MID 128, PPID 19 Internal EGR
Status
FMI 3 – Voltage above normal or shorted high
Fault code explanation: Faulty sensor / Faulty sensor circuit
Fault indication: DCU: Engine warning in DCU display.
CIU: Flash code
Flash code
Electrical fault: 8.5
Value fault: None.
Symptom: IEGR can not be turned on. If the IEGR function would fail (not being acti-
vated)
the
result will be an increased exhaust production with high NOX and
possible over speeding of the turbocharger.
Conditions for fault code: The voltage on pin B30 on the EMS2 deviates from normal voltage value.
Possible reason: Short circuited IEGR signal cable to 5V voltage or to battery voltage.
Suitable action: 1 Check cable harness between EMS2 and the IEGR.
FMI 4 – Voltage below normal or shorted to lower voltage
Fault code explanation: Faulty sensor / Faulty sensor circuit
Fault indication: DCU: Engine warning in DCU display.
CIU: Flash code
Flash code
Electrical fault: 8.5
Value fault: None.
Symptom: IEGR can not be turned on. If the IEGR function would fail (not being acti-
vated)
the
result will be an increased exhaust production with high NOX and
possible over speeding of the turbocharger.
Conditions for fault code: The voltage on pin B30 on the EMS2 deviates from normal voltage value.
Possible reason: Short circuited IEGR signal cable to battery negative.
Suitable action: 1 Check cable harness between EMS2 and the IEGR.
30-2 Fault Tracing
108 47701632 10-2013 © AB VOLVO PENTA