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(1)Check that the negative auxiliary battery terminal is disconnected. If the negative
auxiliary battery terminal is connected, disconnect it.
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(2)Use the flat-tipped screwdriver to pull out the locking button of C-10 harness side connector
to the direction of the arrow. After releasing the lock, disconnect the connector.
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(3)Connect the dummy resistor (Special tool: MB991865) to the resistor harness (Special tool:
MB991884). (4)Connect special tool (MB991884) to the C-10 harness side connector. (5)Connect the negative auxiliary battery terminal. (6)After erasing the diagnosis code memory, check the diagnosis code again. (7)Disconnect the negative auxiliary battery terminal.
Q.
Is diagnosis code B1453 set?
Go to Step 2
Replace the curtain air bag module (LH) (Refer to ).
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(1)Check that the negative auxiliary battery terminal is disconnected. If the negative
auxiliary battery terminal is connected, disconnect it.
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(2)Disconnect the B-113. SRS-ECU connector.
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(3)
danger |
To release SRS-ECU wiring harness side connector short spring in the
following operations, disconnect air bag module connector in advance, and keep the squib circuit
shorted.
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Use the flat-tipped screwdriver to pull out the locking button of C-10 harness side connector
to the direction of the arrow. After releasing the lock, disconnect the connector.
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(4)
caution |
The short spring may not be released due to the insufficient insertion. Therefore, insert
the insulator for 4 mm or more.
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Insert an insulator (width: 3 mm, thickness: 0.5 mm) such as cable tie between the terminal
1/2 and the short spring, and release the short spring. (5)Connect the negative auxiliary battery terminal. (6)Electric motor switch to the "ON" position. (7)
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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Measure the voltage between the B-113 harness side connector terminal No. 1/2
and the body earth. OK: 1 V or less (8)Disconnect the negative auxiliary battery terminal.
Q.
Is the check result normal?
Go to Step 3
Repair the wiring harness.
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Q.
Is diagnosis code B1453 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 Cope with
Intermittent Malfunction ).
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