71
Diagnostics
Blink
Code
SPN
FMI
Suspect
Component
and Location
ITP
Function
Fault
Description
(FMI)
Cause
Repair Information
12
144
1 GIO
Component
External
Supply
Pres-
sure
Sensor
External
Supply
Pressure
Sensor -
Signal Below
Normal
Supply pressure on
the trailer is below
4.5 bar.
- The supply pressure fell
below 4.5 bar whilst the
vehicle was being driven.
- Attention: Spring brake
actuators may apply or
automatic braking may be
triggered: Risk of overheating
the wheel brakes.
- The fault is stored if the
supply pressure has exceeded
5.0 bar before dropping below
4.5 bar again at least once
when driving.
12
144
3 GIO
Component
External
Supply
Pres-
sure
Sensor
External
Supply
Pressure
Sensor -
Signal
Overvoltage/
Short to
Supply
Voltage
The cable to the
external supply
pressure sensor is
defective.
- The measured values from
the supply pressure sensor in
the trailer modulator are above
the valid operating range.
- There is a possible short
circuit to supply voltage on the
signal line.
- Check the cable between
modulator and the connected
component.
- Test the cable for continuity
from end to end.
12
144
4 GIO
Component
External
Supply
Pres-
sure
Sensor
External
Supply
Pressure
Sensor -
Signal
Under-
voltage/
Short Circuit
to Ground
The cable to the
external supply
pressure sensor is
defective.
- The measured values from
the supply pressure sensor in
the trailer modulator are below
the valid operating range.
- There is a possible short
circuit to ground on the signal
line.
- Check the cable between
modulator and the connected
component.
- Test the cable for continuity
from end to end.
Содержание 400 500 320 0
Страница 148: ...148 Troubleshooting Fig 9 9 4017182a...
Страница 149: ...149 Troubleshooting Fig 9 10 4017180a...
Страница 150: ...150 Troubleshooting Fig 9 11 4017173a...
Страница 156: ...156 Troubleshooting Fig 9 15 4017183a...
Страница 157: ...157 Troubleshooting Fig 9 16 4017187a Fig 9 17 4012475b 3 2 SOLENOID VALVE CABLE P N 472 170 997 0 1 2...
Страница 174: ...174 Troubleshooting Fig 9 35 4017186a...
Страница 187: ...187 Notes Notes...