sensor MITSUBISHI LANCER 2005 User Guide

EXHAUST MANIFOLD
INTAKE AND EXHAUST15-10
REMOVAL SERVICE POINT
<> ENGINE CONTROL OXYGEN
SENSOR (FRONT) REMOVAL
Use special tool oxygen sensor wrench (MD998770)
to remove the engine control oxygen sensor (front).
INSTALLATION SERVICE POINT
>>A<< ENGINE CONTROL OXYGEN
SENSOR (FRONT) INSTALLATION
Use special tool oxygen sensor wrench (MD998770)
to install the engine control oxygen sensor (front).
INSPECTIONM1151003400543
Check the following points; replace the part if a
problem is found.
Exhaust Manifold Check
1. Check for damage or cracking of any part.2. Using a straight edge and a feeler gauge, check
for distortion of the cylinder head installation
surface.
Standard value: 0.15 mm or less
Limit: 0.20 mm
AC212566AC
MD998770
Engine control
oxygen sensor
(front)
AC212566AC
MD998770
Engine control
oxygen sensor
(front)

EXHAUST PIPE AND MAIN MUFFLER
INTAKE AND EXHAUST15-11
EXHAUST PIPE AND MAIN MUFFLER
REMOVAL AND INSTALLATIONM1151008700301
AC303694AB
1 3
50 ± 10 N·m
2
6
N
N
45
74
N89
59 ± 10 N·m 45 ± 5 N·m13 ± 2 N·m
45 ± 5 N·m
13 ± 2 N·m
9
<4G1>
AC303695AB
1 3
50 ± 10 N·m
2
6
N
N
45
74
N89
59 ± 10 N·m 45 ± 5 N·m13 ± 2 N·m
45 ± 5 N·m
13 ± 2 N·m
9
<4G6>
Exhaust main muffler removal
steps
1. Exhaust main muffler
3. Exhaust pipe gasket
4. Exhaust muffler hanger
Centre exhaust pipe removal
steps
2. Centre exhaust pipe
3. Exhaust pipe gasket
7. Exhaust pipe gasketFront exhaust pipe removal
steps
<> >>A<<5. Engine control oxygen sensor
(rear)
6. Front exhaust pipe
7. Exhaust pipe gasket
8. Exhaust pipe gasket
9. Exhaust muffler hanger

EXHAUST PIPE AND MAIN MUFFLER
INTAKE AND EXHAUST15-12
REMOVAL SERVICE POINT
<> ENGINE CONTROL OXYGEN
SENSOR (REAR) REMOVAL
Use special tool oxygen sensor wrench (MD998770)
to remove the engine control oxygen sensor (rear).
INSTALLATION SERVICE POINT
>>A<< ENGINE CONTROL OXYGEN
SENSOR (REAR) INSTALLATION
Use special tool oxygen sensor wrench (MD998770)
to install the engine control oxygen sensor (rear).
AC212566AD
MD998770
Engine control
oxygen sensor
(rear)
AC212566AD
MD998770
Engine control
oxygen sensor
(rear)

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

CHARGING SYSTEM
ENGINE ELECTRICAL16-13
REMOVAL AND INSTALLATION <4G6>M1161001400559
Pre-removal Operation
•Under Cover Removal
•Strut Tower Bar Removal (Refer to GROUP 42 P.42-9).
•Drive Belt Removal (Refer to GROUP 11C - Crankshaft
Pulley P.11C-16).
•Air Cleaner Assembly Removal (Refer to GROUP 15
P.15-3).Post-installation Operation
•Air Cleaner Assembly Installation (Refer to GROUP 15
P.15-3).
•Drive Belt Installation (Refer to GROUP 11C - Crankshaft
Pulley P.11C-16).
•Strut Tower Bar Installation (Refer to GROUP 42 P.42-9).
•Drive Belt Tension Adjustment (Refer to GROUP 11C -
On-vehicle Service P.11C-7).
•Under Cover Installation
AC303826
1
2
318 ± 3 N·m
AB
Removal steps
1. Shift cable connection<>2. shift cable and shift cable bracket
assembly
3. Vehicle speed sensor connectorRemoval steps (Continued)

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 ELECTRICAL16-31
IGNITION COIL SPECIFICATION
SPARK PLUG SPECIFICATIONS
SERVICE SPECIFICATIONS
M1163000300180
IGNITION COIL
SPARK PLUG
RESISTIVE CORD
SPECIAL TOOL
M1163000600288
Item Specification
Type Molded 2-coil
Items 4G1 4G66
NGK BKR6E-11 IGR6A11
DENSO K20PR-U11
−
CHAMPION RC8YC4
−
Item Standard value
Secondary coil resistance kΩ8.5 − 11 . 5
ItemsStandard value Limit
Spark plug gap mm 4G1 1.0 − 1.1
−
4G6 1.0 − 1.1 1.3
Item Standard value Limit
Resistance kΩ
−Maximum 19
Tool Number Name Use
MD998773 Detonation sensor
wrenchDetonation sensor
removal and installation

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)

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