PREVOST X3-45 Multiplex User Manual

3 Diagnostics, Troubleshooting and Testing
16
Meritor WABCO Maintenance Manual MM-0112 (Revised 07-05)
Diagnostic Mode
To enter the diagnostic mode, press and hold the blink code switch
for one second, then release.
Clear Mode
To erase faults from the ECU, you must be in the clear mode. To
enter the clear mode, press and hold the blink code switch for at
least three seconds, then release.
If the system displays eight quick flashes followed by a system
configuration code, the clear was successful. Stored ABS faults
have been cleared from memory.
If you do not receive eight flashes, there are still active faults that
must be repaired before they can be cleared.
NOTE: The clear mode is also used to disable the ATC function.
Table C: Troubleshooting with Blink Code Diagnostics
Procedure System Response Action
Diagnostics Mode
Step I.
Turn ignition ON.
Possible responses:
ABS indicator lamp comes on momentarily then
goes out, indicating System OK.
ABS indicator lamp does not light, indicating
possible wiring fault or burned-out bulb.
ABS indicator lamp stays on, indicating:
앫 Fault, or faults, in the system.
앫 Sensor fault during last operation.
앫 Faults cleared from ECU, but vehicle not driven.
앫 ECU disconnected.
No recognizable active faults in the ABS. No action
required.
Inspect wiring. Inspect bulb. Make necessary repairs.
Continue with blink code diagnostics. (Go to Step II.)
Continue with blink code diagnostics. (Go to Step II.)
Drive vehicle — lamp will go out when vehicle
reaches 4 mph (6 km/h).
Connect ECU.
Step II.
Press and hold Blink Code
Switch for one second, then
release.
ABS indicator lamp begins flashing two digit blink
code(s).
Determine if fault is active or stored:
Active Fault: Lamp will repeatedly display one code.
Stored Fault: Lamp will display code for each stored
fault then stop blinking. Faults will be displayed one
time only.
Step III.
Count the flashes to
determine the blink code.
First Digit: 1-8 flashes, Pause (1-1/2 seconds)
Second Digit: 1-6 flashes, Pause (4 seconds)
Find definition for blink code on blink code chart.
Step IV.
Turn ignition OFF.
Repair and record faults.
Active Fault
Stored Fault
Make the necessary repairs. Repeat Step 1, Step II
and Step III until System OK, code (1-1) received.
Record for future reference.
NOTE: Last fault stored is first fault displayed.
Clear Mode
Step V.
Turn ignition ON.
Clear Faults from memory:
Press and hold blink code
switch for at least three
seconds, then release.
ABS indicator lamp flashes eight times.
Eight flashes not received.
All stored faults successfully cleared. Turn ignition OFF.
Active faults still exist, repeat Step I through Step V.

PREVOST X3-45 Multiplex Specifications

General

Length	45 ft
Width	102 in
Engine	Volvo D13
Horsepower	500 hp
GVWR	54, 000 lbs
Height	146 in
Sleeping Capacity	Varies based on floor plan
Water Capacity	Varies based on floor plan