•
Potentiometer 1 and potentiometer 2 do not show a logical value: the sum of the two voltages
should be constant. The cause may be a malfunction in one of the two sensors or an ab-
normal resistance in one of the two circuits
Troubleshooting
•
Check the throttle body connector as well as the control unit connector. Check that resist-
ance of cable between throttle body connector (PIN 1) and control unit (PIN 36) is a few
tenths of an Ohm. Check that resistance of the cable between throttle body connector (PIN
4) and the throttle control unit (PIN 21) is a few tenths of an Ohm. If one is different, restore
cable harness, if OK, replace the entire throttle body
Rear throttle Limp Home self-acquisition P0160
•
failed test
Error cause
•
Throttle position, kept by the springs, not within the expected field (at each key ON). The
instrument panel does not indicate the presence of this error even in the ATT status
Troubleshooting
•
Check if the throttle body and the intake duct are clean. If OK, replace the throttle body
Rear throttle mechanical springs self-acquisition P0161
•
failed test
Error cause
•
Return time of the throttle, kept in position by the springs, not within the expected limits: the
causes can be a deterioration of the performance of the springs or excessive throttle friction
(at each key ON)
Troubleshooting
•
Check if the throttle body and the intake duct are clean. If OK, replace the throttle body
Rear throttle minimum mechanical position self-acquisition P0162
•
failed test
Error cause
•
Position of the throttle stop not within the expected field (at each key ON)
Troubleshooting
•
Check if the throttle body and the intake duct are clean. If OK, replace the throttle body
Detection of the rear throttle Recovery conditions (air temp., water temp.) P0163
•
possible presence of ice
Error cause
Electrical system RSV4 R
ELE SYS - 196
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