Mitsubishi Lancer (4A9 engine). Manual - part 39
TROUBLESHOOTING
ACTIVE STABILITY CONTROL SYSTEM (ASC)
35C-9
FAIL-SAFE FUNCTIONS
ASC-ECU constantly monitors the input and output
signals. If an error is detected in the system, ASC-
ECU sends a fail signal and the corresponding indi-
cator lamp is illuminated or blinks. Various controls
are processed depending on the cause of malfunc-
tion as shown below.
Illumination condition of warning lamp and display in case of failure
Diagnosis
code No.
Item
Brake
warning
lamp,
brake
warning
display
ABS warning
lamp,
ABS warning
display
ASC warning
lamp,
ASC warning
display
ASC OFF
display
ASC OFF
lamp
C100A
Abnormality in FL wheel speed
sensor circuit
OFF
*1
ON
*2
ON
ON
C1015
Abnormality in FR wheel speed
sensor circuit
C1020
Abnormality in RL wheel speed
sensor circuit
C102B
Abnormality in RR wheel speed
sensor circuit
C1011
Abnormality in FL wheel speed
sensor signal
OFF
*1
ON
*2
ON
ON
C101C
Abnormality in FR wheel speed
sensor signal
C1027
Abnormality in RL wheel speed
sensor signal
C1032
Abnormality in RR wheel speed
sensor signal
C1014
Mutual monitoring of FL wheel
speed sensor
OFF
*1
ON
*2
ON
ON
C101F
Mutual monitoring of FR wheel
speed sensor
C102A
Mutual monitoring of RL wheel
speed sensor
C1035
Mutual monitoring of RR wheel
speed sensor
C1041
Abnormality in periodical signal
for FL wheel speed sensor
OFF
*1
ON
*2
ON
ON
C1042
Abnormality in periodical signal
for FR wheel speed sensor
C1043
Abnormality in periodical signal
for RL wheel speed sensor
C1044
Abnormality in periodical signal
for RR wheel speed sensor