Volvo VN 2003 - MID 140 PID 171 Ambient Temperature; 3811-21-02-04 MID 140 PID 171 Ambient Temperature, Check

Group 38 Fault Codes, Instrument Cluster Troubleshooting
MID 140 PID 171 Ambient Temperature
T3006581
T3015670
A03 Instrument cluster
B22 Sensor, ambient temperature
Fault code
FMI 3
Abnormally high voltage or short-circuit to higher voltage.
Conditions for fault code:
•
If the instrument cluster registers a resistance
greater than 19.5 K
 the instrument cluster inter-
prets this as a fault and a fault code is stored.
Possible cause:
•
Open-circuit in the ground lead.
•
Open-circuit in the signal cable.
•
Faulty sensor.
•
Contact resistance and oxidation.
•
Extreme cold (Colder than -40

C [-40

F]).
Reaction from the instrument cluster:
•
Yellow lamp requested.
Noticeable external symptoms:
•
Yellow lamp lights up.
•
The display shows an icon and the text ”NO DATA”.
Appropriate check:
•
“MID 140 PID 171 Ambient Temperature, Check”
page 38.
FMI 4
Abnormally low voltage or short-circuit to lower voltage.
Conditions for fault code:
•
If the instrument cluster registers a resistance of
less than 47
 the instrument cluster interprets this
as a fault and a fault code is stored.
Possible cause:
•
Signal cable short-circuited to ground.
•
Faulty sensor.
•
Extreme heat (Hotter than 90

C [194

F]).
Reaction from the instrument cluster:
•
Yellow lamp requested.
Noticeable external symptoms:
•
Yellow lamp lights up.
•
The display shows an icon and the text ”NO DATA”.
Appropriate check:
•
“MID 140 PID 171 Ambient Temperature, Check”
page 38.
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