5000S Quattro Sedan L5-2309cc 2.3L SOHC (NF) (1988)
Cold Start Injector: Testing and Inspection
Electrical Test
(Fault code 4443)
Requirement:
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Ignition switched to OFF position
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insert spare fuse in top of fuel pump relay
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turn ignition ON, remove fuse after four seconds
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re-insert fuse for four seconds, then remove
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re-insert fuse for four seconds, then remove
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re-insert fuse for four seconds, then remove
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fault indicator light displays 4443 code
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close full throttle switch
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cold start valve clicks ON and OFF (for a maximum of ten seconds) when full throttle switch is closed
If NO
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proceed as follows
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disconnect cold start valve connector (arrow)
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connect US 1115 LED tester between terminals 1 and 2 of cold start valve harness connector
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US 1115 should light up
If specification IS obtained
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replace cold start valve
If specification is NOT obtained
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connect multimeter US 1119 between connector terminal 1 and ground
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specification: approximately 12 volts
If specification is NOT obtained
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repair break in wiring, using wiring diagram
If specification IS obtained
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remove fuel injection control unit cover in right passenger foot well and disconnect control unit connector