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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.
|
Connect special tool (MB991866) to the G-22 harness
side connector by backprobing. (5)Connect the negative
battery terminal. (6)Erase diagnosis code memory, and
then check the diagnosis code.
Q.
Is diagnosis code 4B set?
Go to Step
2.
Go to Step
3.
|
|
(1)Disconnect the negative battery
terminal.
|
![](../../../img/52/AC311438AG00ENG.png)
|
(2)Disconnect SRS-ECU connector
C-146.
|
![](../../../img/52/AC313481AP00ENG.png)
|
(3) Disconnect intermediate
connector G-22 (connection between curtain air bag harness
and
floor harness).
|
![](../../../img/52/AC303987AC00ENG.png)
|
(4)
caution |
Do not insert a test probe
into the terminal from its front side directly
as the connector contact pressure may be
weakened.
|
Resistance measurement between the following
terminals.
- SRS-ECU connector C-146 terminal No.27 and harness
side connector G-22 terminal
No.1
- SRS-ECU connector C-146 terminal No.28 and harness
side connector G-22 terminal
No.2
OK: Less than 2 Ω
Q.
Are the check results normal?
Go to Step
4.
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).
|
![](../../../img/52/AC313481AR00ENG.png)
|
(1)Disconnect the negative battery
terminal.
|
![](../../../img/52/AC208384AP00ENG.png)
|
(2)Disconnect harness side
connector G-22 and curtain air bag module connector G-01,
and
measure at the wiring harness side. 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.
|
![](../../../img/52/AC201287BO00ENG.png)
|
(3)Connect G-22 harness side
connector to special tool resistor harness
(MB991884).
|
![](../../../img/52/AC303985AD00ENG.png)
|
(4)
caution |
Do not insert a test probe
into the terminal from its front side directly
as the connector
contact pressure may be weakened.
|
Resistance measurement between the following
terminals.
- curtain air bag module (LH) side connector G-22
terminal No.1 and special
tool terminal No.1
- curtain air bag module (LH) side connector G-22
terminal No.2 and special tool terminal
No.2
OK: Less than 2 Ω
Q.
Are the check results 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).
|
|
Q.
Is diagnosis code No.4B set?
|
|
Replace the SRS-ECU
(Refer to ).
|
|
|
|
An intermittent
malfunction is suspected (Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service
Points ).
|
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