Lite-Check 912 User manual

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CERTIFIER MODEL 912
ABS TESTING

ABS Testing Certifier 912
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Page 2 of 5# 87003 – REV 2.0.0 – Oct. 2013
Revision History:
Name Date Changes Version #
Gene Ambacher October 6, 2013 Initial Draft 1.0.0
Gene Ambacher October 14, 2013 Final Draft 2.0.0

Certifier 912 ABS Testing
Page 3 of 5# 87003 – REV 2.0.0 – Oct. 2013
1. Connect the CERTIFIER 912 to the trailer being tested via the 7-way cable and
air-lines.
IMPORTANT
Be sure that the test station is in operational mode with power and air connected
The 912 uses the Trailer PLC connection and OEM’s specific ABS software to
perform the all ABS configuration and system testing.

ABS Testing Certifier 912
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Page 4 of 5# 87003 – REV 2.0.0 – Oct. 2013
2. Press the “ABS” button on the tester panel. This will supply power to the trailer
ECU and turn on the tester panel AUX LED.
3. Open the correct manufacturers’ ABS software icon on the 912 computer desk
top. The software will automatically pull all information from the ECU and display
it on the computer screen.
4. Testing ABS configuration:
Note: Wheels with sensors will need to be raised off the ground.
Press the “SELECT” or (D) key on the tester panel once to charge the air
supply/emergency line. This will turn on the “EMERGENCY” LED on the
tester panel, and release the spring/parking brakes to enable you to spin the
wheels.
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Certifier 912 ABS Testing
Page 5 of 5# 87003 – REV 2.0.0 – Oct. 2013
 Push the “SELECT” or (D) button on the tester panel a second time. This will
activate the service/brake supply line, the tester panel, emergency, and service
brakes, turn on the AUX LED’s, and apply the brakes.
6. Pressing the “Brake” button on the tester panel or remote control releases the
SERVICE brakes. The brake can be cycled on and off to allow for full
manufacturers’ ABS testing.
7. Perform all the required ABS tests with the manufacturers’ software.

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CERTIFIER MODEL 912
CERTIFIER 912 Brake Timing Test

CERTIFIER 912 Brake Timing Test
Page 2 of 9 # 87005 REV. 2.0.0 – OCT. 2013
Revision History:
Name Date Changes Version #
Gene Ambacher October 5, 2013 Initial Draft 1.0.0
Gene Ambacher October 14, 2013 Final Draft 2.0.0

Brake Timing Test CERTIFIER 912
# 87005 REV. 2.0.0 – OCT. 2013 Page 3 of 9
CERTIFIER 912 Brake Timing Test
Entering the Vehicle Information
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1. Input the VIN # of the vehicle
2. Input the OPERATOR name
3. (Option) Input the CUSTOMER name
4. (Option) Input the ORDER#
5. (Option) Input up to 6 USER DEFINED FIELDS identifying type of trailer, # of
axles, ABS, brake system, and etc..
Setting up for 121 brake testing
Non-Towing style trailer
1. Insert a minimum of 1 transducer in the Service Brake chamber, and 1
transducer in the Emergency Brake chamber furthest from the relay valve.
Towing style trailer
1. Insert a minimum of 1 transducer in the Service Brake chamber, and 1
transducer in the Emergency Brake chamber furthest from the relay valve.
2. With a 50 c.i. canister connected to both of the output glad hands, connect a
transducer in the Service output.
In the CERTIFER software, go to the HUB tab and label the transducers by their
location. EMERGENCY, SERVICE, or DOLLY, 1,2,3, and etc.
*If it can be proven through engineering analysis that other brake chambers are closer
to valve or have less air fittings than the chamber being tested, then it is sufficient.
**If there are more axles, lift axles, or any other reason why there would be additional
hose length or air fittings required, then additional transducers should be inserted into
those brake chambers.
A calibration test should be performed at least once a week. This file may be used, in
addition to final trailer reports, to prove compliance of the tester and the trailer.
Note: These instructions are assuming that the CERTIFIER 912 is powered on, properly
calibrated to meet 121 standards (see Calibration and Self-Test of CERTIFIER 912),
and the “Vehicle Information” tab has been completed.

CERTIFIER 912 Brake Timing Test
Page 4 of 9 # 87005 REV. 2.0.0 – OCT. 2013
Performing a full test on a “Trailer or Dolly Designed
to Tow another Trailer”
Note: If you are testing a “non-towing” trailer, skip steps 2 and 3
Required Tests:
Air System Leak Test
Park Brake Set Test of Supply Line at Emergency brake chambers and at rear
supply line glad hand with 50” canister
Apply/Release Test of the control line at the service brake chambers and at the
rear service glad hand with a 50’ canister
Control Signal Differential Test on the Service Control Line (Differential Test) with
the testing manifold at the front service glad hand and the 50” canister with
sensor at rear service glad hand
1. Place sensors and HUB at the rear axles of the trailer to be tested.

Brake Timing Test CERTIFIER 912
# 87005 REV. 2.0.0 – OCT. 2013 Page 5 of 9
2. Connect a 50c.i. canister to the supply line (Emergency) at the rear of the trailer.
Note: Assure glad hand valve is in the open position.
3. Connect an air sensor into the 50c.i. canister that is on the rear Control line
Glad–Hand. Connect this air sensor into PORT 2 on the HUB.

CERTIFIER 912 Brake Timing Test
Page 6 of 9 # 87005 REV. 2.0.0 – OCT. 2013
4. Connect air sensors into the control line (service) brake chamber and supply line
(Emergency) brake cambers (as close to the cambers as possible) for the
apply/release test. Connect these air sensors to PORTS 3, 4, 5, 6, 7, or 8.
5. UPDATE or REBOOT the tester so it re-acquires the sensors connected to the
HUB. On the HUB tab pull down the selection box on each Hub port number
being used, and select CURB/ROAD for Service control line testing; or EMER for
park supply line testing. Dolly for rear canister control line testing, describing
what each air sensor is measuring.
6. On the “Main Test” tab, select “Auto Electrical, Auto Load, Auto Air Leak,
Auto 121, and Auto Print (if you have a printer connected)
7. Select AUTO TEST and to run the selected tests.

Brake Timing Test CERTIFIER 912
# 87005 REV. 2.0.0 – OCT. 2013 Page 7 of 9
8. Upon completion of AUTO TEST, check results to assure reading are within
allowable Parameters (Pass)
Note: Park supply line air sensors should show no more than 3 PSI under
EMER Set PSI heading.

CERTIFIER 912 Brake Timing Test
Page 8 of 9 # 87005 REV. 2.0.0 – OCT. 2013
Differential Testing (see also Differential Test Setup)
1. Connect the Differential Manifold (in the proper orientation) to the control line
(service glad-hand) at the front of the trailer and connect this sensor to PORT 1
on the HUB.

Brake Timing Test CERTIFIER 912
# 87005 REV. 2.0.0 – OCT. 2013 Page 9 of 9
2. Connect the 50c.i. canister to the control line (SERVICE) at the rear of trailer and
connect the sensor into PORT 2 on the HUB. Note: glad hand valve is Open.
3. Click on the “Diff Pressure Test” tab. Click Run Test.
4. Verify the Differential Test is completed successfully ( PASS )

CERTIFIER MODEL 912
CERTIFIER 912 Differential Testing

Differential Testing Certifier 921
Page 2 of 5 # 87001 - Rev 2.0.0 – Oct. 13, 2013
Revision History:
Name Date Changes Version #
Gene Ambacher October 5, 2013 Initial Draft 1.0.0
Gene Ambacher October 13, 2013 Final Draft 2.0.0

Certifier 921 Differential Testing
# 87001 - Rev 2.0.0 – Oct. 13, 2013 Page 3 of 5
Differential Test Set-up
1. The Differential manifold (consisting of two glad-hands, orifice, and quick
disconnect for sensor) connects to front of trailer SERVICE glad-hand.

Differential Testing Certifier 921
Page 4 of 5 # 87001 - Rev 2.0.0 – Oct. 13, 2013
2. 50 cu. inch test chamber (Red w/ quick disconnect for sensor) connects to rear
trailer SERVICE glad-hand

Certifier 921 Differential Testing
# 87001 - Rev 2.0.0 – Oct. 13, 2013 Page 5 of 5
Differential Self Test
1. Connect the Differential Manifold to the service line from the tester.
2. Connect the 50c.i. canister to the Differential Manifold.
3. Connect a sensor from port 1 on the HUB into the Differential Manifold.
4. Connect a sensor from port 2 on the HUB into the 50c.i. canister.
5. Block off the emergency line of the tester.

CERTIFIER MODEL 912
Calibration and Self-Test