3 Diagnostics, Troubleshooting and Testing
21
Meritor WABCO Maintenance Manual MM-0112 (Revised 07-05)
Pro-Link
®
Plus Diagnostics
NOTE: You must use the Multiple Protocol Cartridge (MPC) and
Meritor WABCO applications card, version 2.0 or higher, with
E version ECUs. The PLC functions of E version ABS cannot be
tested with the Pro-Link
®
Plus.
The Pro-Link
®
Plus may be used in place of blink code diagnostic
procedures.
The Pro-Link
®
Plus screens illustrated appear with E version ECUs.
Refer to Maintenance Manual 28, Anti-Lock Braking Systems (ABS)
for Trucks, Tractors and Buses, if you are using the Pro-Link
®
Plus
with C version ECUs or Maintenance Manual 30, Anti-Lock Braking
Systems (ABS) for Trucks, Tractors and Buses, if you are using the
Pro-Link
®
Plus with D version ABS.
Diagnostic Procedure
1. Slide the MPC into the Pro-Link
®
Plus keypad until the
connection is tight. Then, insert the Meritor WABCO
applications card into the cartridge.
2. Block the wheels, apply the parking brake, and verify that the
ignition power is off.
3. Locate the 6-pin diagnostic receptacle in the vehicle cab.
Insert the 6-pin connector from the Pro-Link
®
Plus into the
receptacle.
4. Turn the ignition to the ON/RUN position. The Pro-Link
®
Plus
screen should power up.
If the Pro-Link
®
Plus does not power up, or if the screen
indicates NO DATA RECEIVED:
앫 Check connections.
앫 Verify that the cartridge is correctly connected to the
Pro-Link
®
Plus keypad.
앫 Verify 9.5-14.0 volts DC power and ground at the connector
and ABS ECU.
앫 Check the fuse panel for a blown fuse.
앫 Check for correct wiring in the diagnostic connector.
5. Refer to the Pro-Link™ Plus manual for complete diagnostic
instructions.
Pro-Link
®
Plus Screens
This information provides basic screen explanations for the
Pro-Link
®
Plus with an MPC and Meritor WABCO application card.
For complete operating instructions and test information, refer to the
Pro-Link
®
Plus manual.
Fault Information Screens
Existing Faults: Use these screens to identify existing faults. The
Pro-Link
®
Plus screen displays a written description of the fault,
including the location on the vehicle where each exists. As long as
there is an active (existing) fault in the system, the Pro-Link
®
Plus
will not let you clear faults.
Stored Faults: Use these screens to identify faults stored in the
ECU memory. Stored faults may be existing faults that have been
repaired, or faults that existed for a short time, then corrected
themselves. After displaying the stored faults, the Pro-Link™ Plus
lets you erase them from memory. All stored faults are cleared at
one time.
Pro-Link
®
Plus Display
Depending upon the ECU being tested, the Pro-Link
®
Plus screen
will display certain options or components only when recognized by
the ECU. These include:
앫 ATC, ATC Indicator Lamps, Trailer ABS Indicator Lamp, ATC Valve
앫 Engine Datalink
앫 Retarder Relay
앫 Retarder Datalink
Component Test Screens (Pro-Link
®
Plus)
These screens help you test ABS components. Select this function
from the Tractor ABS/ATC menu.
ABS VALVES
ATC
ABS INDICATOR LAMP
ABS TRAILER INDICATOR LAMP
ATC INDICATOR LAMP
ABS/ATC SWITCHES
SENSORS
ENGINE DATALINK
RETARDER RELAY
RETARDER DATALINK
VEHICLE VOLTAGES
Select the appropriate function. Each screen has instructions to
guide you through the test. Refer to the Pro-Link
®
Plus Manual for
complete instructions.
The Pro-Link
®
Plus is available from SPX, 800-328-6657.
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