Mitsubishi Outlander GS45X. Manual — part 461
DIAGNOSIS
TSB Revision
ACTIVE STABILITY CONTROL SYSTEM (ASC)
35C-271
26
Brake fluid pressure
switch
Brake fluid level is lower than the
"LOWER" marking.
Low
Brake fluid level is higher than the
"LOWER" marking.
Normal
28
ASC/TCL off switch
When the ASC OFF switch is not
operated (when the ASC control is
available)
ON
When the ASC OFF switch is operated
(pressed and held for 3 seconds or
more)(when the ASC control is
prohibited)
OFF
When the ASC OFF switch is operated
(pressed and held for 15 seconds or
more)(when the ASC OFF control is
prohibited by fail-safe function)
*2
ON
45
SAS OK flag
When the steering wheel sensor
neutral point is learned
Comp
When the steering wheel sensor
neutral point is not learned
Not Comp
When the steering wheel sensor is
defective
SAS fail
SAS fail&No Comp
65
Engine Speed
When the accelerator pedal is
depressed (engine started)
The tachometer display and
the scan tool display almost
agree with each other.
66
Engine torque
Displays the engine torque.
67
APS
Displays the accelerator pedal
opening angle.
68
Allow ESP torque request
Permitted
70
Target gear
When the selector lever is operated
Displays the selector lever
position.
71
Actual gear
72
Master cylinder pressure
Offset
The difference between the neutral
position that was input to the
ASC-ECU before the master cylinder
pressure sensor calibration and the
neutral position after the calibration.
-8 to 8 bar
73
Lateral G sensor offset
The difference between the neutral
position that was input to the
ASC-ECU before the G and yaw rate
sensor calibration and the neutral
position after the calibration.
-0.15 to 0.15 G
86
Ignition switch
Ignition switch: ON
ON
87
Ignition switch (input)
Ignition switch: ON
ON
88
Vehicle speed
Perform a test run of the vehicle.
The speedometer display and
the scan tool display almost
agree with each other.
Item No. Check item
Check condition
Normal condition
DIAGNOSIS
TSB Revision
ACTIVE STABILITY CONTROL SYSTEM (ASC)
35C-272
NOTE:
.
•
*1
: The G and yaw rate sensor does not detect longitudinal acceleration of a vehicle, thus "0 G" is always
set.
•
*2
: When the ASC OFF switch is pressed and held for 15 seconds, the ASC system returns to the ON sta-
tus.
91
Brake pressure sensor
The brake pedal is depressed.
ON
The brake pedal is released.
OFF
96
G sensor offset
The difference between the neutral
positions before the calibration and
after the calibration received in the
ASC-ECU at G & yaw rate sensor
calibration.
• 0 G
*1
(fixed value)
<Vehicles with FWD>
• -0.15 to 0.15 G
<Vehicles with AWD, FWD
with idle neutral control>
97
Yaw rate sensor offset
The difference between the neutral
position that was input to the
ASC-ECU before the G and yaw rate
sensor calibration and the neutral
position after the calibration.
-6.0 to 6.0 deg/s
105
Power supply voltage (input)
Battery positive voltage (10 to
18 V ASC operatable range)
120
Parking brake switch
(Input)
When the parking brake lever is pulled
up:
ON
When the parking brake lever is
released:
OFF
128
A.S.C./TCL off switch
(input)
The ASC OFF switch is pressed.
ON
The ASC OFF switch is not operated.
OFF
Item No. Check item
Check condition
Normal condition
DIAGNOSIS
TSB Revision
ACTIVE STABILITY CONTROL SYSTEM (ASC)
35C-273
ACTUATOR TEST REFERENCE TABLE
M1355001600387
Using scan tool, the following actuators can be forc-
ibly operated:
NOTE:
.
•
ABS and ASC are operated by ASC-ECU.
•
When ASC-ECU is disabled due to the fail-safe
function, the actuator test cannot be performed.
•
The actuator test can be performed only when
the vehicle is stationary.
•
While the actuator test is performed, the ABS
warning light flashes at a rate of 2 Hz.
•
After the actuator test has been performed, the
brake warning light, ABS warning light, ASC
operation display, and ASC OFF display illumi-
nate until the ignition switch is turned to ON again
or the communication between scan tool and
ASC-ECU is terminated.
.
Actuator test specifications
.
Operation pattern of items 01 to 08
Item No.
Check item
Driven component
01
FL wheel ABS drive
Solenoid valve for the corresponding
channel of the hydraulic unit and pump
motor (simplified inspection mode)
02
FR wheel ABS drive
03
RL wheel ABS drive
04
RR wheel ABS drive
05
FL wheel TCL drive
06
FR wheel TCL drive
07
RL wheel TCL drive
08
RR wheel TCL drive
09
Engine TCL drive
Outputs the engine torque control signal
(engine torque = 0 N
⋅m) to the engine
ECU for three seconds.
AC400776
1second
2 seconds
Approx. 0.05
second
Approx. 0.01
second
AK
End
Scan tool actuator test
(Item No.05, 06, 07, 08) start
End
Increase in pressure
Steady pressure
Reduction in pressure
Increase in pressure
Steady pressure
Reduction in pressure
Drive
Stop
Cut valve,
Suction valve
(TCL/Skid control)
Solenoid valve
(ABS)
Pump motor
Scan tool actuator test
(Item No.01, 02, 03, 04) start
DIAGNOSIS
TSB Revision
ACTIVE STABILITY CONTROL SYSTEM (ASC)
35C-274
CHECK AT ECU TERMINALS
M1355001700663
.
TERMINAL VOLTAGE CHECK
Required Special Tool:
MB991997: ASC Check Harness
Connect the special tool ASC check harness (MB991997) to
measure the voltage between each check connector terminal
and the ground terminal (No.16 or 47).
AC611138AO
ASC-ECU
MB991997
A-02 ASC-ECU
harness connector
Check harness
Terminal No.
Check item
Check condition
Normal condition
1
Motor power supply
Ignition switch: ON (OFF) Approximately
system voltage
2
ASC-ECU power supply
Ignition switch: ON
Approximately
system voltage
Ignition switch: OFF
Approximately
system voltage
8
Ignition switch signal for ASC-ECU
activation
Ignition switch: ON
Approximately
system voltage
Ignition switch: OFF
1 Volt or less
22
G and yaw rate sensor power supply
Ignition switch: ON
Approximately
system voltage
32
Solenoid valve power supply
Ignition switch: ON (OFF) Approximately
system voltage
34
Wheel speed sensor (FR) power
supply
Ignition switch: ON
Approximately
system voltage
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