WABCO iABS 2S/1M Standard, Maintenance Manual

Page: 68 / 188

68
Diagnostics
Blink
Code
SPN FMI
Suspect
Component
and Location
ITP
Function
Fault
Description
(FMI)
Cause Repair Information
9 9 3 Internal
Modulator
Valve
N/A H1 Trailer
Modulator/
Solenoid
Valve Control
-
Overvoltage/
Short to
Supply
Voltage
ECU has detected
an over voltage/
short to supply
voltage condition
on the internal H1
modulator.
- Verify the ABS ECU power
connector is seated properly
and has no signs of moisture
or corrosion.
- Verify proper power, ground
at the main ABS ECU power
connector and load test the
power and ground circuit.
9 9 4 Internal
Modulator
Valve
N/A H1 Trailer
Modulator/
Solenoid
Valve Control
- Under-
voltage/
Short Circuit
to Ground
ECU has detected
an undervoltage/
short to ground
condition on
the internal H1
modulator.
- Verify the ABS ECU power
connector is seated properly
and has no signs of moisture
or corrosion.
- Verify proper power, ground
at the main ABS ECU power
connector and load test the
power and ground circuit.
9 9 5 Internal
Modulator
Valve
N/A H1 Trailer
Modulator/
Solenoid
Valve Control
-
Supply Cable
Interruption
ECU has detected
an open circuit on
the internal H1
modulator.
- Verify the ABS ECU power
connector is seated properly
and has no signs of moisture
or corrosion.
- Verify proper power, ground
at the main ABS ECU power
connector and load test the
power and ground circuit.
9 9 6 Internal
Modulator
Valve
N/A H1 Trailer
Modulator/
Solenoid
Valve Control
-
Current
Too High
or Circuit
Grounded
ECU has detected
a high current\short
to ground condition
on the internal H1
modulator.
- Verify the ABS ECU power
connector is seated properly
and has no signs of moisture
or corrosion.
- Verify proper power, ground
at the main ABS ECU power
connector and load test the
power and ground circuit.
9 9 11 Internal
Modulator
Valve
N/A H2 Trailer
Modulator/
Solenoid
Valve Control
-
FSC Actuator
Control
Timeout
Internal modulator
error.
- Switch off ignition for at
least 5s. If failure is no longer
present, there may be a
contact problem with the
supply voltage.
- Verify proper power, ground
at the main ABS ECU power
connector and load test the
power and ground circuit.