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Resistance measurement between the D-11 intermediate connector terminal No. 39/40 and the D-11 intermediate connector (floor harness side) terminal No. Repair the wiring harness between the C-121 harness side connector terminal No. 40 and the D-11 intermediate connector (floor wiring harness side) terminal No. (6)Check the continuity between the C-121 harness side connector terminal No. 39 and the D-11 intermediate connector (floor wiring harness side) terminal No. Insert an insulator (width: 3 mm, thickness: 0.5 mm) such as cable tie between the terminal 39/40 and the short spring, and release the short spring.ĭo not insert a probe directly into the terminal of D-11 intermediate connector from the connector front side as the connector contact pressure may be weakened.Ĭheck the continuity between the C-121 harness side connector terminal No. Therefore, insert the insulator for 4 mm or more. The short spring may not be released due to the insufficient insertion. To release the SRS-ECU connector short spring in the following operations, disconnect this D-11 intermediate connector, and keep the squib circuit shorted.ĭisconnect the D-11 intermediate connector unlock the connector by sliding the locking button to the direction of the arrow as shown in the figure, and then disconnect the connector. (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 C-121 SRS-ECU connector.
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Resistance measurement at the C-121 SRS-ECU connector and the D-11 intermediate connector. (7)Disconnect the negative battery terminal.
#B1b02 air bag code code#
(6)After erasing the diagnosis code memory, check the diagnosis code again. (5)Connect the negative battery terminal. Insert the probe of resistor harness, to which the dummy resistor is installed, from the back of D-11 intermediate connector (floor wiring harness side). (3)Connect special tool dummy resistor (MB991865) to special tool resistor harness (MB991866).ĭo not insert a probe directly into the terminal from the connector front side as the connector contact pressure may be weakened. (2)Disconnect the D-11 intermediate connector unlock the connector by sliding the locking button to the direction of the arrow as shown in the figure, and then disconnect the connector. If the negative battery terminal is connected, disconnect it. (1)Check that the negative battery terminal is disconnected. Diagnosis check by dummy resistor connection.
#B1b02 air bag code how to#
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ). (3)Disconnect the negative battery terminal. (2)After erasing the diagnosis code memory, check the diagnosis code again.
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(1)Connect the negative battery terminal. Check whether the diagnosis code is reset. Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ). Use M.U.T.-III to diagnose the CAN bus lines.
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Open circuit to the curtain air bag module (squib) circuit.The code is set when the open circuit occurs to the SRS-ECU curtain air bag module (squib) circuit. In case of side collision, when the impact exceeding the threshold is applied to the vehicle, and when the impact is simultaneously detected (turned ON) by the side impact sensor as well as by the analogue G-sensor in SRS-ECU, the electric current is supplied from SRS-ECU to the curtain air bag module (squib) of impacted side. If the diagnosis code B1B22 is set to SRS-ECU, be sure to diagnose the CAN bus line. Code No.B1B22 Right curtain air bag module (squib) system (open circuit of squib circuit) Code No.B1B22 Right curtain air bag module (squib) system (open circuit of squib circuit)