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Instruction
Check and note the data on the display of
the diagnostic instrument (see Axone
instruction manual).
Make sure that the fan connector is inserted
well.
Disconnect the ECM and proceed to
location test 1.
Disconnect the ECM and proceed to test
4.
Possible cause
Cooling fan system damaged
Open or short circuit to the
chassis
Short circuit at the positive
battery pole (+)
Fault code
P1551
P1552
P1553
COOLING FAN - MC 1000 ECM
Instruction
Disconnect the fan and proceed to test 2
Repair the fault, proceed to test 5
Proceed to test 3
Locate and repair the cable fault, proceed
to test 5
Proceed to test 4
Locate and rectify the cable fault, proceed
to test 5
Proceed to test 5
Locate and repair the cable fault, proceed
to test 5
Activity carried out – terminate ithe test
Contact the Benelli l’assistance
Result
Ok
Fault
Ok
Short circuit
Ok
Open circuit
Ok
Short circuit
Ok
Fault
Test
1 - Check the integrity of the terminal
and the cable:
- ECM pins 2/G1 & 2/G2
2 - Check the cable for short circuiting:
- ECM pin 2/G1 to the frame
- ECM pin 2/G2 to the frame
3 - Check the continuity of the cable:
- Fan cable V/Bi with ECM pin 2/G2
- Fan cable Gi/B with ECM pin 2/G1
4 - Check the cable for short ciruiting:
- ECM pin 2/G1 & 2/G2 to ECM pin
1/H4
5 - Reconnect the cabling, cancel the
fault code and activate the engine
to check the elimination of the fault.
LOCATION TEST
Содержание Tornado Tre Novicento 903
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