service MITSUBISHI TRITON 1997 Repair 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.)

54-2
MULTI-METER 35. . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 35. . . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE 36. . . . . . . . . . . . . . . . .
Voltmeter Simple Test 36. . . . . . . . . . . . . . . . . . . .
MULTI-METER 37. . . . . . . . . . . . . . . . . . . . . . . . . .
OUTSIDE THERMO SENSOR 38. . . . . . .
SERVICE SPECIFICATIONS 38. . . . . . . . . . . . .
OUTSIDE THERMO SENSOR 38. . . . . . . . . . . .
HEADLAMP* 39. . . . . . . . . . . . . . . . . . . . . . .
SERVICE SPECIFICATIONS 39. . . . . . . . . . . . .
SPECIAL TOOLS 39. . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 40. . . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE 46. . . . . . . . . . . . . . . . .
Headlamp Aiming 46. . . . . . . . . . . . . . . . . . . . . . . .
Intensity Measurement 47. . . . . . . . . . . . . . . . . . . .
Bulb Replacement 47. . . . . . . . . . . . . . . . . . . . . . . .
HEADLAMP 48. . . . . . . . . . . . . . . . . . . . . . . . . . . .
FRONT COMBINATION LAMP* 51. . . . . .
SIDE TURN-SIGNAL LAMP* 52. . . . . . . .
REAR COMBINATION LAMP* 53. . . . . . .
REAR FOG LAMP 54. . . . . . . . . . . . . . . . . .
SPECIAL TOOL 54. . . . . . . . . . . . . . . . . . . . . . . .
REAR FOG LAMP 54. . . . . . . . . . . . . . . . . . . . . .
RHEOSTAT 56. . . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOL 56. . . . . . . . . . . . . . . . . . . . . . . .
RHEOSTAT 56. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HAZARD WARNING LAMP SWITCH
57 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOL 57. . . . . . . . . . . . . . . . . . . . . . . .
HAZARD WARNING LAMP SWITCH 57. . . . .
HORN 58. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIGARETTE LIGHTER 59. . . . . . . . . . . . . .
CLOCK 60. . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOL 60. . . . . . . . . . . . . . . . . . . . . . . .
CLOCK 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RADIO AND TAPE PLAYER 61. . . . . . . .
SPECIAL TOOL 61. . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING 61. . . . . . . . . . . . . . . . . . .
Quick-reference Troubleshooting Chart 61. . . . .
Chart 62. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radio and Tape Player with
Anti-theft System 77. . . . . . . . . . . . . . . . . . . . . . . . .
RADIO AND TAPE PLAYER 80. . . . . . . . . . . . .
SPEAKER 81. . . . . . . . . . . . . . . . . . . . . . . . .
ANTENNA 82. . . . . . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOL 82. . . . . . . . . . . . . . . . . . . . . . . .
ANTENNA 82. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONTINUED ON NEXT PAGE

54-3
REAR WINDOW DEFOGGER 83. . . . . . .
SPECIAL TOOL 83. . . . . . . . . . . . . . . . . . . . . . . .
ON-VEHICLE SERVICE 83. . . . . . . . . . . . . . . . .
Printed-heater Line Check 83. . . . . . . . . . . . . . . .
REAR WINDOW DEFOGGER SWITCH 84. . .
RADIATOR FAN MOTOR
Refer to GROUP 14 . . . . . . . . . . . . . . . . . . .
INTERCOOLER (INTERCOOLER FAN
MOTOR) Refer to GROUP 15. . . . . . . . . .
REAR DIFFERENTIAL LOCK
Refer to GROUP 27 . . . . . . . . . . . . . . . . . . .
SERVICE BRAKES (ABS)
Refer to GROUP 35B, 35C . . . . . . . . . . . .
DOOR GLASS AND REGULATOR
(POWER WINDOWS)
Refer to GROUP 42 . . . . . . . . . . . . . . . . . . . DOOR HANDLE AND LATCH (DOOR
LOCKING) Refer to GROUP 42. . . . . . . .
WINDSHIELD WIPER AND WASHER
Refer to GROUP 51 . . . . . . . . . . . . . . . . . . .
HEADLAMP WASHER
Refer to GROUP 51 . . . . . . . . . . . . . . . . . . .
DOOR MIRROR (ELECTRONIC
CONTROLLED DOOR MIRROR)
Refer to GROUP 51 . . . . . . . . . . . . . . . . . . .
FRONT SEAT (HEATED SEAT)
Refer to GROUP 52A . . . . . . . . . . . . . . . . .
SRS AIR BAG
Refer to GROUP 52B . . . . . . . . . . . . . . . . .
HEATER Refer to GROUP 55. . . . . . . . . .
AIR CONDITIONER
Refer to GROUP 55 . . . . . . . . . . . . . . . . . . .

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. 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. 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

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 ± Combination Meters54-25
COMBINATION METERS54300030116
SERVICE SPECIFICATIONS
ItemsStandard value
Speedometer indication error km/h (mph)40 (20)40 ± 48 (20 ± 25)
80 (40)80 ± 92 (40 ± 47)
120 (60)120 ± 136 (60 ± 69)
160 (80)160 ± 180 (80 ± 91)
± (100)± (100 ± 114)
Tachometer indication error r/minPetrol-powered vehicles700+100
3,000+150
5,000+250
6,000+300
Diesel-powered vehicles700+100
3,000+150
4,750+160
5,000+250
Fuel gauge unit resistance WFloat point F1 ± 5
Float point E103 ± 117
Fuel gauge unit float height mmA (Float point F)214.1
B (Float point E)251.2
Fuel gauge resistance WPower supply and earth192
Power supply and fuel gauge107
Fuel gauge and earth85
Engine coolant temperature gauge
resistanceW
Power supply and earth191
resistance WPower supply and engine coolant temperature gauge103
Engine coolant temperature gauge and earth88
Engine coolant temperature gauge unit resistance (at 70
C) W104 + 13.5
SEALANT54300050075
ItemsSpecified sealantRemark
Engine coolant temperature gauge
unit threaded portion3M Adhesive nut locking No. 4171 or
equivalentDrying sealant

CHASSIS ELECTRICAL ± Radio and Tape Player54-62
ItemsProblem symptomRelevant chart
Tape playerCassette tape will not be inserted.C-1
No sound.C-2
No sound from one speaker.C-3
Sound quality is poor, or sound is weak.C-4
Cassette tape will not be ejected.C-5
Uneven revolution. Tape speed is fast or slow.C-6
Faulty auto reverse.C-7
Tape gets caught in mechanism.C-8
CHART
A. NOISE
A-1 Noise appears at certain places when travelling (AM).
Is there a particular structure?NoDo the following measures eliminate the
noise?
1. Change to a different station with
a strong signal to boost resistance
to interference.
2. Suppress high tones to reduce
noise.
3. Extend antenna completely.Ye sOK
Ye s
Find out the following information from
the user:
1. Place
2. Locality conditions (valley, moun-
tain, etc.)
3. Name and frequency of stations
affected by noiseNo
If due to vehicle noise:
It may not be possible to prevent noise
if the signal is weak.
If there is more noise than other radios, find out the noise
conditions and the name and frequency of the receiving
stations from the user, and consult with the service centre.
If due to external noise:
In almost all cases, prevention on the
receiver side is impossible. Weak sig-
nals especially are susceptible to inter-
ference.

CHASSIS ELECTRICAL ± Radio and Tape Player54-64
A-3 Mixed with noise, only at night (AM).
The following factors can be considered as possible
causes of noise appearing at night.
1. Factors due to signal conditions: Due to the
fact that long-distance signals are more easily
received at night, even stations that are
received without problem during the day may
experience interference in a general worsening
of reception conditions. The weaker a station
is the more susceptible it is to interference,and a change to a different station or the
appearance of a beating sound* may occur.
Beat sound*: Two signals close in frequency
interfere with each other, creating a repetitious
high-pitched sound. This sound is generated
not only by sound signals but by electrical
waves as well.
2. Factors due to vehicle noise: Alternator noise
may be a cause.
Is the noise still obvious even with the
lamps OFF?No
Ye s
Do the following measures eliminate the
noise?

Tune to a station with a strong signal.

Tune to a station with a strong signal
without completely extending the
antenna.Ye sOK
No
Does the noise fade away when the
vehicle harness is moved away from
the radio chassis? (if the harness is not
in the proper position.)Ye sOK
No
If there is more noise than other radios, consult a service
centre.

CHASSIS ELECTRICAL ± Radio and Tape Player54-65
A-4 Broadcasts can be heard but both AM and FM have a lot of noise.
(1)(2)
Noise occurs when the engine is stopped.
Ye s
Do the following measures eliminate the noise?

Tune to a station with a strong signal.

Extend the antenna completely.

Adjust the sound quality to suppress high tones.Ye s
OK
No
Is the radio body earth mounted securely?NoSecurely tighten the nuts for the body
earth.
Ye s
Is the antenna plug properly connected to the radio?NoCorrectly attach the antenna plug.
Ye s
Is the antenna itself in good condition or is it properly
mounted?NoClean the antenna plug and earth wire
mounting area. Mount the antenna se-
curely.
Ye s
If there is more noise than other radios, consult a service
centre.
Is the noise eliminated?
NoYe s
OK
Noise occurs when the engine in running.
Inspect the vehicle's noise suppressor. (Refer to A-6.)
NOTE
About noise encountered during FM reception only.
Due to differences in FM and AM systems, FM
is not as susceptible as AM to interference from
engines, power lines, lightning, etc. On the other
hand, there are cases due to the characteristicsof FM waves of noise or distortion generated by
typical noise interference (first fading and
multipath). (Refer to A-2.)
as mountainous regions, but this is not due to a
problem with the radio.>

CHASSIS ELECTRICAL ± Radio and Tape Player54-66
A-5 There is more noise either on AM or on FM.
1. There is much noise only on AM.
Due to differences in AM and FM systems,
AM is more susceptible to noise interference.
Were conditions such as the following present when noise was
received?

Lightning was flashing. A motorcycle was passing.

A vehicle passed close by, but it appeared to be a vehicle
generating a particularly large amount of noise radiation.

Passed beneath a power line. Passed under a bridge.

Passed beneath a telephone line.

Passed close by a signal generator.

Passed close by some other source of electrical noise.
Ye s
No
Continue to check for static; when static is detected, check for
the conditions listed above.Ye sNoise prevention on the radio side is difficult. If the problem is
particularly worse than other radios, consult a service centre.
No
If the problem is particularly worse than other radios, consult a
service centre.
2. There is much noise only on FM.
Due to differences in FM and AM systems,
FM is not as susceptible as AM to interference
from engines, power lines, lightning, etc. On
the other hand, there are cases due to the
characteristics of FM waves of noise ordistortion generated by typical noise
interference (first fading and multipath). (Refer
to A-2) areas such as mountainous regions, but this
is not due to a problem with the radio.>