MID 128, SID 21 Engine position
FMI 2 – Data erratic, intermittent or incorrect
Fault code explanation: Faulty sensor / Faulty sensor circuit
Fault indication: DCU: Engine warning in DCU display.
CIU: Flash code
Flash code
Electrical fault: 2.5
Value fault: None.
Symptom: The engine start time will increase, uses only crankshaft sensor.
Conditions for fault code: Incorrect timing.
Possible reason: • Polarity fault. The cables to the cam speed sensor is shifted.
•
Intermittent fault.
•
Incorrectly mounted cam speed sensor.
Suitable action: 1 Check the cable harness between the cam speed sensor and EMS2.
2 Check that the cam speed sensor is connected as in the circuit descrip-
tion.
3 Check the cam speed sensor.
FMI 3 – Voltage above normal or shorted high
(No signal)
Fault code explanation: Faulty sensor / Faulty sensor circuit
Fault indication: DCU: Engine warning in DCU display.
CIU: Flash code
Flash code
Electrical fault: 2.5
Value fault: None.
Symptom: The engine start time will increase, uses only crankshaft sensor.
Conditions for fault code: No camsignal when expected.
Possible reason: • Incorrectly mounted cam speed sensor.
•
Open circuit in any or both of the cables to the crank speed sensor.
•
Short circuit between the cables to the cam speed sensor.
• Faulty cam speed sensor.
Suitable action: 1 Check the installation of the cam speed sensor.
2 Check the cable harness between the cam speed sensor and EMS2.
3 Check the cam speed sensor.
4 Check the contact pressure in socket 45 and 46 in engine connector A.
30-2 Fault Tracing
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