Applus Technologies, Inc. Smog DADdy User Manual VER 8.2 Page 44 of 55
Auxiliary Power and Alternate Ground Operation
The Smog DADdy unit will attempt to communicate with vehicles that are missing ground
and/or battery connections as described below.
Auxiliary Power
If no battery voltage is present on pin 16 of the vehicle’s DLC:
Wired Smog DADdy - When connecting to vehicles with insufficient battery voltage present
on pin 16 of the DLC connector, the ‘Vehicle Voltage’ indicator will not illuminate. The unit will
still attempt to communicate even if this indicator is not lit, no additional user intervention is
required.
Wireless Smog DADdy - The Smog DADdy unit shuts down after 6 minutes of inactivity to
conserve the internal battery and wakes up if sufficient battery voltage on pin 16 is detected or
a USB connection is established. If the vehicle has insufficient battery voltage present on pin 16
of the DLC, reconnect using a USB tethered connection or by using the USB vehicle charging
adapter.
NOTE: A wireless connection can be re-attempted after waking up the device using either of
the methods described above.
Alternate Ground
If no signal or chassis ground is present on the vehicle’s DLC:
Wired and Wireless Smog DADdy - If the unit is unable to establish
vehicle communications, the vehicle’s DLC may have no signal or chassis
ground present. Connect the alternate ground cable to the DAD and
attach the grounding clamp to a known good ground point on the vehicle.
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