EMR no. | Display of actual values with HHT | Actual value no. FDS/FSS | Operation/requirement | Specified value HHT (FDS/FSS) | Note |
28 | Parking brake | EMR/M10 | Ignition: ON. Parking brake operated or terminal 15 switched to input ADR2. Release parking brake or open input ADR2. |
ON (+01111) OFF (+01011) | Input ADR2 can be checked. This input can be connected differently to the vehicle (e.g. neutral position on transmission), therefore if necessary obtain documents or a description of the engaging process from the customer etc. On vehicles which are delivered from the plant with a power take-off, this input is switched by the parking brake for safety reasons. On these vehicles the input for the parking brake can be checked: |
The figure underlined indicates the actual value concerned (this value may only be 0 or 1) | If OFF (+01011) is displayed when the parking brake is operated (warning lamp for the parking brake comes on): – check relay K1 on the power take-off unit panel. – cable/connector or voltage supply at relay open-circuited. – cable/connector to electrical module connector VII, pin 18/9 open-circuited. If OFF (+01011) is displayed when the parking brake is operated (warning lamp for the parking brake does not come on): – check pressure switch for the parking brake. – check cable/connectors on the pressure switch. |