Mitsubishi Lancer Evolution IX. Manual — part 600
TROUBLESHOOTING <ACD>
MANUAL TRANSMISSION (FF)
22A-83
Code No.61 Stop lamp switch system
OPERATION
The stop lamp switch judges whether the brake
pedal is depressed or released, and sends the infor-
mation to the 4WD-ECU.
DIAGNOSIS CODE SET CONDITIONS
Code No.61 is set when the stop lamp switch is ON
for more than 15 minutes when the vehicle speed is
above 15 km/h.
PROBABLE CAUSES
• Malfunction of brake pedal
• Malfunction of stop lamp switch
• Damaged harness wires and connectors
• Malfunction of the 4WD-ECU
Stop lamp switch system circuit
BATTERY
STOP LAMP SWITCH
<LH DRIVE VEHICLES> OR
<RH DRIVE VEHICLES>
<LH DRIVE VEHICLES> OR
<RH DRIVE VEHICLES>
4WD-ECU
RELAY
BOX
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet
TROUBLESHOOTING <ACD>
MANUAL TRANSMISSION (FF)
22A-84
DIAGNOSIS
STEP 1. Check that the stop lamps illuminate and
extinguish normally.
The stop lamps should illuminate when the brake
pedal is depressed, and extinguish when released.
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Go to Step 2.
STEP 2. Check the brake pedal height.
Refer to GROUP 35A
− On-vehicle Service, Brake
Pedal Check and Adjustment
.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Adjust the brake pedal height.
STEP 3. Check the stop lamp switch.
Refer to GROUP 35A
− Brake Pedal and Stop Lamp
Switch Continuity Check
Q: Is the check result normal?
YES :
Go to Step 4.
NO :
Replace the stop lamp switch.
STEP 4. M.U.T.-II/III data list
Item 56: Stop lamp switch (Refer to data list refer-
ence table
).
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
− How to Cope with Intermittent
NO :
Go to Step 5.
STEP 5. Connector check: C-102 stop lamp
switch connector
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the defective connector.
STEP 6. Measure the voltage at stop lamp switch
connector C-102.
Disconnect the stop lamp switch connector, and
measure the voltage between terminal No.2 and
earth at the harness side.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Go to Step 12.
AC309520
Connector: C-102
Harness side
Brake pedal
AC
4
3
2
1
C-102
AC309520
Connector: C-102
Harness side
Brake pedal
AC
4
3
2
1
C-102
TROUBLESHOOTING <ACD>
MANUAL TRANSMISSION (FF)
22A-85
STEP 7. Measure the voltage at 4WD-ECU
connector C-26.
(1) Connect the stop lamp switch connector C-102.
(2) Measure the voltage between 4WD-ECU
connector C-26 terminal No.38 and earth.
OK:
Brake pedal depressed: System voltage
Brake pedal not depressed: 1 V or less
Q: Is the check result normal?
YES :
Go to Step 8.
NO :
Go to Step 10.
STEP 8. Connector check: C-26 4WD-ECU
connector
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Go to Step 9.
NO :
Repair the defective connector.
STEP 9. M.U.T.-II/III data list
Item 56: Stop lamp switch (Refer to data list refer-
ence table
).
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
− How to Cope with Intermittent
).
NO :
Replace the 4WD-ECU.
AC311002
4WD-ECU
Harness side
C-26 (Y)
AC
Connector: C-26
4WD-ECU
C-26 (Y)
Rear console
assembly
<LH drive vehicles>
<RH drive vehicles>
AC311002
4WD-ECU
Harness side
C-26 (Y)
AC
Connector: C-26
4WD-ECU
C-26 (Y)
Rear console
assembly
<LH drive vehicles>
<RH drive vehicles>
TROUBLESHOOTING <ACD>
MANUAL TRANSMISSION (FF)
22A-86
STEP 10. Connectors check: C-26 4WD-ECU
connector, C-105 J/C (6), C-124 intermediate
connector.
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Go to Step 11.
NO :
Repair the defective connector.
AC311002
4WD-ECU
Harness side
C-26 (Y)
AC
Connector: C-26
4WD-ECU
C-26 (Y)
Rear console
assembly
<LH drive vehicles>
<RH drive vehicles>
AC311015AF
Connector: C-105 <LH drive vehicles>
C-105
AC311016AC
Connector: C-105 <RH drive vehicles>
C-105
AC311015AB
Connector: C-124 <LH drive vehicles>
C-124
AC311016AF
Connector: C-124 <RH drive vehicles>
C-124
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