Volvo TSI, Manual

Page: 227 / 250

Group 28 Troubleshooting
MID 144 PPID 75 Range Inhibitor, Solenoid Valve Status
This applies only to vehicles with Volvo transmissions.
•
Text Messages
In vehicles equipped with diagnostic display, the fol-
lowing message(s) will appear:
•
Instrument Cluster Graphics Display (VN):
Range inhibitor
•
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:
Range inhibitor solenoid valve
Fault Codes
FMI 3
Abnormally high voltage.
Conditions for fault code:
•
If the VECU registers a voltage higher than 6.5 V
when the function is active, the VECU interprets this
as a fault and an fault code is set.
Note: The fault code is set first at the speed when
the inhibitor is to engage — at approx 40 km/h (25
mph).
Possible cause:
•
The wire between the solenoid valve and the VECU
short-circuited to battery voltage (B+).
•
Faulty solenoid valve.
Reaction from the VECU:
•
Fault code is set.
•
Yellow lamp is requested.
Noticeable external symptom:
•
Yellow lamp lights up.
•
The range inhibitor is not activated.
FMI 4
Abnormally low voltage.
Conditions for fault code:
•
If the VECU registers a voltage lower than 2.3 V
when the function is inactive, the VECU interprets
this as a fault and an fault code is set.
Note: The fault code is set first at the speed when
the inhibitor is to be released — approximately 36
km/h (23 mph).
Possible cause:
•
The wire between the solenoid valve and the VECU
short-circuited to ground.
•
Open circuit, wire between solenoid valve and
VECU.
•
Open circuit, supply wire to solenoid valve.
•
Faulty solenoid valve.
•
Switch resistance and oxidation.
Reaction from the VECU:
•
Fault code is set.
•
Yellow lamp is requested.
Noticeable external symptom:
•
Yellow lamp lights up.
•
The range inhibitor is not activated or is constantly
active.
225