ABS MITSUBISHI TRITON 1997 Service Manual

7
4.
Remedy the malfunctions indicated by th
diagnosis codes, disconnect the diagnosis code
check harness, and then reconnect the valve
relay harness. Then turn the ignition switch to ON
again to check the ABS warning lamp. (Refer to
P.35B-19.) If the lamp indicates a malfunction,
the valve relay system may be defective. (Refer
to P.35B-17)
ERASING DIAGNOSTIC CODES
With the MUT-II
Connect the MUT-II to the diagnosis connector (16-
pin), then erase the diagnostic codes.
Without the MUT-II
Removing the battery cable from the battery (-)
terminal for 10 seconds or more, then reconnect the
cable.
See next page.
ABS <2WD> - Troubleshooting35B-7

9
TROUBLESHOOTING35201110501
STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING
Refer to GROUP 00 – How to Use Troubleshooting/Inspection Service Points
NOTES WITH REGARD TO DIAGNOSIS
The Phenomena listed in the following table are not abnormal.
Phenomenon Explanation of phenomenon
System check sound When starting the engine, a thudding sound can sometimes be hear
coming from inside the engine compartment, but this is because the
system operation check is being performed, and is not an abnormality.
ABS operation sound 1.
Sound of the motor inside the ABS hydraulic unit operation (whine).
2.
Sound is generated along with vibration of the brake pedal (scraping)
3.
When ABS operates, sound is generated from the vehicle chassis
due to repeated brake application and release.
(Thump: suspension: squeak: tyres)
ABS operation (Long braking
distance)For road surfaces suck as snow-covered roads a gravel roads, the
braking distance for vehicles with ABS can sometimes be longer than
that for other vehicles. Accordingly, advise the customer to drive safely
on suck roads by lowering the vehicle speed and not being to
overconfident.
Diagnosis detection condition can vary depending on the diagnosis code.
Make sure that checking requirements listed in the “Comment” are satisfied when checking the trouble
symptom again.
DIAGNOSIS FUNCTION35201120351
DIAGNOSIS CODES CHECK
Read a diagnosis code by the MUT-II or ABS warning
lamp. (Refer to GROUP 00 - How to Use Trouble-
shooting/Inspection Service Points.)
ERASING DIAGNOSIS CODES
With the MUT-II
Refer to GROUP 00 – How to Use
Troubleshooting/Inspection Service Points

When diagnostic trouble codes (Nos. 21 to 24) (for vehicle wheel speed sensor system failures) occur,
normal MUT-II operation may not erase those codes. In that case, erase the diagnostic trouble codes
using the following procedures.
1.
Perform erasing of the diagnostic trouble codes by special operation of the brake pedal. (See erasing
procedure for the diagnostic trouble codes without use of the MUT-II.)
2.
Turn the ignition switch OFF.
3.
Perform erasing of the diagnostic trouble codes by use of the MUT-II.
ABS <4WD> - Troubleshooting35B-4
><

11
TROUBLESHOOTING35201110143
STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING
Refer to GROUP 00 – How to Use Troubleshooting/Inspection Service Points
NOTES WITH REGARD TO DIAGNOSIS
The Phenomena listed in the following table are not abnormal.
Phenomenon Explanation of phenomenon
System check sound When starting the engine, a thudding sound can sometimes be hear
coming from inside the engine compartment, but this is because the
system operation check is being performed, and is not an abnormality.
ABS operation sound 1.
Sound of the motor inside the ABS hydraulic unit operation (whine).
2.
Sound is generated along with vibration of the brake pedal
(scraping)
3.
When ABS operates, sound is generated from the vehicle chassis
due to repeated brake application and release.
(Thump: suspension: squeak: tyres)
ABS operation (Long braking
distance)For road surfaces suck as snow-covered roads an gravel roads, the
braking distance for vehicles with ABS can sometimes be longer than
that for other vehicles. Accordingly, advise the customer to drive safely
on suck roads by lowering the vehicle speed and not being to
overconfident.
Shock during system operation
checkShock may be felt when the brake pedal is depressed slightly at a low
driving speed. This occurs due to ABS operation check (initial check at
a vehicle speed of 8 km/h), and does not indicate any malfunction.
Diagnosis detection condition can vary depending on the diagnosis code.
Make sure that checking requirements listed in the “Comment” are satisfied when checking the trouble
symptom again.
DIAGNOSIS FUNCTION35201120108
DIAGNOSIS CODES CHECK
Read a diagnosis code by the MUT-II or ABS warning
lamp. (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.
See next page
ABS <2WD> - Troubleshooting35B-5

t h e ig nit io n s w it c h .
4 . R ead o ut a d ia g nosis c o de b y o bse rv in g h ow t h e w arn in g
l a m p f la sh es.
A pplic ab le s ys te m s M
PI Eng in e w arn in g la m p A
/T Neutr a l p osit io n in dic a to r la m p A
BS ABS w arn in g la m p T
C L TC L-O FF in dic a to r la m p 0
.5 s e c. 0
.5 s e c. < M PI, A /T >
0 .2 5 s e c. < A BS >
A03X 0114
A
03X 0113 M
B991529

t h e ig nit io n s w it c h .
4 . R ead o ut a d ia g nosis c o de b y o bse rv in g h ow t h e w arn in g
l a m p f la sh es.
A pplic ab le s ys te m s M
PI Eng in e w arn in g la m p A
/T Neutr a l p osit io n in dic a to r la m p A
BS ABS w arn in g la m p O
ff 0
.5 s e c. < M PI, A /T >
0 .2 5 s e c. < A BS>
U nit s
s ig nal.
T
ens s ig nal
P ause t im e
3 s e cs.
O
n
O ff 1
.5 s e c.
0.5 s e c. 0
.5 s e c.
P la ce
d iv is io n
2 s e cs. A
03X 0114
A
03X 0113 M
B991529

t h e ig nit io n s w it c h .
4 . R ead o ut a d ia g nosis c o de b y o bse rv in g h ow t h e w arn in g
l a m p f la sh es.
A pplic ab le s ys te m s M
PI Eng in e w arn in g la m p A
/T Neutr a l p osit io n in dic a to r la m p A
BS ABS w arn in g la m p 0
.5 s e c. < M PI, A /T >
0 .2 5 s e c. < A BS >
P la ce
d iv is io n 2
s e cs. U
nit s
s ig nal.
T
ens s ig nal
P ause t im e
3 s e cs.
O
n
O ff 1
.5 s e c.
0.5 s e c. 0
.5 s e c.
A03X 0114
A
03X 0113 M
B991529