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(1)Disconnect the negative battery terminal.
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(2)Disconnect seat belt pre-tensioner (passenger’s side) connector D-23 <LHD>
or D-15 <RHD>. Use a flat-tipped screwdriver to pull out the locking button at the harness
side connector, and then disconnect the connector.
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(3)Connect special tool dummy resistor (MB991865) to special tool resistor harness (MB991884). (4)Connect special tool (MB991884) to the D-23 <LHD> or D-15 <RHD> harness
side connector. (5)Connect the negative battery terminal. (6)Erase diagnosis code memory, and then check the diagnosis code.
Q.
Is diagnosis code B1612 set?
Go to Step 2.
Replace the seat belt with pre-tensioner (passenger’s side) (Refer to ).
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(1)Disconnect the negative battery terminal.
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(2)Disconnect SRS-ECU connector C-130.
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(3)
danger |
To prevents the seat belt pre-tensioner from deploying unintentionally, disconnect the
seat belt pre-tensioner (passenger’s side) connector D-23 <LHD> or D-15 <RHD>
to short the squib circuit.
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Disconnect seat belt pre-tensioner (passenger’s side) connector D-23 <LHD>
or D-15 <RHD>. Use a flat-tipped screwdriver to pull out the locking button at the harness
side connector, and then disconnect the connector.
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(4)
caution |
Insert an insulator such as a cable tie to a depth of 4 mm 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 27, 28
and the short spring to release the short spring. (5)Connect the negative battery terminal. (6)Turn the ignition switch to the "ON" position,
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(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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Voltage measurement between C-130 harness side connector terminals 27, 28 and body earth. OK: 1 V or less
Q.
Is the check result normal?
Go to Step 3.
Repair the harness wires between SRS-ECU connector C-130 (terminal No.27 and 28)
and the seat belt pre-tensioner (passenger’s side) connector D-23 <LHD> or D-15 <RHD>
(terminal No.2 and 1)
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Q.
Is diagnosis code B1612 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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