Mitsubishi Colt Ralliart. Manual — part 239
TROUBLESHOOTING
ANTI-SKID BRAKING SYSTEM (ABS)
35B-48
Q: Is the result normal?
YES :
Go to Step 3.
NO :
Repair the wiring harness between the
ABS-ECU and the battery.
STEP 3. Check whether the diagnosis code is
reset.
CAUTION
Before connecting or disconnecting the
M.U.T.-III, turn the ignition switch to the "LOCK"
(OFF) position.
(1) Turn the ignition switch to the "ON" position.
(2) Erase the diagnosis code.
(3) Turn the ignition switch to the "LOCK" (OFF)
position.
(4) Turn the ignition switch to the "ON" position.
(5) Check if the diagnosis code is set.
(6) Turn the ignition switch to the "LOCK" (OFF)
position.
(7) Disconnect M.U.T.-III.
Q: Is code No.C1278 set?
YES :
Replace the hydraulic unit (integrated with
ABS-ECU) (Refer to
).
NO :
The malfunction is intermittent. Refer to
GROUP 00, How to Use
Troubleshooting/Inspection Service Points
−
How to Cope with Intermittent Malfunction
.
AC206895
AC
Diagnosis
connector
MB991827
MB991824
MB991910
Main
Index
Group
TOC
TROUBLESHOOTING
ANTI-SKID BRAKING SYSTEM (ABS)
35B-49
Code No.C1860: ABS-ECU power supply system (abnormal voltage increase)
OPERATION
The ABS-ECU is energized by the ignition switch
(IG1) through multi-purpose fuse 40 and the
ABS-ECU terminal 20.
DIAGNOSIS CODE SET CONDITIONS
This diagnosis code will be set if the battery voltage
increases to 16.9 V or more while the engine is run-
ning.
PROBABLE CAUSES
• Defective battery
• Damaged wiring harness or connector
• Malfunction of the hydraulic unit (integrated with
ABS-ECU)
• Charging system failed
DIAGNOSIS PROCEDURE
STEP 1. Check the battery and charging system.
Check the battery and charging system.
• Ignition switch: ON
• Engine: Start
• Engine speed: Approximately 2500 rpm
Measure the voltage between the battery terminals.
OK: 16 V or less
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Inspection, repair or replace the charging
system component(s).
STEP 2. Check whether the diagnosis code is
reset.
CAUTION
Before connecting or disconnecting the
M.U.T.-III, turn the ignition switch to the "LOCK"
(OFF) position.
Check again if the diagnosis code is set.
(1) Turn the ignition switch to the "ON" position.
(2) Erase the diagnosis code.
(3) Turn the ignition switch to the "LOCK" (OFF)
position.
(4) Turn the ignition switch to the "ON" position.
(5) Check if the diagnosis code is set.
(6) Turn the ignition switch to the "LOCK" (OFF)
position.
(7) Disconnect M.U.T.-III.
Q: Is code No.C1860 set?
YES :
Replace the hydraulic unit (integrated with
ABS-ECU) (Refer to
).
NO :
The malfunction is intermittent. Refer to
GROUP 00, How to Use
Troubleshooting/Inspection Service Points
−
How to Cope with Intermittent Malfunction
.
AC206895
AC
Diagnosis
connector
MB991827
MB991824
MB991910
Main
Index
Group
TOC
TROUBLESHOOTING
ANTI-SKID BRAKING SYSTEM (ABS)
35B-50
Code No.C1861: ABS-ECU power supply system (abnormal voltage drop)
OPERATION
The ABS-ECU is energized by the ignition switch
(IG1) through multi-purpose fuse 40 and the
ABS-ECU terminal 20.
DIAGNOSIS CODE SET CONDITIONS
If the vehicle speed exceeds 6 km/h when the battery
voltage is 7.6 V or less, the ECU will illuminate the
charge warning light and set this diagnosis code.
NOTE: If the battery voltage is less than 9.6 V or 9.3
V (while the ABS is activating), the ECU will illumi-
nate the charge warning lamp, but will not set diag-
nosis code C1861. If the vehicle speed does not
exceed 6 km/h when the battery voltage is 7.6 V or
less, the ECU will illuminate the charge warning
lamp, but will not set diagnosis code C1861.
PROBABLE CAUSES
• Defective battery
• Damaged wiring harness or connector
• Malfunction of the hydraulic unit (integrated with
ABS-ECU)
• Charging system failed
IGNITION
SWITCH (IG1)
ELECTRIC
POWER
STEERING
SYSTEM
ABS-ECU
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
Power Supply Circuit
Main
Index
Group
TOC
TROUBLESHOOTING
ANTI-SKID BRAKING SYSTEM (ABS)
35B-51
DIAGNOSIS
STEP 1. Check the battery and charging system.
Check the battery and charging system.
• Ignition switch: ON
• Engine: Start
• Engine speed: Approximately 2500 rpm
Measure the voltage between the battery terminals.
OK: 16 V or less
Q: Is the check result normal?
YES :
Go to Step 2.
NO :
Inspection, repair or replace the charging
system component(s).
STEP 2. Check the ACS-ECU connector A-05.
Check the connectors, for loose, corroded or dam-
aged terminals, or terminals pushed back in the con-
nector.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair or replace the damaged
component(s). Refer to GROUP 00, How to
Use Troubleshooting/Inspection Service
Points
− Connector Inspection Service
Points
.
STEP 3. Voltage measurement at ABS-ECU
connector A-05.
(1) Disconnect the connector A-05, and connect
special tool ABS Check Harness (MB991951) to
the wiring harness-side connector.
NOTE: Connect special tool ABS Check Harness
(MB991951) to the ABS-ECU.
(2) Turn the ignition switch to the "ON" position.
(3) Start the engine.
AC313863AB
Connector: A-05
Harness side
A-05(B)
AC313863AB
Connector: A-05
Harness side
A-05(B)
AC601354AB
ABS-ECU
MB991951
Check connector
A-05 Harness connector
Main
Index
Group
TOC
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст