water temperature
sensor unit

ENGINE AND TRANSMISSION
CONFIGURATION DIAGRAMS80-9
ENGINE AND TRANSMISSION <4G1-MPI (LHD) > (CONTINUED)
NOTE: On A/T only, the standard routing positions
for the corrugated tube and wiring harness are
marked by*.
AC301128
B-118B-101 B-102
B-113
B-114 B-115 B-116B-117
Earth cable
Control wiring
harness
Connector colour
code
B : Black
BR : Brown
G : Green
GR : Gray
L : Blue
None : Milk white
O : Orange
R : Red
V : Violet
Y : Yellow
Connector
symbol
-101
thru
-118B
*
AC
9
10
11
13
B-103
B-104B-105
B-107
B-108
Battery wiring
harness
B-109
B-110 B-111
*
B-112
B-101 (2-BR) Emission solenoid valve (EGR system)
B-102 (4-GR) Inlet manifold absolute pressure sensor
B-103 (6-B) Throttle body idle speed control servo
B-104 (3-GR) Ignition coil 1
B-105 (2-B) Emission solenoid valve (Purge control
system)
B-107 (3-B) Camshaft position sensor
B-108 (3-GR) Output shaft speed sensor
B-109 (3-B) Input shaft speed sensor
B-110 (2-B) Back-up lamp switch
B-111 (2-B) Water temperature sensor unit
B-112 (1-B) Water temperature gauge unitB-113 (3-GR) Ignition coil 2
B-114 (1-B) A/C compressor
B-115 (1) Power steering fluid pressure switch
B-116 (3-B) Engine crank angle sensor
B-117 (2-GR) Engine control detonation sensor
B-118 (28-GR) ABS-ECU

ENGINE AND TRANSMISSION
CONFIGURATION DIAGRAMS80-11
ENGINE AND TRANSMISSION <4G1-MPI (RHD) > (CONTINUED)
NOTE: On A/T only, the standard routing positions
for the corrugated tube and wiring harness are
marked by*.
AC301131
B-117B-101 B-102
B-113 B-114 B-115 B-116
Earth cable
Control wiring
harness
Connector colour
code
B : Black
BR : Brown
G : Green
GR : Gray
L : Blue
None : Milk white
O : Orange
R : Red
V : Violet
Y : Yellow
Connector
symbol
-101
thru
-118B
*
AC
9
10
11
13
B-103
B-104B-105
B-107
B-108
Battery wiring
harness
B-109 B-110 B-111
*
B-112
B-118
B-101 (2-BR) Emission solenoid valve (EGR system)
B-102 (4-GR) Inlet manifold absolute pressure sensor
B-103 (6-B) Throttle body idle speed control servo
B-104 (3-GR) Ignition coil 1
B-105 (2-B) Emission solenoid valve (Purge control
system)
B-107 (3-B) Camshaft position sensor
B-108 (3-GR) Output shaft speed sensor
B-109 (3-B) Input shaft speed sensor
B-110 (2-B) Back-up lamp switch
B-111 (2-B) Water temperature sensor unit
B-112 (1-B) Water temperature gauge unitB-113 (3-GR) Ignition coil 2
B-114 (1-B) A/C compressor
B-115 (1) Power steering fluid pressure switch
B-116 (3-B) Engine crank angle sensor
B-117 (2-GR) Engine control detonation sensor
B-118 (28-GR) ABS-ECU