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#B1b02 air bag code how to
#B1b02 air bag code code

10 and C-207 clock spring connector terminal No. Continuity between C-32 SRS-ECU connector terminal No.9 and C-207 clock spring connector terminal No. 6 and C-207 clock spring connector terminal No. 5 and C-207 clock spring connector terminal No. Take the measurements below at the C-32 and C-207 wiring harness side connectors. (3)Disconnect the C-207 clock spring connector.ĭo not insert a probe directly into the terminal of C-207 harness side connector from the connector front side as the connector contact pressure may be weakened. (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-32 SRS-ECU connector. Resistance measurement at the C-32 SRS-ECU and the C-207 clock spring connectors Insert the resistor harness probe from the back of C-207 harness side connector terminals Nos. (2)Disconnect the C-207 clock spring connector. Diagnosis check by dummy resistor connection. Replace the driver’s air bag module (squib) (Refer to ). (7)Disconnect the negative battery terminal.

#B1b02 air bag code code

Also, at the time of diagnosis code B1B06 check, always the diagnosis code B1B02 is set because the 1st side terminals are disconnected.Īfter erasing the diagnosis code memory, check the diagnosis code again. The diagnosis code B1B06 is set because the 2nd side terminal is disconnected at the time of inspection, but it does not indicate any abnormality. (5)Connect the negative battery terminal.Īt the diagnosis code B1B02 check, always the diagnosis code B1B06 is set. 3 and 4 (2nd squib) of C-205 driver’s air bag module connector. Insert the resistor harness probe from the back of terminals Nos. (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)Slide the outer housing of the C-205 driver’s air bag module connector in the arrow direction shown, and disconnect the connector. If the negative battery terminal is connected, disconnect it. (1)Check that the negative battery terminal is disconnected.

#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. (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.

Disengaged driver’s air bag module (squib) connector.

Open circuit to driver’s air bag module (squib) circuit.

Open circuit due to improper neutral position of the clock spring.

The code is set when the open circuit occurs to the SRS-ECU driver’s air bag module (squib) circuit. Only when the frontal impact exceeding the threshold is simultaneously detected (turned ON) by the front impact sensor as well as by the analogue G-sensor and safing G-sensor in SRS-ECU, the electric current is supplied from SRS-ECU to the driver’s and passenger’s (front) air bag modules (squibs). If the diagnosis code B1B02 (1st squib) or B1B06 (2nd squib) is set to SRS-ECU, be sure to diagnose the CAN bus line. B1B06 Driver’s air bag module (2nd squib) system (open circuit of squib circuit) B1B02 Driver’s air bag module (1st squib) system (open circuit of squib circuit)ĬODE NO. B1B06 Driver’s air bag module (2nd squib) system (open circuit of squib circuit) CODE NO. B1B02 Driver’s air bag module (1st squib) system (open circuit of squib circuit)CODE NO.