A6 Sedan V6-2.8L (AFC) (1995)
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Intake Manifold Change-Over Valve: Diagnostic Aids
LED Test Light
Test Light
A test light is an inexpensive tool used to perform many simple electrical tests that would otherwise require a multimeter. It lights to indicate when
there is Voltage potential between any two test-points in a circuit.
With one probe contacting the battery negative (-) terminal or a known ground (GND) connection, the other probe can be used to check for
Voltage at other points in the circuit. The test light will light when the test probe contacts a Voltage source, and current flows from the Voltage
source to ground (GND).
With one probe contacting a known source of Voltage, the other probe can be used to check for continuity to ground (GND) at other points in the
circuit. Current will flow and the test light will light when the test-point provides the known Voltage source with a path to ground (GND).
CAUTION: A common test tight (with incandescent bulb) may no longer be used. The bulb's high current draw will damage sensitive electronic
components.
LED Test Light (US 1115)
LED Test Light
Used to check for Voltage reaching components or when searching for malfunctions in a circuit.
Voltage range: 3 to 48 Volts DC
NOTE: This tool has been superseded by Special Tool VAG 1527B, LED Tester. (US 1115 is still considered an acceptable equivalent to VAG
1527B).
LED Tester (VAG 1527B)