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Product Use | OBD-II Smartbox | �
OBD-II Smartbox | �
| �
en
3.4 As break out box
The OBD-II Smartbox provides easy access to any of the 16 pins
from the OBD-II DLC port for gathering of signal pulses when diag-
nosing with an oscilloscope, for data logging when used with a Y-
cable, easy activation of blink codes, adjustment of idling rpm, etc.
This OBD-II Smartbox is a pass-through breakout box for the
OBD-II DLC (diagnostic link connector). It can be connected to
your OBD-II compatible tools: such as scan tools, code readers,
monitor readers or data loggers.
Fig. 2:
Utilizing OBD-II Smartbox as a break out box
Any tool that uses a standard test lead or probe that use 4mm
banana plugs (including those with safety heaths) can be plugged
to OBD-II Smartbox’s 16 pins sockets, these include, lab scopes,
multi-meter, logic probes, test lights, etc to read the voltage,
resistance, frequency, pulse width or duty cycle.
Pin 16 sockets is protected by a self- recovery fuse rated at 5 amps.
Jumper cable and Blink Code cables are standard accessory:
—
Jumper cable: for direct pin to pin or stacking connection
while scanning or perform special functions and tests.
—
Blink Code Cable - N/O (Normally Open) contact switch
cable for Reset, Adaptation or codes activation.
Fig. 3:
Jumper cable for OBD-II Smartbox
Fig. 4:
Blink code cable for OBD-II Smartbox
Some Typical Applications:
—
VW - To protect the Scan tool such as aftermarket radios
on VW's
—
GM - Transmitter Programming on some GMs
—
Honda - Set the ECM in SCS mode with your scan tool
connected
—
Lexus - Help diagnose electronics systems (Sirius, GPS)
on pin 6 and 14
—
Bosch - Troubleshoot Bosch controllers that short to
ground
—
Proton - needs to short pin 1 to ground in order to access
into OBD2 functions.
—
Toyota Avanza - the base RPM can only be achieved by
shorting pin 4 and 12
3.� Check alternator condition
The OBD-II Smartbox also can be used to perform a quick Al-
ternator charging check during idling and high RPM conditions.
Fig. 5:
Voltage display
With ignition key in OFF position; plug OBD-II Smartbox into
the car DLC without connecting the scan tool. Switch key to ON
position and the volt LED will display the battery voltage. Start
the engine; observe the voltage display while the engine is idling.
It should be above 12.6 Volts for 12V system or 25.2V for 24V
system. If not, check for loose drive belt.
Then rev engine up to 3,000rpm and observe the change in volt-
age. If the voltage is above 15.2 Volts for 12V battery or 29.2V
for 24V battery, the alarm will beep indicating that the charging
voltage is too high. In this case, the regulator may be faulty and
it needs to be checked.
Then switch ON all electrical loads, rev engine to 2,000rpm and
observe the changes in voltage at the tool. The voltage should
above 13.6 Volts for 12V system and 27.6V for 24V system. If the
voltage is below, check for loose drive belt and the Alternator.
