Mitsubishi Colt Ralliart. Manual — part 624
TROUBLESHOOTING
ACTIVE STABILITY CONTROL SYSTEM (ASC)
35C-41
STEP 13. Voltage measurement: A-05 ASC-ECU
connector
(1) Disconnect the connector, connect the ABS
check harness (Special tool: MB991984) to the
ASC-ECU side connector and harness-side
connector, and then measure the voltage at the
special tool connector side.
(2) Ignition switch: ON
(3) Measure the voltage between the power supply
and signal terminals in the wheel speed sensor
circuit and body earth.
OK:
<Power supply terminal> Approximately 12
V
<Signal terminal> 0.4 to 1.3 V
Q: Is the check result normal?
YES :
Go to Step 22.
NO (Not normal at the terminal No. 29 or 28) :
Go
to Step 14.
NO (Not normal at the terminal No. 34 or 13) :
Go
to Step 16.
NO (Not normal at the terminal No. 30 or 8) :
Go to
Step 18.
NO (Not normal at the terminal No. 11 or 10) :
Go
to Step 20.
STEP 14. Connector check: A-05 ASC-ECU
connector, A-29 wheel speed sensor <FR>
connector
Q: Is the check result normal?
YES :
Go to Step 15.
NO :
Repair the damaged connector.
AC601083
Connector: A-05
AB
A-05(Black)
Harness side
AC601085AB
MB991984
Check connector
ASC-ECU
ASC-ECU harness connector
Wheel speed sensor
position
Checking terminal
Power
supply
terminal
Signal
terminal
Right front wheel
No. 29
No. 28
Left front wheel
No. 34
No. 13
Right rear wheel
No. 30
No. 8
Left rear wheel
No. 11
No. 10
AC601083
Connector: A-05
AB
A-05(Black)
Harness side
AC601084
Connector: A-29
AB
Harness
side
A-29(black)
Main
Index
Group
TOC
TROUBLESHOOTING
ACTIVE STABILITY CONTROL SYSTEM (ASC)
35C-42
STEP 15. Wiring harness inspection: between
A-05 ASC-ECU connector terminal No. 29, 28 and
A-29 wheel speed sensor <FR> connector
terminal No. 2, 1.
Check for short and open circuit in wheel speed sen-
sor <FR> circuit
Q: Is the check result normal?
YES :
Go to Step 22.
NO :
Repair the wiring harness.
STEP 16. Connector check: A-05 ASC-ECU
connector, A-06 wheel speed sensor <FL>
connector
Q: Is the check result normal?
YES :
Go to Step 17.
NO :
Repair the damaged connector.
STEP 17. Check the harness wire between A-05
ASC-ECU connector terminal No. 34, 13 and A-06
wheel speed sensor <FL> connector terminal No.
2, 1.
Check for short and open circuit in wheel speed sen-
sor <FL> circuit
Q: Is the check result normal?
YES :
Go to Step 22.
NO :
Repair the wiring harness.
AC601083
Connector: A-05
AB
A-05(Black)
Harness side
AC601084
Connector: A-29
AB
Harness
side
A-29(black)
AC601083
Connectors: A-05, A-06
AC
A-05(Black)
A-05:
Harness side
A-06: Harness side
A-06 (Black)
AC601083
Connectors: A-05, A-06
AC
A-05(Black)
A-05:
Harness side
A-06: Harness side
A-06 (Black)
Main
Index
Group
TOC
TROUBLESHOOTING
ACTIVE STABILITY CONTROL SYSTEM (ASC)
35C-43
STEP 18. Connector check: A-05 ASC-ECU
connector, B-41 intermediate connector, C-06
wheel speed sensor <RR> connector
Q: Is the check result normal?
YES :
Go to Step 19.
NO :
Repair the damaged connector.
STEP 19. Wiring harness inspection: between
A-05 ASC-ECU connector terminal No. 30, 8 and
C-06 wheel speed sensor <RR> connector
terminal No. 2, 1.
Check for short and open circuit in wheel speed sen-
sor <RR> circuit
Q: Is the check result normal?
YES :
Go to Step 22.
NO :
Repair the wiring harness.
AC601083
Connector: A-05
AB
A-05(Black)
Harness side
AC601092
Connector: B-41
AB
AC601093
Connector: C-06
AB
Harness side
C-06 (Black)
AC601083
Connector: A-05
AB
A-05(Black)
Harness side
AC601093
Connector: C-06
AB
Harness side
C-06 (Black)
Main
Index
Group
TOC
TROUBLESHOOTING
ACTIVE STABILITY CONTROL SYSTEM (ASC)
35C-44
STEP 20. Connector check: A-05 ASC-ECU
connector, B-41 intermediate connector, C-17
wheel speed sensor <RL> connector
Q: Is the check result normal?
YES :
Go to Step 21.
NO :
Repair the damaged connector.
STEP 21. Wiring harness check: between A-05
ASC-ECU connector terminal No. 11, 10 and C-17
wheel speed sensor <RL> connector terminal No.
2, 1.
Check for short and open circuit in wheel speed sen-
sor <RL> circuit
Q: Is the check result normal?
YES :
Go to Step 22.
NO :
Repair the wiring harness.
STEP 22. ABS warning lamp OFF recheck
Drive the vehicle until the vehicle speed reaches
30km/h and check that the ABS warning lamp goes
out.
Q: Does the ABS warning lamp extinguish?
YES :
Go to Step 24.
NO :
Replace the ASC-ECU, and then go to Step
23.
STEP 23. ABS warning lamp OFF recheck
Drive the vehicle until the vehicle speed reaches
30km/h and check that the ABS warning lamp goes
out.
Q: Does the ABS warning lamp extinguish?
YES :
Go to Step 24.
NO :
Intermittent malfunction (Refer to GROUP
00
− How to Cope with Intermittent
.)
AC601083
Connector: A-05
AB
A-05(Black)
Harness side
AC601092
Connector: B-41
AB
AC601094
Connector: C-17
AB
C-17(Black)
Harness side
AC601083
Connector: A-05
AB
A-05(Black)
Harness side
AC601094
Connector: C-17
AB
C-17(Black)
Harness side
Main
Index
Group
TOC
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