![](../../../img/35/AC310120AB00ENG.png)
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caution |
Before connecting or
disconnecting the M.U.T.-III, turn the ignition
switch to the "LOCK"
(OFF) position.
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(1)Connect M.U.T.-III to the 16-pin diagnosis
connector. (2)Turn the ignition switch to the "ON"
position. (3)Diagnose the CAN bus line. (4)Turn the
ignition switch to the "LOCK" (OFF) position.
Q.
Is the check result normal?
Go to Step
3.
Repair the
CAN bus line (Refer to GROUP 54F, CAN bus line Diagnostic
flow ).
Then go to Step 2.
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![](../../../img/35/AC310120AB00ENG.png)
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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.
Q.
Is code No.C1860 or C1861 set?
Go to Step
3.
The
procedure is complete.
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Check the battery (Refer to GROUP
54A, Battery test ).
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Q.
Is the check result normal?
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Charge or replace
the battery.
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Check the charging system (Refer to
GROUP 16, Charging system ).
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Q.
Is the check result normal?
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Repair or replace
the charging system component(s).
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![](../../../img/35/AC312620AK00ENG.png)
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(1)Disconnect the connector A-03,
and connect special tool ABS Check Harness (MB991974) to
the wiring harness-side connector.
note |
Do not connect special tool
ABS Check Harness (MB991974) to the
ABS-ECU.
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(2)Turn the ignition switch to the "ON"
position. (3)Measure the voltage between terminal 20 and
earth. OK: System voltage
Q.
Is the check result normal?
Go to Step
7.
Go to Step
6.
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![](../../../img/35/AC312621AC00ENG.png)
![](../../../img/35/AC313139AB00ENG.png)
![](../../../img/35/AC313140AB00ENG.png)
![](../../../img/35/AC313578AC00ENG.png)
![](../../../img/35/AC313579AB00ENG.png)
![](../../../img/35/AC313793AB00ENG.png)
![](../../../img/35/AC313581AB00ENG.png)
![](../../../img/35/AC313582AB00ENG.png)
![](../../../img/35/AC313583AB00ENG.png)
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- ABS-ECU connector A-03
- Junction block connectors C-202 and C-203
- Joint connector C-01 <LH drive vehicles>
or C-33 <RH drive
vehicles> and intermediate connector
C-124
- Ignition switch connector C-307
Check the connectors, for loose, corroded or damaged
terminals, or terminals pushed back
in the connector.
Q.
Is the check result normal?
An open or
short circuit may be present in the power supply line to the
ABS-ECU.
Repair the wiring harness between ABS-ECU connector A-03
terminal 20 and ignition switch connector
C-307 terminal 2. Then go to Step 8.
Repair or
replace the damaged component(s). Then go to Step
8.
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![](../../../img/35/AC310120AB00ENG.png)
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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.
Q.
Is code No.C1860 or C1861 set?
Replace the
hydraulic unit (integrated with ABS-ECU). Then go to Step
8.
It can be
assumed that this malfunction is intermittent. Refer to
GROUP 00, How
to Use Troubleshooting/Inspection Service Points
- How to Cope with Intermittent
Malfunction .
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![](../../../img/35/AC310120AB00ENG.png)
|
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.
Q.
Is code No.C1860 or C1861 set?
Go to Step
1.
The
procedure is complete.
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