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Home >> BMW >> 1989 >> 525i Standard >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Testing >> Pin Assignment

Pin Assignment

NOTE: System incorporates 3 connectors: control unit connector, cruise control actuator connector and cruise control switch connector. See appropriate table for connector pin assignment.
CONTROL UNIT CONNECTOR

Pin & Function Connection
1 - Battery (B+) Voltage (1) Fuse F1
2 - Neutral, Call Accel./Decel. (1) S28 Cruise Control Switch
3 - Park/Neutral (1) S3 Auto. Trans. Range Switch
4 - Accelerate (1) S28 Cruise Control
5 - Call (1) S28 Instrument Cluster
6 - Speed Signal (1) A2 Instrument Cluster
7 - Delay (1) S28 Cruise Control Switch
8 - Electromagnet Clutch B+ Volts (2) M25 Cruise Control Actuator
9 - Clutch/Brake (1) S29 Brake Light Switch I/S32 Clutch Switch
13 - Drive Motor (2) M25 Cruise Control Actuator
17 - Not Used Not Used
23 - Ground (1) Terminal 31
24 - T.V. Potentiometer B+ Volts (2) M25 Cruise Control Actuator
25 - Drive Motor (2) M25 Cruise Control Actuator
26 - T.V. Potentiometer B+ Volts (1) M25 Cruise Control Actuator
(1) Input.
(2) Output.
CRUISE CONTROL ACTUATOR CONNECTOR

Pin & Function Connection
1 - Drive Motor Control (1) Control Unit
2 - Ground For Clutch (1) Control Unit
3 - Clutch Operation (1) Control Unit
4 - Drive Motor Control (1) Control Unit
5 - Voltage For Throttle Valve Potentiometer (1) Control Unit
6 - Throttle Valve Potentiometer (2) Control Unit
8 - Ground (1) Ground Terminal 31
(1) Input.
(2) Output.
CONTROL SWITCH CONNECTOR

Pin & Function Connection
1 - Battery Voltage (1) Fuse F1
2 - Call (2) Control Unit
3 - Accelerate (2) Control Unit
4 - Neutral, Call, Accelerate, Decelerate (2) Control Unit
7 - Decelerate (2) Control Unit
(1) Input.
(2) Output.