battery MITSUBISHI TRITON 1997 Owner's Manual

SRS ± Sealant/Troubleshooting52B-6
SEALANT52400060015
ItemSpecified sealantRemark
Sensor cable3M ATD Part No. 8625 or equivalentRibbon sealer
TROUBLESHOOTING52400310097
STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING
Refer to GROUP 00 ± How to Use Troubleshooting/Inspection Service Points.
DIAGNOSIS FUNCTION52400320083
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
Refer to GROUP 00 ± How to Use Troubleshooting/Inspection Service Points.
INSPECTION CHART FOR DIAGNOSIS CODES52400330123
Inspect according to the inspection chart that is appropriate for the malfunction code.
Code No.Diagnosis itemReference page
11, 12, 13Front impact sensor system52B-7
21, 22Air bag module (squib) system52B-8
31, 32SDU capacitor system52B-9
33*Cranking signal system52B-10
34*Connector lock system52B-11
41*IG1 (A) power circuit system52B-11
42*IG1 (B) power circuit system52B-12
43SRS warning lamp drive circuit system
Lamp does not illuminate*52B-13
SRS warning lamp drive circuit system
Lamp does not switch off52B-14
44SRS warning lamp drive circuit system52B-14
45SDU non-volatile memory (EEPROM) and A/D converter system52B-14
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 ± Post-collision Diagnosis52B-19
POST-COLLISION DIAGNOSIS52400110154
To inspect and service the SRS after a collision (whether
or not the air bag has deployed), perform the following steps.
SRS DIAGNOSIS UNIT MEMORY CHECK
1. Connect the MUT-II to the diagnosis connector (16-pin).
Caution
Turn off the ignition switch before connecting or
disconnecting the MUT-II.
2. Read (and write down) all displayed diagnosis codes.
(Refer to P. 52B-6.)
NOTE
If the battery power supply has been disconnected or
disrupted by the collision, the MUT-II cannot communicate
with the SRS diagnosis unit. Inspect and, if necessary,
repair the body wiring harness before proceeding further.
3. Read the data list (fault duration and how many times
memories are erased) using the MUT-II.
Data list
No.Service Data ItemApplicability
91How long a problem has lastedMaximum time to be stored: 9999 minutes
(approximately 7 days)
92Number indicating houw often the memory is clearedMaximum time to be stored: 250
4. Erase the diagnosis codes and after waiting 5 seconds
or more read (and write down) all displayed diagnosis
codes. (Refer to P.52B-6.)
REPAIR PROCEDURE
WHEN AIR BAG DEPLOYS IN A COLLISION.
1. Replace the following parts with new ones.

SRS diagnosis unit (SDU) (Refer to P. 52B-26.)

Air bag module (Refer to P. 52B-28.)

Front impact sensors (Refer to P. 52B-23.)

SRS ± SRS Diagnosis Unit (SDU)/Air Bag Module and Clock Spring52B-28
INSPECTION52400220093

Check the SDU and brackets for dents, cracks or
deformation.

Check connector for damage, and terminals for
deformation.
Caution
If a dent, crack, deformation or rust is discovered,
replace the SDU with a new one.
NOTE
For checking of the SDU other than described above,
refer to the section concerning troubleshooting. (Refer
to P.52B-6.)
AIR BAG MODULE AND CLOCK SPRING52400240143
Caution
1. Disconnect the battery (±) terminal and wait
for 60 seconds or more before starting work.
Furthermore, the disconnected battery
terminal should be covered with tape to
insulate it. (Refer to P.52B-3, No.4.)
2. Never attempt to disassemble or repair the
air bag modules or clock spring.
If faulty, replace it.
3. Do not drop the air bag modules or clock
spring or allow contact with water, grease
or oil.
Replace it if a dent, crack, deformation or
rust is detected.4. The air bag modules should be stored on
a flat surface and placed so that the pad
surface is facing upward.
Do not place anything on top of it.
5. Do not expose the air bag modules to
temperatures over 93C.
6. After deployment of an air bag, replace the
clock spring with a new one.
7. Wear gloves and safety glasses when
handling air bags that have already
deployed.
8. An undeployed air bag module should only
be disposed of in accordance with the
procedures (Refer to P.52B-34.)

CHASSIS ELECTRICAL ± Battery54-5
CHARGING54100110029
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 ± Battery54-6
BATTERY TESTING PROCEDURE54100120107
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.
OK
Read open circuit voltage.
OK:Open circuit voltage is more than 12.4 VNGCharge battery at 5 amps. (see LOAD TEST RATE CHART)
RetestOK
(1) Connect a load tester to the battery.
(2) Load the battery at the recommended discharge rate (see LOAD
TEST RATE CHART) for 15 seconds.
(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 voltageNG
Replace battery
OK
Normal
LOAD TEST RATE CHART
Battery type50B24R55D23R55B24R75D26R80D26R95D31R
Charging time when fully discharged h
[5-amp rated current charging]8108121214
Load test (Amps)190170210240290310
LOAD TEST CHART
Temperature
C21 and
above16104±1±7±12±18
Minimum voltage V9.69.59.49.39.18.98.78.5

CHASSIS ELECTRICAL ± Ignition Switch and Immobilizer System54-10
Immobilizer System
Caution
1. The ID code should always be re-registered when replacing the immobilizer-ECU. <Petrol-powered
vehicles>
2. If the immobilizer-ECU has been replaced, you will need to re-register the ignition key ID codes
and to reset the code for the fuel cut valve controller to the factory setting. <Diesel-powered
vehicles>
3. If the immobilizer-ECU has been replaced with a new part, the password (vehicle secret code)
which has been stored in the immobilizer-ECU for each vehicle will be replaced by the password
(secret code) specified by the customer.
STANDARD FLOW OF DIAGNOSIS TROUBLESHOOTING54300690024
Refer to GROUP 00 ± How To Use Troubleshooting/Inspection Service Points.
DIAGNOSIS FUNCTION54300700116
DIAGNOSIS CODES CHECK
Refer to GROUP 00 ± How To Use Troubleshooting/Inspection Service Points.
ERASING DIAGNOSIS CODES
Refer to GROUP 00 ± How To Use Troubleshooting/Inspection Service Points.
Caution
The diagnosis codes which result from disconnecting the battery cables cannot be erased.
INSPECTION CHART FOR DIAGNOSIS CODES
<PETROL-POWERED VEHICLES>
54300710027
Diagnosis code No.Inspection itemsReference
page
11Transponder communication system or radio interference of ID code54-11
12*ID code are not the same or are not registered54-11
21Communication system between MUT-II and engine-ECU54-12
31EEPROM abnormality inside immobilizer-ECU54-12
NOTE
*: Diagnosis code No. 12 is not recorded.

CHASSIS ELECTRICAL ± Ignition Switch and Immobilizer System54-16
Inspection Procedure 3
Engine does not start (Cranking but no initial combus-
tion). <Petrol-powered vehicles>
Probable cause
If the fuel injectors are not operating, there might be a problem with the MPI system
in addition to a malfunction of the immobilizer system.
It is normal for this to occur if an attempt is made to start the engine using a key
that has not been properly registered.
Malfunction of MPI system

Malfunction of immobilizer-ECU
Check the system voltage during crank-
ing
OK:8 V or moreNGCheck the battery.
OK
Is a diagnosis code displayed from the
immobilizer-ECU?Ye sTo INSPECTION CHART FOR DIAG-
NOSIS CODE. (Refer to P.54-10.)
No
Is a diagnosis code displayed from the
engine-ECU?Ye sRefer to GROUP 13A ± Troubleshoot-
ing.
No
Check the starting system. (Refer to
GROUP 13A ± Troubleshooting.)
OK
Check trouble symptom.
NG
Check the immobilizer-ECU power
source and the earth circuit. (Refer to
P.54-17, Inspection Procedure 5.)OKCheck trouble symptom.NGReplace the immobilizer-ECU.
Register the password (secret code)
and the ID code. (Refer to P.54-23.)
Inspection Procedure 4
Engine does not start (Cranking but no initial combus-
tion). <Diesel-powered vehicles>
Probable cause
If no fuel injection, there might be a problem with the fuel injection system in addition
to a malfunction of the immobilizer system.
It is normal for this to occur if an attempt is made to start the engine using a key
that has not been properly registered.
Malfunction of diesel fuel injection system

Malfunction of immobilizer-ECU
Check the system voltage during crank-
ing
OK:8 V or moreNGCheck the battery.
OK
Is a diagnosis code displayed from the
immobilizer-ECU?Ye sTo INSPECTION CHART FOR DIAG-
NOSIS CODE. (Refer to P.54-13.)
No
Check the diesel fuel injection system.
(Refer to GROUP 13E ± On-vehicle Ser-
vice.)
OK
Check the immobilizer-ECU power sup-
ply and the earth circuit. (Refer to
P.54-17, Inspection Procedure 5.)OKCheck trouble symptom.NGReplace the immobilizer-ECU.
Register the password (secret code),
reset the code to the factory setting and
register the ID code. (Refer to P.54-23.)
Check trouble symptom.
NG
Replace the fuel cut valve controller
(fuel injection pump assembly).

CHASSIS ELECTRICAL ± Radio and Tape Player54-73
B-8 Insufficient memory (preset stations are erased).
Is dedicated fuse No. 5 blown or is the circuit open?Ye sReplace fuse or repair harness.
No
Disconnect and check the connector at the rear of the radio.
Is the memory backup (battery) power being supplied?NoRepair harness.
Ye s
Repair or replace radio.
C. TAPE PLAYER
C-1 Cassette tape will not be inserted.
Are there any foreign objects in the tape player?Ye sRemove the object(s)*1
No*1
Attempting to force a foreign object (e.g., a coin or clip, etc.) out
of the tape player may damage the mechanism. The player should
be taken to a service dealer for repair.
Does the tape player work if another tape is inserted?Ye sReplace tape*2
No
Repair or replace tape player.
*2
Ensure that the tape label is not loose, that the tape itself is not
deformed and that the tape is tightly wound. Also, tape of C-120
or greater length often get caught in the mechanism and should
not be used.
C-2 No sound (even after a tape has been inserted).
Is dedicated fuse No. 4 blown or is the circuit open?Ye sReplace fuse or repair harness.
No
Is connector at rear of radio connected tightly?NoConnect connector firmly.
Ye s
Disconnect connector at rear of radio. Is ACC power being supplied
to the radio?Ye sRepair or replace tape player.
No
Repair harness.

2
INSPECTION
· Check the SRS-ECU and brackets for dents, cracks or
deformation.
· Check connectors and lock lever for damage, and
terminals for deformation
Caution
If a dent, crack, deformation or rust is discovered,
replace the SRS-ECU with a new one.
NOTE
For checking of the SRS-ECU other than described
above, refer to the section concerning troubleshooting.
(Refer to P.52B-5.)
AIR BAG MODULES AND CLOCK SPRING
Caution
1. Disconnect the battery (-) terminal and wait
for 60 seconds or more before starting
work. Furthermore, the disconnected
battery terminal should be covered with
tape to insulate it. (Refer to P.52B-3)
2. Never attempt to disassemble or repair the
air bag modules or clock spring.
If faulty, replace it.
3. do not drop the air bag modules or clock
spring or allow contact with water, grease
or oil.
Replace it if a dent, crack, deformation or
rust is detected.4. The air bag modules should be stored on a
flat surface and placed so that the pad
surface is facing upward.
Do not place anything on top of it.
5. Do not expose the air bag modules to
temperatures over 93° C.
6. After deployment of an air bag, replace the
clock spring with a new one.
7. Wear gloves and safety glasses when
handling air bags that have already
deployed.
8. An undeployed air bag module should only
be disposed of in accordance with the
procedures (Refer to P.52B-31.)
52B-22SRS - SRS-ECU/Air Bag Modules and Clock Spring
52400220031
After deployment of an air bag, replace the
air bag modules. Check the clock spring,
and if faulty, replace it with a new part. <Correct>
52400240044

4
INSPECTION
· Check the SDU and brackets for dents, cracks or
deformation.
· Check connector for damage, and terminals for
deformation
Caution
If a dent, crack, deformation or rust is discovered,
replace the SDU with a new one.
NOTE
For checking of the SDU other than described above,
refer to the section concerning troubleshooting. (Refer to
P.52B-6.)
AIR BAG MODULES AND CLOCK SPRING
Caution
1. Disconnect the battery (-) terminal and wait
for 60 seconds or more before starting
work. Furthermore, the disconnected
battery terminal should be covered with
tape to insulate it. (Refer to P.52B-3)
2. Never attempt to disassemble or repair the
air bag modules or clock spring.
If faulty, replace it.
3. do not drop the air bag modules or clock
spring or allow contact with water, grease
or oil.
4. Replace it if a dent, crack, deformation or
rust is detected.
4. The air bag modules should be stored on a
flat surface and placed so that the pad
surface is facing upward.
Do not place anything on top of it.
5. Do not expose the air bag modules to
temperatures over 93° C.
6. After deployment of an air bag, replace the
clock spring with a new one.
7. Wear gloves and safety glasses when
handling air bags that have already
deployed.
8. An undeployed air bag module should only
be disposed of in accordance with the
procedures (Refer to P.52B-31.)
52B-28SRS - SRS Diagnosis Unit (SDU)/Air Bag Modules and Clock Spring
52400220093
After deployment of an air bag, replace the
air bag modules. Check the clock spring, and
if faulty, replace it with a new part.
<Correct>
52400240143
<Incorrect>