IPA Tools 9008-SE Super MUTT Standard Edition - Manual (Page 18)

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POWER TO TESTER WARNING INDICATORS
VOLTAGE INDICATOR
• When the battery supply voltage drops to 9V or less, the MUTT ® shuts down power to
all circuits and the voltage indicator flashes red.
Charging or replacing the battery is required to continue testing.
• Between 10V-11V, the indicator is RED, showing the battery is too low.
• Between 11V-12V, the indicator is YELLOW, showing the battery is low.
REVERSED POLARITY INDICATOR
• Flashes when battery clamps have been crossed at the battery posts.
• Correcting polarity of the battery terminal clamps deactivates the warning.
• The MUTT ® is internally protected from polarity reversal.
RED TRAILER WARNING INDICATORS
These signals indicate a fault.
OVERLOAD INDICATOR
• When the MUTT ® confronts a constant amperage draw above 20 Amps or a direct
short, the indicator flashes and the beeper sounds.
• Voltage is cycled to the shorted or overloaded circuit in 3 second intervals to aid in
diagnosing the extreme amperage draw. (This function is comparable to an auto
reset circuit breaker). The MUTT ® goes into Pulsar Mode.
OPEN CIRCUIT INDICATOR
• In the instance a selected circuit is not completed through the trailer harness, (e.g.,
a faulty ground or no load detected), the Open Circuit warning flashes and sounds.
CROSSED CIRCUIT WARNING CHARACTERISTICS
• Green Circuit Indicators flash to show troubled circuits.
• In the instance of crossed circuits where a circuit (or circuits) other than the selected
circuit are inadvertently powered by the selected circuit, the unselected Circuit
Indicators flash while the selected indicator remains steady. This is caused by worn
wires or improperly wired plugs on the trailer.
• In some cases, it may be normal for more than one circuit to be operated by a single
circuit, such as certain ABS systems and custom aftermarket lighting.
• Refer to trailer specific wiring schematics for the unit in question.
GROUND INTEGRITY WARNING
(With the Use of Chassis Ground Cable)
Ground Integrity has been explained in the Testing Procedure (Pg. 12, section 9).
When the MUTT ® is first turned on, Ground Integrity and Open Circuit checks are being
performed. The green lights around the Control Knob will blink and disappear one at a
time until only the Ground Integrity light remains solid green. When all the lights blink, it
indicates a poor cable connection or a bad ground. Individual blinking lights indicate an
open circuit.