1999 MITSUBISHI LANCER EVOLUTION VI bulb

MPI – Troubleshooting13-21
INSPECTION PROCEDURE 3
The engine warning lamp does not illuminate right after
the ignition switch is turned to the ON position.
Probable cause
For checking for burnt-out bulb, the engine-ECU causes the engine warning lamp
to illuminate for five seconds immediately after the ignition switch is turned to ON.
If the engine warning lamp does not illuminate immediately after the ignition switch
is turned to ON, one of the malfunctions listed at right has probably occurred.
Burnt-out bulb of the engine warning lamp

Defective engine warning lamp circuit

Malfunction of the engine-ECU
MUT-II Data list
16 engine-ECU power supply voltage (Refer to P.13-57)NGCheck the engine-ECU power supply and earth circuit.
(Refer to P.13-53, INSPECTION PROCEDURE 45.)
OK
Measure at the engine-ECU connector B-60.

Disconnect the connector, and measure at the harness side.

Earth the terminal No.36. (Ignition switch: ON)
OK:The engine warning lamp illuminates.OKCheck the following
connector: B-60NG
Repair
OK
Check trouble symptom.
NG
Replace the engine-ECU.
NG
Check for burnt-out bulb.NG
Replace
OK
Measure at the combination meter connector B-08.

Disconnect the connector, and measure at the harness side.

Voltage between 42 and earth (Ignition switch: ON)
OK:System voltageNGCheck the engine warning lamp power supply circuit, and repair
if necessary.
OK
Check the following connectors:
B-08, B-65, B-60NG
Repair
OK
Check trouble symptom.NGCheck the harness wire between combination meter and engine-
ECU connector, and repair if necessary.
INSPECTION PROCEDURE 4
The engine warning lamp remains illuminating and never
goes out.
Probable cause
In cases such as the above, the cause is probably that the engine-ECU is detecting
a problem in a sensor or actuator, or that one of the malfunctions listed at right has
occurred.
Short-circuit between the engine warning lamp and
engine-ECU

Malfunction of the engine-ECU
MUT-II Self-Diag code
Are diagnosis codes displayed?Ye sRefer to P.13-8, INSPECTION CHART FOR DIAGNOSIS CODES.
No
Measure at the combination meter connector B-08.

Disconnect the connector, and measure at the harness side.

Disconnect the engine-ECU connector

Continuity between 53 and earth
OK:No continuityNGCheck the harness wire between combination meter and engine-
ECU connector, and repair if necessary.
OK
Replace the engine-ECU.

REAR AXLE – Troubleshooting 27-22
INSPECTION PROCEDURE 3
AYC warning lamp does not light up when the ignition key
is turned to “ON” (engine stationary).
Probable cause
The lamp power supply circuit is probably open-circuited, lamp bulb is out, or the
circuit between AYC warning lamp and AYC-ECU or AYC-ECU itself is defective.
Blown fuse

AYC warning lamp out

Defective harness or connector

Defective AYC-ECU
NG
Check and repair the harness between
ignition switch (IG
2) and AYC warning
lamp.
OK
Check the trouble symptom.
OK
Replace combination meter.
NG
Check the harness between AYC
warning lamp and AYC-ECU.NG
Repair
OK
Check the trouble symptom.OK
Replace AYC-ECU.
OK
Check the following connectors:
B-96, B-94, B-08NG
Repair
OK
Measure at B-96 AYC-ECU connector.

Disconnect the connector and
measure at the harness side.

Ignition switch: ON

Warning lamp when 36 is grounded
to body
OK:Lit upNGCheck the lamp bulb.NG
Replace
Measure at B-08 combination meter
connector.

Disconnect the connector and
measure at the harness side.

Ignition switch: ON

Voltage across 48 and body ground
OK:Symptom voltageNGCheck the following connectors:
B-08, B-74, B-76NG
Repair

SRS – Troubleshooting52B-12
Code No.43 SRS warning lamp drive circuit system
(Lamp does not illuminate.)Probable cause
This diagnosis code is output when an open circuit occurs for a continuous period
of 5 seconds while the SRS-ECU in monitoring the SRS warning lamp and the lamp
is OFF (transistor OFF).
However, if this code is output due to an open circuit, if the vehicle condition returns
to normal, this diagnosis code No.43 will be automatically erased, and the SRS warning
lamp will return to normal.
Malfunction of wiring harnesses or connectors

Blown bulb

Malfunction of SRS-ECU

Malfunction of combination meter
OK
Replace the combination
meter.
NG
Check the harness wire
between the SRS-ECU
and ignition switch (IG
1).NG
Repair
OK
Check trouble symptoms.
OK
Check the following
connectors:
B-51, B-09, B-08, B-75,
B-76NG
Repair
NG
Check the harness wire between the SRS-ECU and earth, and
repair if necessary.
OK
Check trouble symptoms.
Measure at SRS check harness
connector (5).

Disconnect SRS-ECU
connector B-51.

Connect SRS check
harness connector (3).

Continuity between
terminals (20)
OK:ContinuityNGCheck the following
connectors:
B-51, B-78, B-80NG
Repair
OK
Measure at SRS check harness connector (5).

Disconnect SRS-ECU connector B-51.

Connect SRS check harness connector (3).

Ignition switch: ON

Connect terminal (15) to the body earth.
OK:Lamp illuminatesNGBlown bulb inspectionNG
Repair
OK
Replace the SRS-ECU.
SRS check harness
(MB991613)
3
5
Code No.43 SRS warning lamp drive circuit system
(Lamp does not switch off.)
Probable cause
This diagnosis code is output when a short to earth occurs in the harness between
the lamp and the SRS-ECU while SRS-ECU is monitoring the SRS warning lamp
and the lamp is ON.
Malfunction of wiring harnesses or connectors

Malfunction of SRS-ECU

Malfunction of combination meter
SRS warning lamp inspection

Ignition switch: ON

Does lamp switch off when SRS-ECU connector B-51 is
disconnected?NoCheck the following
connectors:
B-51, B-09NG
Repair
Ye s
Replace the SRS-ECU.
OK
Check trouble symptoms.
NG
Check the harness wire
between the SRS-ECU
and combination meter,
and repair if necessary.

CHASSIS ELECTRICAL – Ignition Switch54-7
INSPECTION PROCEDURE FOR TROUBLE SYMPTOMS
Inspection Procedure 1
Key hole illumination lamp remains illuminated.
Probable cause
The cause is probably a harness short or a defective ETACS-ECU or buzzer ECU.
Malfunction of harness wire

Malfunction of ETACS-ECU

Malfunction of buzzer ECU
Disconnect the ignition key cylinder illumination lamp connector
B-84 and measure the continuity:

Between 4 and body earth
OK:ConductingNGCheck the harness wire between the ignition key cylinder illumination
lamp and junction block, and repair if necessary.
OK
Replace the ETACS-ECU or buzzer ECU.
Inspection Procedure 2
Even if driver’s side door is opened, key hole illumination
lamp does not illuminate.
Probable cause
The cause is probably a defective key hole illumination lamp circuit system, or a
defective driver’s side door switch input circuit system if the ignition key reminder
warning buzzer is also faulty.
Malfunction of driver’s side door switch

Malfunction of bulb

Malfunction of connector

Malfunction of harness wire

Malfunction of ETACS-ECU

Malfunction of buzzer ECU
OK
Replace ETACS-ECU or buzzer ECU.

MUT-II Pulse check
Driver’s side door switch input signal
OK:The MUT-II buzzer sounds once
when the driver’s side door switch
is ON.NG
Driver’s side door switch input circuit
system inspection (Refer to Inspection
Procedure 6 on P.54-10.)
OK
Disconncet the key hole illumination
lamp connector B-84, and measure at
the harness side.

Voltage between 3 and body earth
OK:System voltageNGCheck the following connectors:
B-49, B-75, B-73NG
Repair
OK
Check trouble symptom.
NG
Check the harness wire between
ETACS-ECU or buzzer ECU and fusible
link 1, and repair if necessary.
Vehicle with buzzer ECU
Remove ETACS-ECU or buzzer ECU
from junction block, and measure at the
junction block connector B-79

Ignition key cylinder illumination
lamp connector connected

Voltage between 12 and body earth
OK:System voltage
OK
OK
NG
Check the following connectors:
B-84, B-49, B-75, B-73NG
Repair
OK
Check trouble symptom.
Check the harness wire between the
ignition key cylinder illumination lamp
and fusible link 1, and repair if neces-
sary.
NG

CHASSIS ELECTRICAL – Ignition Switch54-11
IGNITION SWITCH
REMOVAL AND INSTALLATION
123 4 5
67
8 9
10 11
12
9
ETACS-ECU or buzzer ECU removal
steps
1. Cowl side trim (R.H.)
2. Junction block
3. Buzzer control unit ETACS-ECUIgnition switch removal steps
4. Hood lock release handle
5. Driver side lower panel
6. Column cover, lower
7. Column cover, upper
8. Illumination ring or ring cover
9. Key hole illumination lamp bulb
A10. Steering lock cylinder
11. Key reminder switch
12. Ignition switch

CHASSIS ELECTRICAL – Headlamp54-32
HEADLAMP
SERVICE SPECIFICATIONS
ItemsStandard valueLimit
Headlamp
aiming
High
beam
Vertical direction25’ (22 mm) below horizontal line–
aiming
[Parenthe-
sized are
allowable
beam
Horizontal
directionLeft head-
lampParallel to direction of vehicle travel–
allowable
beam axis
deviations 3
m ahead of
Right head-
lamp15’ (13 mm) leftward from vertical line (V)–
m ahead of
headlamp.]Low
beam
Vertical direction25’ (22 mm) below horizontal line–p]beam
Horizontal directionPosition where 15* rising section intersects
vertical line (V)–
Headlamp intensity cd (Center of high-beam high intensity
zone)–15,000 or
more per
light
Cautions in Handling Headlamp Assembly
Each headlamp assembly has a plastic outer lens on. Observe the do’s and don’ts below when
handling the headlamps.

Do not leave the headlamps lit for longer than 3 minutes with a protective cover on.

Do not mask the outer lens surface by taping or in any other way.

Do not scrub the outer lens surface with a pointed tool.

Use the designated wax remover for cleaning the outer lens surface. Rinse it thoroughly.

Use the designated genuine bulbs.
SPECIAL TOOLS
ToolNumberNameUse
MB991502MUT-II sub as-
semblyETACS-ECU input signal checking

CHASSIS ELECTRICAL – Headlamp54-35
Standard values:
Vertical direction25’ (22 mm) below hori-
zontal line (H)
Horizontal
directionLeft headlampParallel to direction of
vehicle travel
Right head-
lamp15’ (13 mm) leftward
from vertical line (V)
Caution:
(1) Perform aiming adjustments, one light at a time,
with the other headlamp disconnected so as not
to be lit unless circumstances compel otherwise.
When reconnecting the headlamps, be careful not
to upset their aim. Do not leave the headlamps
on for any longer than 3 minutes if their outer
lenses are covered with a surface covering
impervious to light.
(2) Do not mask the outer lenses by taping or in any
other way.
(3) Aiming adjustment must be completed with the
aiming adjustment screws turned in the tightening
direction.
INTENSITY MEASUREMENT
1. Position the tester so that its light sensor faces each
headlamp center to center at the appropriate distance
shown.
2. Maintain an engine speed of 2,000 r/minto keep the battery
in the charged condition.
3. Check that the high-beam headlamp intensity at the center
of the high intensity zone satisfies the limit value.
Limit: 15,000 cd or more per headlamp
Caution
(1) Perform intensity measurement, one headlamp at
a time, with the low-beam lamp and the other
headlamp disconnected from the battery unless
circumstances compel otherwise. Do not leave
the headlamps on for any longer than 3 minutes
if their outer lenses are covered with a surface
covering impervious to light.
(2) Do not mask the outer lens surfaces by taping
or in any other way.
HEADLAMP BULB REPLACEMENT
1. Disconnect the connector.
2. Remove the socket cover.
3. Unhook the spring which secures the bulb, and then
remove the bulb.
Caution
Do not touch the surface of the bulb with hands or
dirty gloves. If the surface does become dirty, clean
it with alcohol or thinner, and let it dry thoroughly
before installing.

Lamp center
Vertical direction
Vertical direction High
intensity
zone
center
(optical
axis)
High
intensity
zone
center
(optical
axis)High intensity zone
High intensity zoneLamp center V
H
V
H
Screen type tester: 3 m Converging
lens type tester: 1 m
Spring

CHASSIS ELECTRICAL – HeadlampCHASSIS ELECTRICAL – Headlamp54-36
4. After the bulb is replaced, reinstall the socket cover with
the TOP mark facing upward.
NOTE
To prevent the clouding of lens and ingress of water into
the lamp unit, install the socket cover correctly.
POSITION LAMP BULB REPLACEMENT
Remove the position lamp by turning it together with the lamp
socket, then replace its bulb.
HEADLAMP AND FRONT TURN-SIGNAL LAMP
REMOVAL AND INSTALLATION
CAUTION: SRS
Before removal of air bag module and clock spring, refer to GROUP 52B – SRS Service Precautions and Air
Bag Module and Clock Spring.
5 Nm
2 3
4
5 Nm
1
1. Column switchRemoval steps
A2. Front turn-signal lamp
3. Radiator grille
A4. Headlamp
Position lamp connector