BMW 5 SERIES 1985 E28 Cruise Control

BMW 5 SERIES 1985 E28 Cruise Control 5 SERIES 1985 E28 BMW BMW https://www.carmanualsonline.info/img/1/2735/w960_2735-0.png BMW 5 SERIES 1985 E28 Cruise Control
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BMW 5 SERIES 1985 E28 Cruise Control 
CRUISE CONTROL WITH ELECTRIC ACTUATOR

Group 61 - Chassis Electrics

Produced By:

BMW of North America, Inc

Issued 7/83 
61-09

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BMW 5 SERIES 1985 E28 Cruise Control 
CRUISE CONTROL WITH ELECTRIC ACTUATOR

The electric actuator type cruise control system was intro-

duced on the BMW 733i and 528e models in 1982. From 1983 all

six-cylinder models will use this typ

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BMW 5 SERIES 1985 E28 Cruise Control 
ACTUATOR

CLUTCH SWITCH 
BRAKE SWITCH

CRUISE CONTROL SCHEMATIC

(ELECTRIC ACTUATOR) 
OFF

61-09/1
CABLE

GAS LINKAGE

BRIDGE

(AUTOMATIC)

ECU

SPEEDO

OFF

REED SWITCH

RESUME 
CONST.
R

N

D 
2 
1

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BMW 5 SERIES 1985 E28 Cruise Control 
CRUISE CONTROL SYSTEM TESTS

(ELECTRIC ACTUATOR)

Use BMW Service Test 2013 to check function of system

as follows:

Program: Enter M (Multimeter)

Enter 13 (Frequency out)

Enter 110 (Hz)

Press

E

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BMW 5 SERIES 1985 E28 Cruise Control 
Test at ECU Plug

Component/Circuit 
Result

4. Ignition on—check volt-

age at Terminal #5. 
Control switch RESUME. 
Move lever to RESUME.

Voltage jumps 0 to 12V.

If not, check wiring and

switc

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BMW 5 SERIES 1985 E28 Cruise Control 
FOR CRUISE CONTROL TO BE ENGAGED

PIN 9 MUST SENSE GROUND THROUGH

STOPLIGHTS.

WHEN BRAKE SWITCH IS CLOSED OR

CLUTCH SWITCH IS OPEN, GROUND IS

ELECTRONICALLY REMOVED.

CRUISE CONTROL ELECTRICAL SC

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BMW 5 SERIES 1985 E28 Cruise Control 
CRUISE CONTROL WITH VACUUM SERVO

Group 61 - Chassis Electrics

Produced by

BMW OF NORTH AMERICA, INC.

Revised 7/83 
61-08

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BMW 5 SERIES 1985 E28 Cruise Control 
CRUISE CONTROL

The BMW cruise control is designed to operate between 20

and approximately 90 mph. An electronic control unit (E.C.U.)

controls a vacuum operated servo unit which actuates the

thro

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BMW 5 SERIES 1985 E28 Cruise Control 
SPEEDO CABLE

SIGNAL GENERATOR 
OFF

CONST.

CRUISE CONTROL SCHEMATIC

61-08/1
SERVO

CABLE

VACUUM 
VENT 
GAS LINKAGE

BRAKE SWITCH

P R N D 2 1

ADAPTER

ECU

RESUME

OFF

REED SWITCH
SPEEDO

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BMW 5 SERIES 1985 E28 Cruise Control 
CRUISE CONTROL SYSTEM TESTS - 733i (VACUUM SERVO)

A. Vacuum - Check fit and condition of all vacuum and vent lines.

B. Electrical

TEST AT ECU PLUG 
COMPONENT/CIRCUIT

RESULT

1.
 Measure
 resistan
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