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: 3.3
Value fault: 6.1
Conditions for fault code: The voltage on pin B18 on the EMS 2 is less than 0.07 Volt.
Possible reason: • Short circuit between both cables to the coolant temperature sensor.
• Faulty sensor.
Suitable action: 1
Check the cable harness between coolant temperature sensor and
EMS2.
2 Check the sensor.
FMI 5 – Current below normal or open circuit
Fault code explanation: Faulty sensor / Faulty sensor circuit
Fault indication: DCU: Engine warning in DCU display.
CIU: Flash code
Flash code
Electrical fault: 3.3
Value fault: 6.1
Conditions for fault code: The voltage on pin B27 on the EMS 2 is more than 4.95 Volt.
Possible reason: • Open circuit in signal cable to temperature sensor.
•
Open circuit in negative cable to temperature sensor.
•
Faulty sensor.
Suitable action: 1 Check the cable harness between coolant temperature sensor and
EMS2.
2 Check the contact pressure in socket 18 and 27 in the engine connector
B.
3 Check the sensor.
p0004941
TAD950–952VE, TWD1643GE,
TWD1663GE, TWG1663GE
TAD1250–1252VE
30-2 Fault Tracing
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