Group 30: Electrical system
Diagnostic Trouble Codes
99
FMI 9
Fault condition:
EMS2 gets no throttle signal on the J1939 bus from
the CIU.
Suitable action:
1.
Check that the throttle potentiometer is connected
correctly.
2.
Check cable harness and connectors between
CIU and CIU throttle potentiometer.
3.
Check function of throttle potentiometer.
4.
Check contact pressure in socket 2, 3 and 30 in
CIU connector.
Logging throttle signal with
Vodia
To verify the throttle signal on the J1587 bus do as
follow:
1.
Choose “Log test” under the “Service and mainte-
nance” meny.
2.
Choose “MID 128, Accelerator Pedal Position”
and “MID 144, Throttle Calibrated Position” and
press play.
3.
Verify that booth throttle values displayed in per-
centage by Vodia changes simultaneous while
moving the throttle.
