Volvo TSI, Manual, Page: 212 / 250

Group 28 Troubleshooting
MID 144 PPID 70 Pedal Switches, Supply
Voltage supply to pedal switches.
•
Text Messages
In vehicles equipped with diagnostic display, the fol-
lowing message(s) will appear:
•
Instrument Cluster Graphics Display (VN):
Output supply #3
•
Data Link Instrument Cluster (WG, AC, WX):
The Data Link instrument cluster graphics display
used on WG-, AC-, and WX-series vehicles can
display a limited number of text messages. For infor-
mation, see “Data Link Instrumentation,” Volvo
Service Publication PV776–381–620SM.
•
VCADS Pro Display:
Pedal switches supply
Fault Codes
FMI 4
Abnormally low voltage.
Conditions for fault code:
•
If the VECU registers a voltage lower than 2.5 V on
the supply wire, the VECU interprets this as a fault
and an fault code is set.
Possible cause:
•
The supply wire short-circuited to ground.
•
The signal wire for brakes/clutch short-circuited to
ground.
•
Signal wire for idle validation switch 1 short-circuited
to ground.
•
Faulty switch.
Reaction from the VECU:
•
Fault code is set.
•
Yellow lamp is requested.
Noticeable external symptom:
•
Yellow lamp lights up.
•
The cruise control function does not work.
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