Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW1993740IL (E32/2) V8-3982CC 4.0L DOHC (M60)REPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGDESCRIPTION AND OPERATIONCLIMATE CONTROL SYSTEMS, SYSTEM SPECIFICIHKA (AUTOMATIC CLIMATE CONTROL SYSTEM)CONNECTOR PIN ASSIGNMENTS & DESCRIPTION
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)
Connector Pin Assignments & Description
1993 BMW 740iL (E32/2) V8-3982cc 4.0L DOHC (M60)SECTION Connector Pin Assignments & Description
Abbreviations
IHKA Automatic climate control
A Output
E Input
Max Maximum
AUTO Automatic
(control in accordance with the flap programs stored in the control unit)
Poti Potentiometer
Used in the following charts:
IHKA Control Unit Connector X613 Pin Assignments - Part 1
IHKA Control Unit Connector X613 Pin Assignments - Part 2
IHKA Control Unit Connector X614 Pin Assignments - Part 1
IHKA Control Unit Connector X614 Pin Assignments - Part 2
IHKA Control Unit Connector X614 Pin Assignments - Part 3
IHKA Control Unit Connector X610 Pin Assignments - Part 1
IHKA Control Unit Connector X610 Pin Assignments - Part 2
IHKA Control Unit Connector X610 Pin Assignments - Part 3
IHKA Control Unit Connector X611 Pin Assignments - Part 1
IHKA Control Unit Connector X611 Pin Assignments - Part 2
IHKA Operating Unit Connector X612 Pin Assignments - Part 1
IHKA Operating Unit Connector X612 Pin Assignments - Part 2
IHKA Operating Unit Connector X612 Pin Assignments - Part 3
Connector Test Adapters
IHKA Automatic climate control
A Output
E Input
Max Maximum
AUTO Automatic
(control in accordance with the flap programs stored in the control unit)
Poti Potentiometer
Used in the following charts:
IHKA Control Unit Connector X613 Pin Assignments-Part 1:
IHKA Control Unit Connector X613 Pin Assignments - Part 1
IHKA Control Unit Connector X613 Pin Assignments-Part 2:
IHKA Control Unit Connector X613 Pin Assignments - Part 2
IHKA Control Unit Connector X614 Pin Assignments-Part 1:
IHKA Control Unit Connector X614 Pin Assignments - Part 1
IHKA Control Unit Connector X614 Pin Assignments-Part 2:
IHKA Control Unit Connector X614 Pin Assignments - Part 2
IHKA Control Unit Connector X614 Pin Assignments-Part 3:
IHKA Control Unit Connector X614 Pin Assignments - Part 3
IHKA Control Unit Connector X610 Pin Assignments-Part 1:
IHKA Control Unit Connector X610 Pin Assignments - Part 1
IHKA Control Unit Connector X610 Pin Assignments-Part 2:
IHKA Control Unit Connector X610 Pin Assignments - Part 2
IHKA Control Unit Connector X610 Pin Assignments-Part 3:
IHKA Control Unit Connector X610 Pin Assignments - Part 3
IHKA Control Unit Connector X611 Pin Assignments-Part 1:
IHKA Control Unit Connector X611 Pin Assignments - Part 1
IHKA Control Unit Connector X611 Pin Assignments-Part 2:
IHKA Control Unit Connector X611 Pin Assignments - Part 2
IHKA Operating Unit X612 Pin Assignments-Part 1:
IHKA Operating Unit Connector X612 Pin Assignments - Part 1
IHKA Operating Unit X612 Pin Assignments-Part 2:
IHKA Operating Unit Connector X612 Pin Assignments - Part 2
IHKA Operating Unit X612 Pin Assignments-Part 3:
IHKA Operating Unit Connector X612 Pin Assignments - Part 3
Connector Test Adapters:
Connector Test Adapters
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.