13 · Steering & suspension

MPU CHECK (Motor Pump Unit)

Make: Fiat
Model: Croma Factory Service Manual
Year: 2005–2010
Section: Steering control and linkage › MPU CHECK (Motor Pump Unit)

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SteeringMPU CHECK (Motor Pump Unit)

MPU CHECK (Motor Pump Unit)

Check 4110DC

STEP	CHECK TO BE PERFORMED	RESOLUTION IF THE CHECK IS NOT OK
1	Check power supply (+15) Connect using the Examiner in Voltmeter mode with the positive probe at pin 1 and the negative probe of the 5-way connector for the connector plate for the MPU earthed: Turn the key to the on position and read the battery voltage of around 12 volt	Check the continuity of the 10 A fuse F51 in the dashboard junction unit and if broken replace it checking out the cause. Check the continuity of the wiring between the fuse and the MPU
2	Check earth connection Check the continuity of the connection between pin 2 of the two-way supply connector for the MPU connector plate and the earth	Restore the continuity of the earth connection
3	Check power supply (+30) Connect using the Examiner in Voltmeter mode with the positive probe at pin 1 and the negative probe of the two-way connector for the connector plate for the MPU earthed.	Check the continuity of the 80 A fuse F73 in the battery junction unit and if broken replace it checking out the cause.

STEP

CHECK TO BE PERFORMED

RESOLUTION IF THE CHECK IS NOT OK

Check power supply (+15)

Connect using the Examiner in Voltmeter mode with the positive probe at pin 1 and the negative probe of the 5-way connector for the connector plate for the MPU earthed:
Turn the key to the on position and read the battery voltage of around 12 volt

Check the continuity of the 10 A fuse F51 in the dashboard junction unit and if broken replace it checking out the cause.

Check the continuity of the wiring between the fuse and the MPU

Check earth connection

Check the continuity of the connection between pin 2 of the two-way supply connector for the MPU connector plate and the earth

Restore the continuity of the earth connection

Check power supply (+30)

Connect using the Examiner in Voltmeter mode with the positive probe at pin 1 and the negative probe of the two-way connector for the connector plate for the MPU earthed.

Check the continuity of the 80 A fuse F73 in the battery junction unit and if broken replace it checking out the cause.

‹ Prev STEERING ANGLE SENSOR CHECK (SRS) on steering box Next › Steering wheel - r+r for replacement or checks

Parts & tools for this job For 2005 Fiat Croma

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