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19.2 Roll Bar (RB) (Crash Deployment)   >   12 Diagnostics Malfunction memory

Preparation for testing Connect impulse counter according to connection diagram, see register 0. Electrical wiring diagram note: See "Electrical Troubleshooting Manual, Model 129" Description: Functional group Model 129 06 Malfunction table, impulse readout, roll bar control unit Impulse readout Possible cause Test step1)/remedy 1 No malfunctions stored   2 Roll bar control unit (N53) 23 2.0 3 Voltage supply 23 3.0 4 Driver seat belt lock relay (K18/2), open circuit, short circuit to terminal 30 and/or 31 23 4.0 5 Passenger seat belt lock relay (K18/3), open circuit, short circuit to terminal 30 and/or 31 23 5.0 6 Roll bar deployment solenoid (Y57/1), open circuit, short circuit to terminal 30 and/or 31 23 6.0 7 Left and/or right rear axle switch, roll bar (S83/2, S83/3), short circuit to terminal 30 and/or 31 23 7.0 8 Roll bar warning lamp (A1e29) 23 8.0 9 SRS warning lamp and/or impulse counter button held too long to erase malfunctions 23 6.0 10 2) SRS control unit (N2/2) 23 7.0 1) Observe preparations for testing. 2) Impulse display 10 indicates that the airbag deployment drivers in the control unit were activated. This impulse readout cannot be erased. The control unit must be replaced.