Vehicle Starting and Driving
S-10
2.
Pneumatic pressure
The air pressure gauge indicates the reserve pressure individually for the front and rear service brake
circuits.
The reserve air pressure in each brake circuit must be sufficient for the correct operation of the brake
system.
The STOP warning light comes on in case of low brake pressure in the service brake or parking brake
circuits.
Attention!
If the driver information indicator displays the warning “brake pressure” and the STOP warning light
comes on with the engine running, it will be an indication that the air pressure is excessively low. Do not
drive the vehicle if the air pressure gauge displays low air pressure in one or both brake circuits, as the
service brake could fail resulting in serious accident.
Summary of Contents for XMQ6900J series
Page 116: ...Common trouble and elimination C 16 Fault symptom Possible cause Eliminating method speed...
Page 128: ...Appendix A 4 Air braking schematic diagram...
Page 129: ...Appendix A 4 Electric schematic diagram of the complete vehicle 1...
Page 130: ...Appendix A 4 Electric schematic diagram of the complete vehicle 2...
Page 131: ...Appendix A 4 Electric schematic diagram of the complete vehicle 3...
Page 132: ...Appendix A 4 Electric schematic diagram of the complete vehicle 4...
