5000CD Quattro Wagon (Canada) L5-2226cc 2.22L SOHC Turbo (MC) (1986)
Canister Purge Control Valve: Testing and Inspection
Charcoal canister shut-off valve, checking
Work sequence
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Unplug electrical connector (arrow) from charcoal canister shut-off valve, located in right front wheel house
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Using LED test light US 1115, connect red test lead to terminal 1 and black lead to terminal 2 of open connector
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Initiate output diagnosis sequence until code 4343 for charcoal canister shut-off valve is displayed
^
LED of US 1115 must be ON
If light is ON
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Replace charcoal canister shut-off valve
If LED is NOT ON
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Connect voltmeter between terminal 1 of open shut-off connector and ground
specification: approx. 12V
If voltage reading NOT OK
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Check for open circuit in wiring according to current flow diagram
If voltage reading OK
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Remove cover for control unit located in front passenger side footwell
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Unplug, control unit connector