© MAHLE
4 | OBD-II Smartbox | Product Use
en
2. Product description
2.1 Application
OBD-II Smartbox provides the following functions when it is
plugged into the car or truck Diagnostic Link Connector (DLC) port:
y
Test OBD-II port before plug in Scantool
y
Monitor voltage during reflash programming
y
Detect communication protocol
y
As Break Out Box
y
Check alternator condition
y
As Power backup for ECU (Keep Alive Memory (KAM) chip)
while replacing car battery
y
As DC power source for other devices
2.2 Scope of delivery
Description
OBD-II Smartbox
2.3 Specifications
Feature
Value/Range
Operating range
7.0 - 30 VDC input
Maximum load
Up to 5.0 Amps output
Overload protection
Yes - PTC fuse (self-healing)
Monitoring voltages
Beeper ON: <11.8V, 15.2-24V, >28V
Off after 30 sec
Volt displays
3 digit LEDs, Resolution: 0.1V
Banana sockets
16 outputs x ø4.0mm with LED lamp in-
dicators
Protocols detected
PWM (J1850), VPW (J1850), ISO 9141-2,
DIS/ISO 14230-4, Canbus (J-2284)
Operating temperature
50-122°F (0 – 50°C)
Permitted humidity
<70%
OBD cable length
5 ft (1.5 m)
Reverse polarity protection
Yes - LED lights up with correct polarity
Battery use on OBD Lamp
3V Lithium Battery (Model: CR1220)
3. Product Use
3.1 Test OBD-II port before plug in scantool
The OBD-II Smartbox performs tests on all 16 pins of the OBD-II
port for abnormalities caused by shorting, reverse polarity, etc.
in order to avoid damage to your scan tool prior to plugging in.
t
Test is carried out with ignition key in the OFF, ON and ENGINE
RUNNING conditions.
3.1.1 Test without ignition key
1.
Connect the OBD-II Smartbox to the OBD-II port on the vehicle.
2.
The testing of the DLC port starts automatically as soon as
the OBD-II Smartbox is plugged into it.
t
This test is to check the condition of all pins before the ignition
key is switched on.
Voltmeter LED
As soon as it powers up, the voltmeter will display voltage input.
Notice the alarm beeps on teh following condition:
y
For 12V system:
The alarm 'beep" will trigger ON (once at
a time for 30 seconds) when the voltage falls below 11.8V
y
For 24V system:
The alarm 'beep" will trigger ON (twice
at a time for 30 seconds) when the voltage falls below 23.8V
Fig. 1:
Voltage alarm
When the battery falls below 11.8V for 12V system or 23.8V for
24V system, the alarm will come on. In this case, you may need
to start the engine to run for some time to charge the battery or
replace with a new battery and then test again.
