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Electrical system
•
open circuit, thermal overload protection, shorted to negative, shorted to positive or short
circuit between both cables.
Error cause
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If the circuit is open: too low current has been detected at PIN 36 - 37 of the instrument panel
connector. If thermal overload protection: instrument panel fault. If shorted to negative: volt-
age equal to zero has been detected. If shorted to positive or short circuit between both
cables: excessive voltage has been detected.
Troubleshooting
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If the circuit is open: may occur due to loosen cables, therefore, make sure that cables are
tight: if not tight, fix them; if cables are OK, check valve connector and instrument panel
connector: if not OK, restore; if OK, check continuity of brown and black cables: if not OK,
restore cable harness; if OK, check motor electrical characteristics and replace it.
•
If thermal overload protection: replace the instrument panel.
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If shorted to negative: disconnect the valve connector and check, with key set to ON, if there
is continuity with ground at PIN 4 of the connector: if there is ground connection, disconnect
also the instrument panels connector and if it is still present, restore the brown cable; if there
is not ground connection, replace the instrument panel; if there is not ground connection,
check, with key set to ON, if there is continuity with ground connection at PIN 5 of the con-
nector: if there is ground connection, disconnect also the instrument panel connector and if
it is still present, restore the black cable; if there is not ground connection, replace the in-
strument panel; if there is not ground connection, check if PIN 4 or PIN 5 on the motor are
in continuity with ground connection: if it is in continuity, replace the motor.
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If shorted to positive or short circuit between both cables: disconnect the instrument panel
connector and check, with key set to ON if there is voltage on PIN 4 and PIN 5 of the con-
nector: if there is, restore cable harness; if there is not, check, with key set to OFF and
disconnecting also the valve connector, if both cables are insulated between them: if they
are not insulated, restore cable harness; if insulated between them, it is possible that there
is a shorted to positive inside the motor or instrument panel: it is necessary to replace one
of the two components to identify which of them is faulty.
Exhaust valve potentiometer P0193
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shorted to positive / shorted to negative, open circuit.
Error cause
•
If shorted to positive: excessive voltage has been detected at PIN 10 of the instrument panel.
If shorted to negative, the circuit is open: low voltage has been detected.
Troubleshooting
•
If shorted to positive: disconnect the valve connector and check, with key set to ON, if there
is voltage at PIN 2 of the connector: if there is voltage, disconnect also the instrument panel
ELE SYS - 230
RSV4 ABS
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