SDMO R570U - Page 170

Crankcase Ventilation Pressure Sensor (Code 7.8, PID/SPN 153)
Cause Reaction Remedy
• Shorted to plus (+) or minus
(-)
• Break
• None • Check that the crankcase
ventilation pressure sensor
contact is correctly installed
•
Check that the cable harness
to the crankcase ventilation
pressure sensor has not been
damaged
• Check that the crankcase
ventilation pressure sensor
correctly installed
• Check crankcase ventilation
pressure sensor function
Battery Voltage, EMS (Code 3.9, PID/SPN 158)
Cause Reaction Remedy
• Faulty alternator
• Faulty battery, battery cables
• None • Check the supply voltage
from the control unit
Battery Voltage, CIU (Code 6.9, PID/SPN 158)
Cause Reaction Remedy
• Short circuit to negative (-)
• Faulty alternator
• Faulty battery, battery cables
• Problems in engine starting
• Check the supply voltage
from the control unit
• Check the batteries
• Check the alternator
• Check the 8-pin contact
Air Temperature Sensor, Inlet (Code 7.9, PID/SPN 172)
Cause Reaction Remedy
• Shorted to plus (+) or minus
(-)
•
Break
• None • Check that the air tempera-
ture sensor contact is cor-
rectly installed
•
Check that the cable harness
to the air temperature sensor
has not been damaged
• Check that the air tempera-
ture sensor is correctly instal-
led
• Check the air temperature
sensor functionality
Fault Code Register
40 7748681 12-2011
168/297