ECU MITSUBISHI LANCER EVOLUTION VI 1999 Owners Manual

BODY – Sunroof42-10
OK
Check trouble symptoms.
NG
Check the harness wire between igni-
tion switch (IG1) and sunroof-ECU, and
repair if necessary.
(2) NG
Check the following connectors:
B-44, B-76, B-73, D-10NG
Repair
OK
Check trouble symptoms.
NG
Check the harness wire between fusible
link No.1 and sunroof-ECU, and repair
if necessary.
(3) NG
Check the following connectors:
B-44, D-10NG
Repair
OK
Check trouble symptoms.
NG
Check the harness wire between sunroof-ECU and
the earth, and repair if necessary.
OK
Check sunroof switch continuity (Refer to P.42-17.)NG
Repair
OK
Measure at the sunroof-ECU connector D-10.

Disconnect the connector and measure at the harness side.

Continuity between 2 and body earth
OK:Continuity present when UP sunroof switch is on

Continuity between 3 and body earth
OK:Continuity present when CLOSE/DOWN sunroof switch
is on

Continuity between 4 and body earth
OK:Continuity present when OPEN sunroof switch is onNGCheck the following connectors:
D-10, D-07NG
Repair
OK
Check trouble symptoms.
NG
Check the harness wire between sun-
roof-ECU and sunroof switch, between
sunroof switch and the earth, and repair
if necessary.
OK
Check the sunroof motor. (Refer to P.42-17.)
Check limit switch continuity. (Refer to P.42-17.)NG
Replace
OK
Measure at the sunroof motor connector D-12.

Disconnect the connector and measure at the harness side.

Continuity between 4 and body earth
OK:ContinuityNGCheck the following connectors:
B-44, D-12NG
Repair
OK
Check trouble symptoms.
NG
Check the harness wire between sun-
roof motor and the earth, and repair
if necessary.
OK
Check the following connectors:
D-12, D-10NG
Repair
OK
Check trouble symptoms.NGCheck the harness wire between sun-
roof-ECU and sunroof motor.NG
Repair
OK
Replace the sunroof-ECU.
Measure at the sunroof-ECU connector D-10.

Disconnect the connector and measure at the harness side.

Ignition switch: ON
(1) Voltage between 5 and body earth
OK:System voltage
(2) Voltage between 7 and body earth
OK:System voltage
(3) Continuity between 18 and body earth
OK:Continuity(1) NGCheck the following connectors:
B-44, B-74, B-76, D-10NG
Repair

BODY – Sunroof42-11
Inspection Procedure 2
The motor does not reverse its direction when a load of
140 N or more is applied while the sunroof is closing.
Probable cause
The sunroof-ECU monitors the load conditions from the amount of current flowing
to the motor. If more than the constant amount of current is flowing, the direction
of motor operation is reversed to prevent jamming.
If the motor does not reverse direction even when an excessive load is being applied,
the cause may be a malfunction of the sunroof-ECU.
Malfunction of sunroof-ECU
Replace the sunroof-ECU.
Inspection Procedure 3
The timer does not operate for 30 seconds after the
ignition switch is turned to OFF.
Probable cause
The sunroof-ECU has a timer function which operates for 30 seconds after the ignition
switch is turned to OFF. If the timer does not operate, the cause may be a malfunction
of the sunroof-ECU or of the wiring harness or connector.
Malfunction of sunroof-ECU

Malfunction of wiring harness or connector
Measure at the sunroof-ECU connector
D-10.

Disconnect the connector and
measure at the harness side.

Voltage between 7 and body earth
OK:System voltageNGCheck the following connectors:
B-44, B-76, B-73NG
Repair
OK
Check trouble symptoms.
OK
Replace the sunroof-ECU.
Check the harness wire between fusible
link No.1 and sunroof-ECU, and repair
if necessary. NG
Inspection Procedure 4
Opening or closing of the sunroof is possible for 30
seconds after turning the ignition switch to OFF, but the
timer function is not extended when the driver’s side door
is opened within this period.
Probable cause
The sunroof timer operation period is extended when an on signal is output from
the driver’s-side door switch. Because of this, if the timer operation period is not
extended, the cause may be a malfunction of the door switch input circuit.
Malfunction of the front door switch (driver’s side)

Malfunction of sunroof-ECU

Malfunction of wiring harness or connector
Check front door switch (driver’s side)
continuity.NG
Replace
OK
Check the following connectors:
B-44, D-03, D-10NG
Repair
OK
Check trouble symptoms.NGCheck the harness wire between front
door switch (driver’s side) and sunroof-
ECU.NG
Repair
OK
Replace the sunroof-ECU.

BODY – Sunroof42-12
TERMINAL VOLTAGE CHART
Terminal No.Check ItemCheck ConditionNormal Condition
1Door switch inputDriver’s door switchON0 V
OFFSystem voltage
2Sunroof switch (up) inputSunroof switch
(up position)
ON0 V
(up position)
OFFSystem voltage
3Sunroof switch (close or
down) input
Sunroof switch (close
position or down position)
ON0 V
down) inputposition or down position)
OFFSystem voltage
4Sunroof switch (open
input)
Sunroof switch
(open position)
ON0 V
input)(open position)
OFFSystem voltage
5ECU power supplyIgnition switch: ONSystem voltage
6Motor output (When
sunroof is opening)While sunroof is opening or moving
downSystem voltage
Other than the above0 V
7Timer operation power
supplyAlwaysSystem voltage
8Motor output (When
sunroofis closing)
While sunroof is closing or moving upSystem voltage
sunroof is closing)
Other than the above0 V
9Limit switch 3 inputIn tilt up condition and fully-open
condition0 V
Other than the aboveSystem voltage
10Limit switch 1 inputIn tilt up conditionSystem voltage
In fully-closed and fully-open conditions0 V
In slide-closing condition0 V → System voltage →
0V.
12Limit switch 2 inputIn tilt up condition and fully-closed
conditionSystem voltage
Other than the above0 V
18EarthAlways0 V

BODY – Sunroof42-14
SUNROOF
REMOVAL AND INSTALLATION
Post-installation Operation
<Roof lid glass assembly, Sunroof assembly>

Sunroof Water Test (Refer to P.42-13.)

Sunroof Fit Adjustment (Refer to P.42-13.)
1 2
3
456
9 10
11 128
NOTE
:Clip position
7
6
Roof lid glass assembly removal
steps
A1. Side decoration cover
2. Roof lid glass assembly
Sunroof switch removal steps
3. Sunroof switch cover
4. Sunroof switch
Drain hose removal steps

Splash shield (Front drain hose)
5. Headlining
BB6. Drain hoseSunroof-ECU removal steps
5. Headlining
7. Sunroof-ECU
Sunroof motor removal steps
5. Headlining
CA8. Sunroof motor
Sunroof assembly removal steps
5. Headlining
6. Drain hose connection
9. Room lamp bracket
10. Sunroof switch bracket
11. Set bracket
12. Sunroof assembly

52B-1
SUPPLEMENTAL
RESTRAINT
SYSTEM (SRS)
CONTENTS
GENERAL INFORMATION 2. . . . . . . . . . . . . . . .
SRS SERVICE PRECAUTIONS 3. . . . . . . . . . .
SPECIAL TOOLS 5. . . . . . . . . . . . . . . . . . . . . . . .
TEST EQUIPMENT 5. . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 6. . . . . . . . . . . . . . . . . . . .
SRS MAINTENANCE 15. . . . . . . . . . . . . . . . . . .
POST-COLLISION DIAGNOSIS 19. . . . . . . . .
INDIVIDUAL COMPONENT SERVICE 22. . . WARNING/CAUTION LABELS 23. . . . . . . . . .
SRS AIR BAG CONTROL UNIT
(SRS-ECU) 24. . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR BAG MODULES AND CLOCK
SPRING 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR BAG MODULE DISPOSAL
PROCEDURES 32. . . . . . . . . . . . . . . . . . . . . . . .
Undeployed Air Bag Module Disposal
Procedures 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deployed Air Bag Module Disposal
Procedures 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CAUTION

Carefully read and observe the information in the SERVICE PRECAUTIONS (P.52B-3.) prior to any service.

For information concerning troubleshooting or maintenance, always observe the procedures in the Troubleshooting
(P.52B-6.) section.

If any SRS components are removed or replaced in connection with any service procedures, be sure to follow the
procedures in the INDIVIDUAL COMPONENT SERVICE section (P.52B-22.) for the components involved.

If you have any questions about the SRS, please contact your local distributor.

SRS – General Information52B-2
GENERAL INFORMATION
To improve safety, the SRS is available as optional
part.
The SRS consists of two air bag modules, SRS
air bag control unit (SRS-ECU), SRS warning lamp
and clock spring. One air bag is located in the
centre of the steering wheel and another above
the glove box. Each air bag has a folded air bag
and an inflator unit. The control unit under the floor
console monitors the system and has a safing G
sensor and an analog G sensor. The warning lamp
on the instrument panel indicates the operationalstatus of the SRS. The clock spring is installed
in the steering column.
Only authorized service personnel should do work
on or around the SRS components. Those service
personnel should read this manual carefully before
staring any such work. Extreme care must be used
when servicing the SRS to avoid injury to the service
personnel (by inadvertent deployment of the air
bags) or the driver (by rendering the SRS
inoperative).
Air bag module
(Driver’s side)Clock springAir bag module
(Front passenger’s side)
Diagnosis
connector
SRS-ECU
SRS warning lamp

SRS – SRS Service Precautions52B-3
SRS SERVICE PRECAUTIONS
1. In order to avoid injury to yourself or others
from accidental deployment of the air bag during
servicing, read and carefully follow all the
precautions and procedures described in this
manual.
2. Do not use any electrical test equipment on
or near SRS components, except those
specified on P.52B-5.
3. Never Attempt to Repair the Following
Components:

SRS air bag control unit (SRS-ECU)

Clock Spring

Air Bag Module
(Driver‘s side or front passenger’s side*)NOTE
*: Vehicles with front passenger’s air bag
If any of these components are diagnosed as
faulty, they should only be replaced, in
accordance with the INDIVIDUAL COM-
PONENT SERVICE procedures in this manual,
starting at page 52B-22.
4. After disconnecting the battery cable, wait 60 seconds
or more before proceeding with the following work.
The SRS system is designed to retain enough voltage
to deploy the air bag for a short time even after the
battery has been disconnected, so serious injury may
result from unintended air bag deployment if work
is done on the SRS system immediately after the
battery cables are disconnected.
5. Do not attempt to repair the wiring harness connectors
of the SRS. If any of the connectors are diagnosed as
faulty, replace the wiring harness. If the wires are
diagnosed as faulty, replace or repair the wiring harness
according to the following table.
Battery Insulating tape
SRS-ECU connector

SRS – SRS Service Precautions52B-4
SRS-ECU
terminal No.Harness connector
(No. of terminals,
colour)Destination of harnessCorrective action
1 to 421 pins, yellow––
5Body wiring harness → Clock spring → Air bag
module (Driver’s side)
Correct or replace each
wiring harness Replace
6
module (Driver’s side)wiring harness. Replace
clock spring.
7*Body wiring harness → Air bag module (Front
passenger’s side)
Correct or replace each
wiring harness
8*
passenger’s side)wiring harness.
9,10––
11Body wiring harness → Diagnosis connectorCorrect or replace each
wiring harness.
12––
13Body wiring harness → Junction block (fuse No.2)Correct or replace each
wiring harness
14Body wiring harness → Junction block (fuse No.4)
wiring harness.
15Body wiring harness → SRS warning lamp
16 to 19––
20Body wiring harness → EarthCorrect or replace each
wiring harness.
21––
NOTE
*: Vehicles with front passenger’s air bag
6. SRS components should not be subjected to hear over 93C, so remove the SRS-ECU, air bag
module and clock spring before drying or baking the vehicle after painting.
7. Whenever you finish servicing the SRS, check warning lamp operation to make sure that the system
functions properly. (Refer to P.52B-14.)
8. Make certain that the ignition switch is LOCK (OFF) position when the MUT-II is connected or
disconnected.
9. If you have any questions about the SRS, please contact your local distributor.
NOTE
SERIOUS INJURY CAN RESULT FROM UNINTENDED AIR BAG DEPLOYMENT, SO USE ONLY
THE PROCEDURES AND EQUIPMENT SPECIFIED IN THIS MANUAL.

SRS – Troubleshooting52B-6
TROUBLESHOOTING
STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING
Refer to GROUP 00 – How to Use Troubleshooting/Inspection Service Points.
DIAGNOSIS FUNCTION
DIAGNOSIS CODES CHECK
Connect the MUT-II to the diagnosis connector (16-pin) under the instrument under cover, then check
diagnosis codes.
(Refer to GROUP 00 – How to Use Troubleshooting/Inspection Service Points.)
ERASING DIAGNOSIS CODES
Connect the MUT-II to the diagnosis connector and erase the diagnosis code.
Caution
Turn off the ignition switch before connecting or disconnecting the MUT-II.
INSPECTION CHART FOR DIAGNOSIS CODES
Inspect according to the inspection chart that is appropriate for the malfunction code.
Code No.Diagnosis itemReference page
14Analog G-sensor system in the SRS-ECU52B-7
15,16Safing G-sensor system in the SRS-ECU52B-7
21, 22, 61, 62Driver’s side air bag module (squib) system52B-8
24, 25, 64, 65Front passenger’s side air bag module (squib) system52B-9
31, 32SRS-ECU capacitor system52B-9
34*Connector lock system52B-10
35SRS-ECU (deployed air bag) system52B-10
41*IG1 (A) power circuit system52B-10
42*IG1 (B) power circuit system52B-11
43SRS warning lamp drive circuit
system
Lamp does not illuminate.*52B-12
systemLamp does not switch off.52B-12
44SRS warning lamp drive circuit system52B-13
45SRS-ECU non-volatile memory (EEPROM) and A/D converter system52B-13
51, 52Driver’s side air bag module (squib ignition drive circuit) system52B-13
54, 55Front passenger’s side air bag module (squib ignition drive circuit) system52B-13
NOTE
(1) *: If the vehicle condition returns to normal, the diagnosis code will be automatically erased, and the SRS warning
lamp will return to normal.
(2) If the vehicle has a discharged battery it will store the fault codes 41 or 42. When these diagnosis codes are
displayed, check the battery.

SRS – Troubleshooting52B-7
INSPECTION PROCEDURE CLASSIFIED BY DIAGNOSIS CODE
Code No.14 Analog G-sensor system in the SRS-ECUProbable cause
The SRS-ECU monitors the output of the analog G-sensor inside the SRS-ECU.
It outputs this code when any of the following are detected.

When the analog G-sensor is not operating

When the characteristics of the analog G-sensor are abnormal

When the output from the analog G-sensor is abnormal
Malfunction of SRS-ECU
Replace the SRS-ECU.
Code No.15, 16 Safing G-sensor system in the SRS-ECUProbable cause
This code is output if there is a short or open circuit between the terminals of the
safing G-sensor inside the SRS-ECU.
The trouble causes for each diagnosis code No. are as follows.
Malfunction of SRS-ECU
Code No.Trouble symptom
15Short circuit in the safing G-sensor
16Open circuit in the safing G-sensor
Replace the SRS-ECU.