•
No communication on CAN line (PIN 66 and/or PIN 80): problem on the whole network (for
example, battery cut-off or short circuited or shorted to ground).
Troubleshooting
•
check the Marelli control unit VEHICLE connector and the engine-vehicle cable harness
connector: if not OK, restore; if OK, check the ground insulation of the two CAN lines from
PIN 66 and PIN 80 of the VEHICLE connector: if not OK, restore cable harness; if OK, check
the continuity of the two CAN lines from Marelli control unit VEHICLE connector to the in-
strument panel connector: if not OK, restore the cable harness; if OK, check that the two
lines are not shorted to positive testing each of the 3 connectors (Marelli control unit, engine-
vehicle cable harness connector and instrument panel connector) with 1 connector discon-
nected at a time and by setting the key to ON: If not OK, restore; if OK, replace the Marelli
control unit.
CAN line towards instrument panel U1701
•
no signal.
Error cause
•
No signal is received from the instrument panel.
Troubleshooting
•
Check the connector of the instrument panel: if not OK, restore; if OK, check the continuity
of the two lines from the instrument panel connector to the VEHICLE connector of the Marelli
control unit: if not OK, restore the cable harness; if OK, replace the instrument panel.
RSV4 R Electrical system
ELE SYS - 223
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