Mitsubishi Outlander GS45X. Manual - part 425
DIAGNOSIS
TSB Revision
ACTIVE STABILITY CONTROL SYSTEM (ASC)
35C-127
CAUTION
• If there is any problem in the CAN bus lines, an incor-
rect diagnostic trouble code may be set. Prior to this
diagnosis, diagnose the CAN bus lines (Refer to
GROUP 54C
− CAN Bus Line Diagnostic Flow
• Whenever ECU is replaced, ensure that the CAN bus
lines are normal.
• When the hydraulic unit (integrated with ASC-ECU) is
replaced, always carry out the calibration of the steer-
ing wheel sensor, the G and yaw rate sensor and brake
fluid pressure sensor (Refer to
and
.
CIRCUIT OPERATION
• ASC-ECU contains the power supply circuit (terminal No.1)
for the pump motor. The pump motor is energized by the
motor switch, which is incorporated in ASC-ECU.
• The pump motor switch, which is incorporated in ASC-ECU,
is always off unless the motor and solenoid valve check is
activated when the vehicle is started.
• ASC-ECU activates the pump motor by turning on the ECU
built-in pump motor switch.
.
DTC SET CONDITIONS
This diagnostic trouble codes will be set under the cases
below:
• When the power supply voltage of the pump motor, which is
not in operation, is abnormally low for a prolonged period
• When the power supply voltage of the pump motor, which is
not in operation, is abnormally high for a prolonged period
.
PROBABLE CAUSES
Current trouble
• Fusible link malfunction
• Damaged wiring harness and connectors
• Abnormality in battery or generator
• ASC-ECU malfunction
Past trouble
• Carry out diagnosis with particular emphasis on wiring har-
ness and connector failures between the power supply cir-
cuit (A-02 ASC-ECU connector terminal No. 1) to the
ASC-ECU motor and the ground circuit (A-02 ASC-ECU
connector terminal No.16 and 47). For diagnosis proce-
dures, refer to How to treat past trouble (Refer to GROUP
00
− How to Use Troubleshooting/How to Treat Past Trou-
).
DIAGNOSIS
Required Special Tools:
• MB991958: Scan Tool (M.U.T.-III Sub Assembly)