#Firing circuit drivers airbag e36 how to#
#Firing circuit drivers airbag e36 code#

Take the measurements below at the C-121 and D-32 harness side connectors. Insert a cable tie (width: 3 mm, thickness: 0.5 mm) between the terminals 33, 34 and the short spring, and then release the short spring.Дo not insert a test probe directly into the terminal of D-32 harness side connector from the connector front side as the connector contact pressure may be weakened. The short spring may not be released due to the insufficient insertion, thus insert for 4 mm or more. To release the connector short spring in the following operations, disconnect this side-airbag module connector, and keep the squib circuit shorted.Дisconnect the D-32 side-airbag module 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. Resistance measurement at the C-121 SRS-ECU connector and the D-32 side-airbag module connector. Replace the front seatback pad and frame assembly (Refer to ) or replace the front seatback (Refer to ). (7)Disconnect the negative battery terminal.

#Firing circuit drivers airbag e36 code#

(6)After erasing the diagnosis code memory, check the diagnosis code again. (5)Connect the negative battery terminal. Insert the resistor harness probe from the back of D-32 harness side connector. (3)Connect special tool dummy resistor (MB991865) to special tool resistor harness (MB991866).Дo 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-32 side-airbag module 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.

#Firing circuit drivers airbag e36 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. (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.

Open circuit to side-airbag module (squib) circuit.

The code is set when the open circuit occurs to the SRS-ECU side-airbag 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 side-airbag module (squib) of impacted side. If the diagnosis code B1C2D is set to SRS-ECU, be sure to diagnose the CAN bus line. Code No.B1C2D Right side-airbag module (squib) system (open circuit of squib circuit) Code No.B1C2D Right side-airbag module (squib) system (open circuit of squib circuit)