S4 Sedan L5-2226cc 2.22L DOHC Turbo (AAN) (1992)
Central Electric Panel With Detail Of Relay Position 6
If LED tester still does NOT light up:
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Check continuity (according to wiring diagram) between circuit breaker and terminal 31 (central electric panel relay position 6).
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Repair open circuit, as necessary.
Fuse Holder
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Connect LED tester between GND and terminal 1- of yellow holder for Heated Oxygen Sensor (HO2S) circuit breaker -S73-.
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Located in auxiliary relay holder 2, on A-pillar, right
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Operate starter briefly.
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Fuel pump relay must be activated
^
LED tester must light up
If LED tester does NOT light up:
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Connect LED tester to terminal 2, and repeat test.
Central Electric Panel With Detail Of Relay Position 6
If LED tester still does NOT light up:
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Check continuity between circuit breaker holder and terminal 30 of central electric panel relay position 6, using wiring diagram.
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Repair or replace wiring, as necessary.
Checking fuel pump relay control signal
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Remove fuel pump relay from central electric panel (relay position 6).
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Switch ignition ON.