STEP 5. Voltage measurement at the SRS-ECU connector.
(1) Check that the negative battery terminal is disconnected. If the negative battery terminal is connected, disconnect it.
(2) While pushing the part "A" indicated in the figure of the harness side connector, turn the lock lever to the direction of the arrow to release the lock lever, and disconnect the SRS-ECU connector.
(3) caution | To release SRS-ECU connector short spring in the following operations, disconnect this clock spring connector, and keep the squib circuit shorted. |
Disconnect the clock spring connector.
(4) caution | Insert an insulator such as a cable tie to a depth of 4mm (0.16 inch) or more, otherwise the short spring will not be released. |
Insert the insulator [3 mm (0.12 inch) wide, 0.5 mm (0.02 inch) thick] such as cable tie between the DQ1-, DQ1+ line, and then release the short spring <B1403>.
Insert the insulator [3 mm (0.12 inch) wide, 0.5 mm (0.02 inch) thick] such as cable tie between the DQ2-, DQ2+ line, and then release the short spring <B1483>.
(5) Connect the negative battery terminal.
(6) Electric motor switch: ON
(7) Take the measurements below at the harness side connector.- Voltage between DQ1-, DQ1+ line and body ground <B1403>
OK: 1 V or less
- Voltage between DQ2-, DQ2+ line and body ground <B1483>
OK: 1 V or less
(8) Disconnect the negative battery terminal.
Is the check result normal?
Go to Step 6. Repair the wiring harnesses DQ1-, DQ1+ line <B1403> or DQ2-, DQ2+ line <B1483> between the clock spring connector and the SRS-ECU connector.