Mitsubishi Outlander (2013+). Manual - part 485
TROUBLESHOOTING
ELECTRIC POWER STEERING (EPS)
37-11
YES :
Replace the steering column shaft
assembly (Refer to
). Then go to
Step 8.
NO :
Intermittent malfunction (Refer to GROUP
00
− How to Cope with Intermittent
Malfunctions ).
STEP 8. Check whether the diagnosis code is
reset.
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF)
position to the "ON" position.
(3) Check if the diagnosis code is set.
Q: Is the diagnosis codes C1510 or C1511 set?
YES :
Return to Step 1.
NO :
This diagnosis is complete.
Code No.C1512 Torque sensor main/sub voltage
CAUTION
• If there is any problem in the CAN bus lines,
an incorrect diagnosis code may be set. Prior
to this diagnosis, diagnose the CAN bus lines
(Refer to GROUP 54C, CAN Bus Diagnostics
Table).
• Whenever ECU is replaced, ensure that the
CAN bus lines are normal.
OPERATION
Power is supplied to the torque sensor from the
EPS-ECU.
FUNCTION
The voltage based on the input torque is output to
the EPS-ECU from the torque sensor main and
torque sensor sub, and the sum of the torque sensor
main output voltage and sub output voltage values
are monitored for motor control.
TROUBLE JUDGEMENT
Check Conditions
With the torque sensor power supply ON, 5 V is sup-
plied to the torque sensor.
Judgement Criterion
The sum of the torque sensor main output voltage
and sub output voltage does not meet a predeter-
mined value stored in the microcomputer, and the
microcomputer determines that a problem has
occurred in the mutual monitoring for the sensor
main/sub systems.
Fail Safe, Back Up Function
The EPS-ECU stops the motor control and illumi-
nates the electric power steering warning display,
then sets the diagnosis code No. C1512.
PROBABLE CAUSES
• Malfunction of CAN bus line
• Defective torque sensor of the steering column
shaft assembly
• Defective harness wire(s) or connector(s)
• Short or open circuit between the EPS-ECU
and the torque sensor or loose connector
contact
• Malfunction of the EPS-ECU
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III CAN bus diagnostics
Use M.U.T.-III to diagnose the CAN bus lines.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the CAN bus lines (Refer to GROUP
54C
− CAN Bus Diagnostics Table ). On
completion, go to Step 2.
STEP 2. Diagnosis code recheck after resetting
CAN bus lines
(1) Erase the diagnosis code.
(2) Turn the ignition switch from the "LOCK" (OFF)
position to the "ON" position.
(3) Check if the diagnosis code is set.
Q: Is the diagnosis codes C1512 set?
YES :
Go to Step 3.
NO :
This diagnosis is complete.
STEP 3. Voltage measurement at EPS-ECU
connector (TSM, TSS, GND terminal)
(1) The steering is in the neutral position.
(2) Measure the EPS-ECU voltage without
disconnecting the connector (by backprobing).
(3) Turn the ignition switch from the "LOCK" (OFF)
position to the "ON" position.
(4) Measure the voltage between the EPS-ECU
connector (TSM terminal) and the EPS-ECU
connector (GND terminal) or body earth. <main