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 MANUALSVOLKSWAGEN1996GTI (1H1) V6-2.8L (AAA)REPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULEDIAGRAMSDIAGRAM INFORMATION AND INSTRUCTIONSCIRCUIT AND TERMINAL DESIGNATIONS
1996 Volkswagen GTI (1H1) V6-2.8L (AAA)
Circuit and Terminal Designations
1996 Volkswagen GTI (1H1) V6-2.8L (AAA)SECTION Circuit and Terminal Designations
Several wiring circuits in the vehicle's electrical system are identified with a number or letter designation. These circuits are identified the same in all wiring diagrams and are most commonly shown near the top of each page in the fuse/relay panel portion of the wiring diagram. The circuit designations may also be used to identify switch connector terminals (switch circuits). Following are the most common numbered/lettered circuits:
Terminal (circuit) 1
Ignition distributor low voltage (typically used as an Engine Speed (RPM) signal for the tachometer)
Terminal (circuit) 15
Switch Battery Positive Voltage (B+) from ignition/starter switch
Terminal (circuit) 30
Battery Positive voltage (B+), hot at all times
Terminal (circuit) 31
Ground (GND)
Terminal (circuit) 50
Starter control; switched B+ from ignition/starter switch
Terminal (circuit) 56
Switched headlight B+ from light switch
Terminal (circuit) 58
Switched parking light, taillight. illumination B+ from light switch
Terminal (circuit) S (SU)
Key in ignition circuit; switched B+ from ignition/starter switch
Terminal (circuit) X
Load reduction circuit; switched B+ from load reduction relay
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.