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Q.
Is diagnosis code 34 set?
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(1)Disconnect the negative battery
terminal.
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![](../../../img/52/AC311438AG00ENG.png)
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(2)Disconnect connectors C-146, and
then reconnect them. (3)Connector the negative battery
terminal. (4)Erase the diagnosis code memory, and check
the diagnosis code.
Q.
Is diagnosis code 4A set?
Go to Step
3.
The
procedure is complete. It is assumed that diagnosis code 4A
set as connector C-146 was engaged improperly.
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(1)Disconnect the negative battery
terminal.
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![](../../../img/52/AC311438AG00ENG.png)
![](../../../img/52/AC313481AO00ENG.png)
![](../../../img/52/AC208384AP00ENG.png)
![](../../../img/52/AC313481AP00ENG.png)
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(2)Disconnect connectors C-146,
G-22 and G-01, and then reconnect them. For connector G-01,
use a flat-tipped screwdriver to pull out the locking button
at the harness side connector, and then disconnect the
connector. (3)Connector the negative battery
terminal. (4)Erase the diagnosis code memory, and check
the diagnosis code.
Q.
Is diagnosis code 4A set?
Go to Step
4.
The
procedure is complete. It is assumed that diagnosis code 4A
set as connector C-146, G-22 or G-01 was engaged
improperly.
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(1)Disconnect the negative battery
terminal.
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![](../../../img/52/AC313481AP00ENG.png)
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(2) Disconnect intermediate
connector G-22 (connection between curtain air bag harness
and floor harness).
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![](../../../img/52/AC006042CC00ENG.png)
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(3)Connect special tool dummy
resistor (MB991865) to special tool resistor harness
(MB991866). (4)
caution |
Do not insert a test probe
into the terminal from its front side directly
as the connector contact pressure may be
weakened.
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Connect special tool (MB991884) to the G-22 harness
side connector by back probing. (5)Connect the negative
battery terminal. (6)Erase diagnosis code memory, and
then check the diagnosis code.
Q.
Is diagnosis code 4A set?
Go to Step
5.
Go to Step
6.
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(1)Disconnect the negative battery
terminal.
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![](../../../img/52/AC311438AG00ENG.png)
![](../../../img/52/AC313481AP00ENG.png)
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(2)Disconnect SRS-ECU connector
C-146.
danger |
To prevents the air bag from
deploying unintentionally, disconnect the
curtain air bag harness connector G-22 to short
the squib circuit.
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![](../../../img/52/AC208764AD00ENG.png)
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(3)
caution |
Insert an insulator such as a
cable tie to a depth of 4mm or more, otherwise
the short bar will not be released.
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Insert a cable tie [3 mm wide, 0.5 mm
thick] between terminals 27, 28 and the short spring
to release the short spring.
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![](../../../img/52/AC100326AR00ENG.png)
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(4)
caution |
Do not insert a test probe
into the terminal from its front side directly
as the connector contact pressure may be
weakened.
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Resistance measurement between C-146 harness side
connector terminals 27 and 28. OK: Open
circuit
Q.
Is the check result normal?
Go to Step
7.
Repair
the harness wire between SRS-ECU connector C-146 (terminal
No.27 and 28) and harness side connector G-22 (terminal
No.1and 2).
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![](../../../img/52/AC313481AO00ENG.png)
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(1)Disconnect the negative battery
terminal.
danger |
To prevents the air bag from
deploying unintentionally, disconnect the
curtain air bag module connector G-01 to short
the squib circuit.
|
|
![](../../../img/52/AC208384AP00ENG.png)
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(2)Disconnect curtain air bag
module connector G-01. Use a flat-tipped screwdriver to pull
out the locking button at the harness side connector, and
then disconnect the connector. (3) Disconnect
intermediate connector G-22 (connection between curtain air
bag harness and floor harness).
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![](../../../img/52/AC303537AH00ENG.png)
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(4)
caution |
Insert an insulator such as a
cable tie to a depth of 4mm or more, otherwise
the short spring will not be released.
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Insert a cable tie [3 mm wide, 0.5 mm
thick] between terminals 1, 2 and the short spring to
release the short spring.
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![](../../../img/52/AC303538AF00ENG.png)
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(5)
caution |
Do not insert a test probe
into the terminal from its front side directly
as the connector contact pressure may be
weakened.
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Resistance measurement between G-22 curtain air bag
module (LH) side connector terminals 1 and
2. OK: Open circuit
Q.
Is the check result normal?
Replace the curtain
air bag module (Refer to ).
Repair the harness
wire between curtain air bag module (LH) side connector G-22
(terminal No.1 and 2) and curtain air bag module connector
G-01 (terminal No.1and 2).
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Q.
Is diagnosis code 4A set?
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Replace the SRS-ECU
(Refer to ).
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An intermittent
malfunction is suspected (Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points ).
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