MODEL | 963, 964 |
with CODE B3H(Water-type secondary retarder) |
Location
Shown on model 963, front coolant expansion reservoir |
B87 | Coolant pressure control sensor |
W20.30-1027-76
The coolant pressure control sensor (B87) is located on the coolant expansion reservoir.
Task
The coolant pressure control sensor (B87) monitors the pressure in the coolant circuit. The signals from the coolant pressure control sensor (B87) are read in directly by the drive control (CPC) control unit (A3). The drive control (CPC) control unit (A3) uses them to calculate the set values for the coolant pressure control solenoid valve (Y53).