Mitsubishi Lancer Evolution VI. Manual — part 100
CHASSIS ELECTRICAL –
Battery
54-4
CHARGING
1.
When charging a battery while still installed in the vehicle,
disconnect the battery cables to prevent damage to
electrical parts.
2.
The current normally used for charging a battery should
be approximately 1/10th of the battery capacity.
3.
When performing a quick-charging due to lack of time,
etc., the charging current should never exceed the battery
capacity as indicated in amperes.
4.
Determining if charging is completed.
(1) If the specific gravity of the battery fluid reaches
1.250 – 1.290 and remains constant for at least one
hour.
(2) If the voltage of each cell reaches 2.5– 2.8 V and
remains constant for at least one hour.
Caution
1.
Be careful since the battery fluid level may rise
during charging.
2.
Keep all sources of fire away while charging
because there is a danger of explosion.
3.
Be careful not to do anything that could generate
sparks while charging.
4.
When charging is completed, replace the battery
caps, pour clean water over the battery to remove
any sulfuric acid and dry.
CHASSIS ELECTRICAL –
Battery
54-5
BATTERY TESTING PROCEDURE
TEST STEP
(1) Turn headlamps on for 15 seconds.
(2) Turn headlamps off for 2 minutes to allow battery voltage to
stabilize.
(3) Disconnect cables.
Read open circuit voltage.
OK: Open circuit voltage is more than 12.4 V
NG
Charge battery at 5 amps. (see LOAD TEST RATE CHART)
Retest
OK
(1) Connect a load tester to the battery.
(2) Load the battery at the recommended discharge rate (see LOAD
TEST RATE CHART).
(3) Read voltage after 15 seconds, then remove load.
(4) Compare the measured value with the minimum voltage (see
LOAD TEST CHART).
OK: Higher than minimum voltage
NG
Replace battery
OK
Normal
LOAD TEST RATE CHART
Battery type
28B19L
34B19L
44B20L
95D31L
55D23L
55B24L
Charging time when fully discharged h
[5-amp rated current charging]
5
6
7
13
10
8
Load test (Amps)
120
130
160
310
170
170
LOAD TEST CHART
Temperature
_
C
21 and
above
16 to
20
10 to
15
4 to 9
–1 to 3
–7 to
–2
–12 to
–8
–18 to
–13
Minimum voltage V
9.6
9.5
9.4
9.3
9.1
8.9
8.7
8.5
CHASSIS ELECTRICAL –
Ignition Switch
CHASSIS ELECTRICAL –
Ignition Switch
54-6
IGNITION SWITCH <EXCEPT EVOLUTION-VI WITH
IMMOBILIZER SYSTEM>
SPECIAL TOOL
Tool
Number
Name
Use
MB991502
MUT-
II
sub
assembly
ETACS-ECU input signal checking
TROUBLESHOOTING
DIAGNOSIS FUNCTION
INPUT SIGNAL INSPECTION POINTS <VEHICLES
WITH ETACS-ECU>
Refer to Group 00 – How to Use Troubleshooting / Inspection
Service Points.
INSPECTION CHART FOR TROUBLE SYMPTOMS
Trouble symptoms
Inspection
procedure
Reference page
Communication with
MUT
II
is impossible
Key hole illumination lamp remains illuminated.
1
54-7
MUT
-II
is impossible.
Even if driver’s side door is opened, key hole
illumination lamp does not illuminate.
2
54-7
While key hole illumination lamp is illuminated,
ignition key is turned to the ON position but key hole
illumination lamp does not switch off. (However, it
switch off after 10 seconds.)
3
54-8
Key reminder warning
buzzer system
While the key reminder warning buzzer is sounding,
the ignition key is turned to the ON position but the
sound dose not stop. (However, it stops when the
driver’s side door is closed.)
3
54-8
The key reminder warning buzzer dose not stop
sounding even if the key is removed. (However, it
stops when the driver’s side door is closed.)
4
54-9
The key reminder warning buzzer does not sound
ever if the driver’s side door is opened while the key
is still inserted. (However, the ignition key should be
in the OFF position.)
5
54-10
NOTE
If every input signal can not be checked with the MUT-
II
, a diagnosis circuit system failure is probably
the cause. <Vehicles with ETACS-ECU>
CHASSIS ELECTRICAL –
Ignition Switch
54-7
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.
D
Malfunction of harness wire
D
Malfunction of ETACS-ECU
D
Malfunction of buzzer ECU
Disconnect the ignition key cylinder illumination lamp connector
B-84 and measure the continuity:
D
Between 4 and body earth
OK: Conducting
NG
Check 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.
D
Malfunction of driver’s side door switch
D
Malfunction of bulb
D
Malfunction of connector
D
Malfunction of harness wire
D
Malfunction of ETACS-ECU
D
Malfunction of buzzer ECU
OK
Replace ETACS-ECU or buzzer ECU.
<Vehicles with ETACS-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.
D
Voltage between 3 and body earth
OK: System voltage
NG
Check the following connectors:
B-49, B-75, B-73
NG
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
D
Ignition key cylinder illumination
lamp connector connected
D
Voltage between 12 and body earth
OK: System voltage
OK
OK
NG
Check the following connectors:
B-84, B-49, B-75, B-73
NG
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
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