Product Manual

9.1 MERITOR/WABCO BLINK CODES
To access Meritor/WABCO blink codes, you must select the Auxiliary Circuit to pow-
er ON/OFF/ON in one second intervals using the following directions:
1. Make sure trailer is stationary and wheels are properly chocked.
2. On the MUTT®, turn the control knob to the Auxiliary Circuit. Pause one second.
4. Turn the control knob to the Ground Integrity Indicator (one position to the right).
Pause one second.
5. Turn the control knob back to the Auxiliary Circuit (one position to the left).
6. Count number of blinks on the trailer ABS lamp. Use the chart below for specic
fault information.
For diagnostic and troubleshooting assistance, call Meritor WABCO at 1-800-535-5560
Blink
Code
Problem Area Action
3 Sensor BUI
Determine sensor location. Check sensor installation.
Make necessary repairs.
4 Sensor YEI
Determine sensor location. Check senor installation.
Make necessary repairs.
5 Sensor BU2
Determine sensor location. Check sensor installation.
Make necessary repairs.
6 Sensor YE2
Verify proper electrical modulator installation.
Check power supply. Make necessary corrections.
7 External ABS Modulator Valve
Verify proper electrical modulator installation.
Check power supply. Make necessary corrections.
9
Internal modulator
failure inlet valve #2
Verify proper installation. If code continues, contact
Meritor WABCO for assistance.
10
Internal modulator
failure inlet valve #1
Verify proper installation. If code continues, contact
Meritor WABCO for assistance.
11
Internal modulator
failure inlet valve
Verify proper installation. If code continues, contact
Meritor WABCO for assistance.
14 Power Supply
Verify proper electrical installation. Check power supply. Make
necessary corrections.
15 ECU Failure
Verify proper installation. If code continues, contact Meritor
WABCO for assistance.
16 SAE JI 708 Failure Internal failure, contact Meritor WABCO
17
SAE J2497
(PLC) Failure
Internal failure, contact Meritor WABCO
18 Generic I/O Failure
Verify proper electrical installation. Check power supply. Make
necessary corrections.
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