Mitsubishi Colt Ralliart. Manual — part 435
![](/vehicles/winoney/ama/flend/domousethtay.png)
MB991006
SPECIAL TOOLS
POWER STEERING
37-7
MB990228 or
MB991006
Preload socket
Steering gear total pinion torque check
and adjustment
MB990803
MB990803
Steering wheel
puller
Steering wheel disconnection
Tool
Number
Name
Use
Main
Index
Group
TOC
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TROUBLESHOOTING
POWER STEERING
37-8
TROUBLESHOOTING
DIAGNOSIS TROUBLESHOOTING FLOW
M1372007300257
Refer to GROUP 00
− Contents of Troubleshooting
.
DIAGNOSTIC FUNCTION
M1372007400049
HOW TO READ DIAGNOSIS CODE
Connect the M.U.T.-III to the 16-pin diagnosis con-
nector, and read a diagnosis code (Refer to GROUP
00, How to Use Troubleshooting/Inspection Service
Points
− Diagnosis Function
How to erase diagnosis code
Connect the M.U.T.-III to the 16-pin diagnosis con-
nector, and erase a diagnosis code (Refer to
GROUP 00, How to Use Troubleshooting/Inspection
Service Points
− Diagnosis Function
).
CHECK OF ELECTRIC POWER
STEERING WARNING LAMP
M1372013400101
AC510342
EPS warning lamp
AB
<VRX>
AC510343
EPS warning lamp
AC
<LS and VR>
AC601682
EPS warning lamp
AB
<RALLIART Version-R>
1. Check the electric power steering warning lamp
illuminates as follows.
• When the ignition switch is turned ON, the elec-
tric power steering warning lamp illuminates until
the engine is started. The lamp extinguishes after
the engine is started.
NOTE: Even if the ignition switch is turned to the ON
position (within approximately 0.3 seconds) again
immediately after it is turned to the LOCK (OFF)
position, the electric power steering warning lamp
does not illuminate.
2. If the lamp does not operate as described above,
the electric power steering system or the
combination meter may be defective. Check for
diagnosis code, and carry out diagnosis (Refer to
). If no diagnosis codes are set, carry out
diagnosis by referring to the electric power
steering warning lamp-related inspection items on
the trouble symptom chart (Refer to
Main
Index
Group
TOC
![](/vehicles/winoney/ama/flend/mere.png)
TROUBLESHOOTING
POWER STEERING
37-9
DIAGNOSIS CODE CHART
M1372007500046
CAUTION
• During diagnosis, a diagnosis code associ-
ated with other system may be set when the
ignition switch is turned on with connector(s)
disconnected. On completion, confirm all sys-
tems for diagnosis code(s). If diagnosis
code(s) are set, erase them all.
•
Diagnosis
code No.
Diagnostic item
Reference pages or actions
C1511
Torque sensor main system malfunction
C1512
Torque sensor sub system malfunction
C1513
Large difference between main torque sensor and
sub torque sensor
C1514
Torque sensor power supply abnormality
C1521
Vehicle speed sensor input malfunction
C1522
Engine speed input malfunction
C1531
Motor terminal voltage abnormality
C1532
Over real current of motor
C1533
Motor current sensor problem
Replace the electric power
steering-ECU (Refer to
).
C1534
Under real current of motor
C1541
Fail-safe relay is stuck to ON.
Replace the electric power
steering-ECU (Refer to
).
C1542
Fail-safe relay stuck off.
C1607
Abnormal ECU (microcomputer)
Replace the electric power
steering-ECU (Refer to
).
C1860
Power supply voltage abnormality (high voltage)
C1861
Power supply voltage abnormality (low voltage)
U1073
Bus off
U1100
Engine-related time-out
U1102
CAN communication time-out with ABS-ECU
U1120
Engine-related failure information
U1122
ABS-ECU failure information
If more than three minutes elapse after the
ignition switch is turned ON without starting
engine, the electric power steering-ECU may
set diagnosis codes U1100 and U1102 as past
trouble.
Main
Index
Group
TOC
![](/vehicles/winoney/ama/flend/rason.png)
TROUBLESHOOTING
POWER STEERING
37-10
DIAGNOSTIC TROUBLE CODE
PROCEDURES
Code No.C1511: Torque sensor main system malfunction
Code No.C1512: Torque sensor sub system malfunction
CAUTION
Whenever the ECU is replaced, ensure that the communication circuit is normal.
ELECTRIC POWER STEERING-ECU
TORQUE SENSOR
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet
Torque Sensor Circuit
DIAGNOSIS CODE SET CONDITIONS
These diagnosis codes are set in the following case:
C1511: Torque sensor main system malfunction
• The torque sensor main output voltage does not
meet a predetermined voltage stored in the
microcomputer, and the microcomputer deter-
mines that there is a problem in the torque sensor
main system.
Criteria for judging malfunction
• The torque sensor main output voltage is
more than 4.5 V or less than 0.5 V.
C1512: Torque sensor sub system malfunction
• The torque sensor sub output voltage does not
meet a predetermined voltage stored in the
microcomputer, and the microcomputer deter-
mines that there is a problem in the torque sensor
sub system.
Criteria for judging malfunction
• The torque sensor sub output voltage is more
than 4.5 V or less than 0.5 V.
Main
Index
Group
TOC
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