Ecu MITSUBISHI LANCER EVOLUTION 2007 Service Repair Manual

SRS - SRS-ECU52B-50
SRS AIR BAG CONTROL UNIT (SRS-ECU)
Caution
1. Disconnect the negative ( - ) battery terminal
and wait for 60 seconds or more before
starting work. Also, the disconnected
battery terminal should be insulated with
tape. (Refer to P.52B-3.)
2. Never attempt to disassemble or repair the
SRS-ECU. If faulty, just replace with a new
one.3. Do not drop or subject the SRS-ECU to
impact or vibration.
If denting, cracking, deformation, or rust are
found in the SRS-ECU, replace it with a new
one. Discard the old one.
4. After deployment of the air bags, replace
the SRS-ECU with a new one.
5. Never use an ohmmeter on or near the
SRS-ECU, and use only the special test
equipment described on P.52B-6.
REMOVAL AND INSTALLATION
Pre-removal Operation
DTurn Ignition Key to LOCK (OFF) Position.
DDisconnect the Negative ( - ) Battery Terminal.
12
4.9±1.0 N·m
4.9±1.0 N·m
4.9±1.0 N·m
3
Removal steps
DFront floor console
(Refer to GROUP 52A - Front floor
console.)
DRear heater duct B

1. SRS-ECU and SRS-ECU bracket
assembly
2. SRS-ECU
3. SRS-ECU bracketInstallation steps
3. SRS-ECU bracket
"AA2. SRS-ECU
1. SRS-ECU and SRS-ECU bracket
assembly
DRear heater duct B

DFront floor console
(Refer to GROUP 52A - Front floor
console.)
DNegative ( - ) battery terminal
connection
"BADPost-installation inspection

SRS - SRS-ECU52B-51
INSTALLATION SERVICE POINTS
"AASRS-ECU INSTALLATION
Caution
Be sure to install the SRS-ECU properly. Otherwise, the
SRS air bags do not activate, which results in serious
injury or death of vehicle’s occupants.
"BAPOST-INSTALLATION CHECK
1. Turn the ignition switch to ON.
2. Does the SRS warning lamp illuminate for about 7 seconds
and then go out.
Yes: The SRS warning lamp is working properly
No: Go to Troubleshooting. (Refer to P.52B-6.)
INSPECTION
1. Check the SRS-ECU and brackets for dents, cracks or
deformation.
2. Check connector for damage, and terminals for
deformation.
Caution
If a dent, crack, deformation or rust are present,
replace the SRS-ECU with a new one.
NOTE
To check the SRS-ECU in other items than described
above, go to Troubleshooting. (Refer to P.52B-6.)
SRS warning lamp

SRS -AirBagModuleandSeatBeltPre-tensioner
Disposal Procedures52B-69
(2) Connect deployment harnesses longer than 6 m to
each SRS air bag adapter harness and insulate the
connections with plastic tape.
Also, connect the deployment harness in the other
ends to connect (short-circuit). This prevents the
driver’s air bag module from accidental deployment
caused by static and etc.
(3) Touch the vehicle’s body with bare hands to discharge
static in you.
Caution
Never fail to do Step (3) in order to prevent
accidental deployment caused by static.
(4) Install a nut to the bolt behind the driver’s air bag
module and tie thick wire there for securing.
(5) Route the deployment harnesses connected to the
driver’s air bag module beneath an old tyre and wheel
assembly. Then, using the wire tied to the bolt, secure
the driver’s air bag module to the tyre and wheel
assembly with the deployment surface facing up.
(6) Place three old tyres without wheels on the tyre
secured with the driver’s air bag module.
SRS air bag
adapter harness
MR203491 or
MB628919Deployment
harnessShort-circuited
6 m or longer
Insulation tape
Driver’s air bag module
Deployment
harnesses
Tyres without wheels
Deployment harnesses

SRS -AirBagModuleandSeatBeltPre-tensioner
Disposal Procedures52B-71
(4) Release the secured connector of the steering
wheel - driver’s air bag module assembly to cut off
the connector from the harness with a nipper and
etc. Connect deployment harnesses to each of two
separated harnesses and cover the area with
insulation tape.
(5) Use a rope to tie the steering wheel - driver’s air bag
module assembly to secure old tyres with wheels.
(6) Route the deployment harness connected to driver’s
air bag module beneath old tyres with wheels. Then,
secure the steering wheel - driver’s air bag module
assembly with the deployment surface facing up.
(7) Place three old tyres without wheels on the tyre
secured with the driver’s air bag module.
(8) Separate the deployment harnesses as far from the
driver’s side air bag module as possible and connect
to the terminals of the battery removed from the
vehicle. Then deploy.
Caution
1) Before the deployment, see that no one is near
around the driver’s air bag module.
2) The deployment makes the inflator of the
driver’s air bag very hot. Before handling the
inflator, wait more than 30 minutes for cooling.
3) If the driver’s air bag module fails to deploy
although the procedure is respected, do not go
near the module. Contact your local
distributor.
(9) Discard the deployed air bag module as specified
in Deployed Air Bag Module Disposal Procedures.
(Refer to P.52B-75.)Deployment
harness
Short-circuited area Steering wheel - driver’s air bag
module assembly
Insulation tape
Steering wheel - driver’s air bag module assembly
Deployment
harness
Tyres without wheels
Deployment harnesses
Deployment harnesses

SRS -AirBagModuleandSeatBeltPre-tensioner
Disposal Procedures52B-72
Front passenger’s air bag module
(1) Remove the front passenger’s air bag module from
the vehicle. (Refer to P.52B-52.)
Caution
Once disconnected, both electrodes of the front
passenger’s air bag module connector short
automatically to prevent accidental deployment
caused by static etc. Still, in consideration of the
accidental deployment, store the air bag module
on flat place with deployment surface facing up.
Also, do not put anything on it.
(2) Connect deployment harness 6 m or longer with the
SRS air bag adapter harness respectively. Insulate
the connection with tape.
Also, connect the other ends of the deployment
harness each other to short, thereby preventing the
front passenger’s air bag from accidental deployment
caused by static etc.
(3) Route the SRS air bag adapter harness with the
deployment harnesses beneath an old tyre and wheel
assembly. Then, connect the harnesses to the front
passenger’s air bag module.
(4) Route a thick wire through the holes in the front
passenger’s air bag module bracket. With the
deployment surface facing up, secure the front
passenger’s air bag module to the old tyre and wheel
assembly.
Caution
1) The adapter harness below the wheel should
be loose. If it is too tight, the reaction when the
air bag deploys could damage the adapter
harness.
2) Place the connector of the SRS air bag adapter
harness so that it is not clamped by the tyre at
deployment.
(5) Put three old tyres without wheels on the tyre secured
to the front passenger’s air bag module. Secure all
the tyres with ropes (4 locations).
NOTE
The tyres must be bound because the passenger’s
air bag inflates more than the driver’s air bag.
SRS air bag
adapter
harness
MR686560Shorted
6 m long
or more Insulation tape
Deployment
harnesses
Front passenger’s air bag module
Deployment
harnesses
Tyres without wheels
Deployment harnesses

SRS -AirBagModuleandSeatBeltPre-tensioner
Disposal Procedures52B-74
(3) Route a thick wire through the holes in the seat belt
retractor bracket to secure at the top of the wheel
(convex part). (two locations)
(4) Connect the seat belt pre-tensioner connector to the
the SRS air bag adapter harness with the operation
harness attached.
(5) Pull out the seat belt outside the tyre.
Caution
Place the connector of the SRS air bag adapter
harness so that it is not clamped by the tyres at
deployment.
(6) Place an old tyre (without a wheel) on the tyre, which
the seat belt with pre-tensioner is secured on.
(7) Disconnect the deployment harness as far fromthe
seat belt pre-tensioner as possible and connect the
both terminals of the battery removed from the vehicle.
Then deploy.
Caution
1) Before the deployment, see that no one is near
the seat belt pre-tensioner.
2) Before handling the insulator, wait for a while
for cooling.
3) If the seat belt pre-tensioner fails to operate
although the procedure is respected, do not go
near the seat belt pre-tensioner. Contact your
local distributor.
(8) Discard the operated seat belt pre-tensioner
according to Disposal Procedure.(Refer to P.52B-75.)Seat belt pre-tensioner
Deployment harness
Old tyres without
wheels
Deployment harness

54A-2
CHASSIS
ELECTRICAL
CONTENTS
BATTERY 4..............................
SERVICE SPECIFICATION 4....................
ON-VEHICLE SERVICE 4......................
Fluid Level and Specific Gravity Check 4........
Charging 4.................................
Battery Testing Procedure 5...................
IGNITION SWITCH AND IMMOBILIZER
SYSTEM 6...............................
SPECIAL TOOLS 6............................
TROUBLESHOOTING 6........................
IMMOBILIZER-ECU CHECK 10.................
IGNITION SWITCH 11..........................
COMBINATION METER 14................
SERVICE SPECIFICATIONS 14.................
SEALANT 14..................................
SPECIAL TOOLS 15...........................
TROUBLESHOOTING 15.......................
ON-VEHICLE SERVICE 19.....................Speedometer Check 19......................
Tachometer Check 20........................
Fuel Gauge Unit Check 20....................
Engine Coolant Temperature Gauge
Unit Check 21...............................
COMBINATION METER 22.....................
HEADLAMP ASSEMBLY 24...............
SERVICE SPECIFICATIONS 24.................
TROUBLESHOOTING 24.......................
ON-VEHICLE SERVICE 24.....................
Headlamp Aiming 24.........................
Headlamp Intensity Measurement 28...........
Headlamp Bulb(low beam)Replacement28 ....
Headlamp Bulb(high beam)Replacement29 ...
Position Lamp Bulb Replacement29 ...........
Front Turn Signal Lamp Bulb Replacement29 ...
Headlamp Auto Cut Adjustment Procedure29 ...
HeadlampAuto Cut Function Check 29.........
HEADLAMP ASSEMBLY 30....................
CONTINUED ON NEXT PAGE

CHASSIS ELECTRICAL -Ignition Switch and Immobilizer System54A-7
INSPECTION PROCEDURES FOR EACH DIAGNOSIS CODE
Code No. 11 Problem related to communication with the
ignition keyProbable cause
When the ignition switch is at the ON position, the encrypted codes are not
transmitted from the ignition key to the immobilizer-ECU.DMalfunction of ignition key
DMalfunction of immobilizer-ECU
YES
NOCan other keys which have been registered be used to start
the engine?Replace the ignition key which cannot start the engine.
If code No. 12 is
output
Check the diagnosis codes.To inspection procedure 12 classified by diagnosis code (Refer
to P.54A-7.)
Replace the immobilizer-ECU.
Register the ignition key.
If code No. 11 is
output
Code No. 12 Ignition key is not registered, or encrypted
code from ignition key does not match.Probable cause
The ignition key has not been registered with the immobilizer-ECU.DThe ignition key has not been registered with the
immobilizer-ECU.
DMalfunction of immobilizer-ECU
OK
NG
Replace the immobilizer-ECU.
Check the trouble symptoms.Register the encrypted code.
INSPECTION CHART FOR TROUBLE SYMPTOMS
Trouble symptomInspection
procedure
No.Reference page
Communication with MUT-IIis not possible.–GROUP 13A -
Troubleshooting
Diagnosis code No. P1610 is generated by the engine-ECU.154A-8
The ignition keys cannot be registered using the MUT-II.254A-9
The engine does not start.(The engine cranks but does not fire.)354A-9
Immobilizer-ECU power supply and earth circuit system check454A-10

CHASSIS ELECTRICAL -Ignition Switch and Immobilizer System54A-8
INSPECTION PROCEDURES FOR TROUBLE SYMPTOMS
Inspection procedure 1
Diagnosis code No.1610 is generated by the
engine-ECU.
Probable cause
The cause is probably a problem with communication between the engine-ECU
and the immobilizer-ECU.DMalfunction of harness or connector
DMalfunction of engine-ECU
DMalfunction of immobilizer-ECU
DMalfunction of ignition key
DThe ignition key has not been registered with the
immobilizer-ECU.
OKImmobilizer-ECU power supply and earth circuit system check
(Refer to Inspection Procedure 4.)
OK
Check the trouble symptoms.
NGRepair
NGCheck the following connectors:C-202-1, C-202, C-130,
C-118
Repair
NGCheck the harness between the engine-ECU or and the
immobilizer-ECU, and repair if necessary.
NG
Replace the immobilizer-ECU.
Check the trouble symptoms.
Check the trouble symptoms.Replace the engine-ECU.OK
Is a normal diagnosis code output from the immobilizer-ECU?
NOTo Chart Classified by Diagnosis Codes (Refer to P.54A-6.) YES
NG

CHASSIS ELECTRICAL -Ignition Switch and Immobilizer System54A-9
Inspection procedure 2
The ignition keys cannot be registered using the MUT-II.
Probable cause
The ignition key has not been registered with the immobilizer-ECU. Or that there
is a problem with the immobilizer-ECU.DMalfunction of ignition key
DMalfunction of harness or connector
DMalfunction of immobilizer-ECU
Register the ignition key.
YES
NO YESIs a normal diagnosis code output?
NOCan none of the ignition keys be registered?Replace the ignition key that cannot be registered.
To Chart Classified by Diagnosis Codes (Refer to P.54A-6.)
OKImmobilizer-ECU power supply and earth circuit system check
(Refer to Inspection Procedure 4.)
NG
Replace the immobilizer-ECU.
Check the trouble symptoms.
Inspection procedure 3
The engine does not start. (The engine cranks but does
not fire.)
Probable cause
If the fuel injection does not operate, the cause is probably a problem with the
immobilizer-ECU, or it could also be a problem with the MPI system. If an
attempt has been made to start the engine with a key that has not been
properly registered, the above symptom is a sign of normal operation.DMalfunction of MPI system.
DMalfunction of immobilizer-ECU
NGBattery check (Refer to P.54A-4)
YES
NO
Refer to GROUP 13A - Troubleshooting.YES
NO
To Chart Classified by Diagnosis Codes (Refer to P.54A-6.)Is a normal diagnosis code output from the immobilizer-ECU?
OK
Voltage check during cranking
OK:8 V or higher
Is a normal diagnosis code output by the engine-ECU?
NG
OKImmobilizer-ECU power supply and earth circuit system check
(Refer to Inspection Procedure 4.)
NG
Replace the immobilizer-ECU.
Check the trouble symptoms.
Check the trouble symptoms.
NG
To inspection procedures if the engine does not fire (Refer to
GROUP 13A - Troubleshooting.)