Normal Performance
Performance Monitoring Troubleshooting
25-4
80-JB566-1 Rev. G
MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION
9
LTD
Mismatch
(MCP50)
LTD mismatch with
stored MCP50 data.
- Engine run with main power disconnected.
- Engine run with data link disconnected.
- Engine run with ignition line disconnected.
A
Bad Speed
(MCP50)
More than 2 hrs IGN =
ON with Spd = 0, RPM
greater than 1300.
- Speed sensor or connection problem:MCP50.
- Speed sensor or connection problem: engine.
- Engine speed sensor parameter not enabled.
B
0 Spd and
RPM
(MCP50)
More than 2 hrs with
IGN = ON with Spd = 0,
RPM = 0.
- Disconnect of entire accessory cable.
- J1708 selection parameter set wrong.
- Data link connection problem.
- Driver using ignition position for accessory
operation.
- MCP50 ignition line wired to accessory
position.
D
MCP50
Speed
(MCP)
Speed signal constant
for more than 5
minutes.
A pulse generator may have been connected
to either the MCP50 or the engine.
E
Hard
Braking
Event
Speed is suddenly
decreased by more
than 9 MPH/second
(speed must be above
20 MPH for this fault to
occur.
Driver is braking too quickly (hard braked).
Active Fault Field Value Definitions (Continued)
Display
Shows
Associated
Fault
Description/Symptom
Possible Cause
