dHSB bus stop brake relay
|  | Terminal connection diagram
|  | Test steps
|  | Notice: variable signal
Terminal connection diagram Test steps Replace dHSB relay by a new one, or after removing the relay, measure the resistance directly between the winding contacts 85 and 86. RTarget = 285-310 Ω. Open S2 plug connection. For the following steps, bring one test probe of the ohmmeter into contact with the vehicle ground. Measure resistance at corresponding contact of cable 2. RTarget = 285-310 Ω. If R = RTarget, continue with 4. S3 socket connection: Measure resistance at supply cable to winding start of the dHSB relay (pin contact 86). RTarget = 285-310 Ω. S3: Measure resistance at supply cable to winding end of the dHSB relay (pin contact 85) and ground point M. RTarget = 0 Ω. Notice: variable signal The assignment to a connection of the transmission control unit is accomplished in the data record and is vehicle-specific.
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