Mitsubishi Evolution X. Manual — part 341
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
MANUAL TRANSAXLE
22A-13
C161F
AWC actuator protection 1
This is the code that is
set when the control is
suspended to protect
AWC actuator, and not a
malfunction.
C1620
AYC control system (abnormal)
Refer to GROUP 27
−
Troubleshooting
C1621
AWC actuator protection 2
This is the code that is
set when the control is
suspended to protect
AWC actuator, and not a
malfunction.
C1622
ACD control system (abnormal)
C1623
Brake control system (abnormal)
C1624
AWC-ECU system (internal error)
C1625
AWC pressure sensor system (power supply voltage abnormality)
C2100
Battery voltage malfunction (low voltage)
C2101
Battery voltage malfunction (high voltage)
C2114
G and yaw rate sensor power supply (low voltage)
C2115
G and yaw rate sensor power supply (high voltage)
C2203
VIN not recorded
C2204
G and yaw rate sensor system (internal error)
C2205
Steering wheel sensor system (internal error)
U0001
Bus-off
U0100
Engine time-out error
U0101
TC-SST time-out error
U0121
ASC time-out error
U0126
Steering wheel sensor time-out error
U0141
ETACS time-out error
U0401
Engine data error
U0428
Steering wheel sensor data error
U0431
ETACS data error
U1003
Bus off (local CAN)
U1415
Coding incomplete/fail
U1417
Coding data malfunction
U1425
TC-SST data error
U1426
ASC data error
U1427
Wheel speed sensor data error
U1428
G and yaw rate sensor data error
DTC No.
Item
Reference page
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
MANUAL TRANSAXLE
22A-14
SYMPTOM CHART
M1221007100827
Symptom
Inspection
procedure
No.
Reference page
Communication between the scan tool and AWC-ECU
cannot be established
1
Mode does not change even when the AWC switch is
pressed.
2
<Vehicles with steering
wheel audio remote control
switch>
<Vehicles without
steering wheel audio remote
control switch>
AWC-ECU power supply circuit malfunction
3
AWC control mode display is flashing. (Diagnostic trouble
code No. C161F or C1621 is set)
−
This is the symptom that
AWC-ECU suspends the control
to protect the actuator during
severe driving, and not a
malfunction.
Turn the ignition switch from
OFF to ON to return to control.
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
MANUAL TRANSAXLE
22A-15
DIAGNOSTIC TROUBLE CODE PROCEDURES
DTC C1000: Stoplight Switch System
ETACS-ECU
STOPLIGHT
SWITCH
FUSIBLE
LINK
34
JOINT
CONNECTOR (4)
Stoplight switch system circuit
AC708950
Connectors: C-43, C-47, C-48
AI
C-43 (B)
C-47
C-48
AC708972BH
Connectors: C-304, C-309, C-312
C-304
C-312
ETACS-ECU
C-309 (B)
DIAGNOSIS <S-AWC(SUPER ALL WHEEL CONTROL)>
TSB Revision
MANUAL TRANSAXLE
22A-16
CAUTION
• If there is any problem in the CAN bus lines,
an incorrect diagnostic trouble code may be
set. Prior to this diagnosis, diagnose the CAN
bus lines.
• Whenever the ECU is replaced, ensure that
the CAN bus lines are normal.
.
OPERATION
AWC-ECU receives signals of stoplight switch from
ETACS-ECU via the CAN bus lines.
.
DTC SET CONDITIONS
This diagnostic trouble code is set when the abnor-
mality below is detected:
• The vehicle has run for a long time with the stop
light switch turned ON.
• With the stoplight switch OFF, the vehicle speed
is decelerated suddenly.
.
PROBABLE CAUSES
• Incorrect adjustment of stoplight switch position
• Malfunction of stoplight switch
• Stoplight malfunction
• Damaged harness wires and connectors
• Malfunction of the ETACS-ECU
• Malfunction of AWC-ECU
DIAGNOSTIC PROCEDURE
STEP 1. Scan tool CAN bus diagnostics
Using scan tool MB991958, 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
−
Troubleshooting
.) After repairing the CAN
bus line, go to Step 2.
STEP 2. Check whether the DTC is reset.
Q: Is DTC No. C1000 set?
YES : Go to Step 3.
NO : This diagnosis is complete.
STEP 3. Check of the stoplight on and off
Check that the stoplight illuminates when the brake pedal is
depressed, and the stoplight goes out when the brake pedal is
released.
Q: Is the check result normal?
YES : Go to Step 16.
NO : Go to Step 4.
STEP 4. Stop light switch installation status check
Refer to GROUP 35A
Q: Is the check result normal?
YES : Go to Step 5.
NO : Install the stop light switch correctly. Then go to Step
21.
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