5000S Quattro Sedan L5-2309cc 2.3L SOHC (NF) (1988)
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resistance should change from 0 ohms (with throttle closed) to ohms as throttle gap increases beyond 0.5 mm (0.020 in)
If specifications are NOT obtained
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adjust idle switch
If specifications ARE obtained
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check full throttle switch
Full Throttle Switch, Checking
(Fault code 2123)
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connect multimeter US 1119 between terminals 2 and 3 of throttle switch connector
^
specification: ohm
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operate switch using throttle valve lever
^
specification: approximately 0 ohms
If specification is NOT obtained
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replace and adjust full throttle switch
If specification IS obtained, check wiring between throttle switch connector and fuel injection control unit connectors as follows:
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remove control unit access covers in foot wells, driver side left and passenger side right, and pull hamess connectors off of knock sensor ignition
and fuel injection control units, respectively
25 Pin Harness Connector, Knock Sensor Ignition Control Unit
35 Pin Harness Connector, Fuel Injection Control Unit