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Trouble Godes - diagramas.diagram...

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I'kk4f1 AUDl<br />

r Engine management<br />

type<br />

5-digit<br />

17954<br />

EOBD type<br />

PI 546<br />

Model: A2 A31S3 80 1,612,012,612,8 80 1,9 TDI (07193 -+) A4lS4<br />

1001A6 1,8/2,012,612,814,2 A6 2,5 TDI A6IS6IAllroad A81S8<br />

CoupelCabriolet 1,812,012,6/2,8 Cabriolet 1,9 TDI lT<br />

17955 1 Turbocharger (TC) wastegate regulating Wiring short to earth, TC wastegate regulating<br />

valve - short to earth valve<br />

17956 1 PI548<br />

17957<br />

PI 549<br />

PI 553<br />

PI 554<br />

PI 556<br />

PI 557<br />

Fault location<br />

Turbocharger (TC) wastegate regulating<br />

valve - short to positive<br />

Turbocharger (TC) wastegate regulating<br />

valve - open circuit<br />

Turbocharger (TC) wastegate regulating<br />

vatve - open circuitlshort to earth<br />

Turbocharger (TC) pressure - control<br />

difference<br />

Manifold absolute pressure (MAP) sensor1<br />

barometric pressure (BARO) sensor -<br />

rangelperformance problem<br />

Throttle control unit - basic setting<br />

conditions<br />

Turbocharger (TC) pressure - upper limit<br />

exceeded<br />

Turbocharger (TC) pressure - control limit<br />

not reached<br />

Turbocharger (TC) pressure - control limit<br />

exceeded<br />

Probable cause<br />

Wiring short to positive, TC wastegate regulating<br />

valve<br />

Wiring open circuit, TC wastegate regulating<br />

valve<br />

Wiring open circuitlshort to earth, TC wastegate<br />

regulating valve<br />

lntakelexhaust leak, hoses interchangedlnot<br />

connected, MAP sensor, TC wastegate regulating<br />

valve, turbocharger (TC) wastegate actuator, TC<br />

lntakelexhaust leak, EGR system, EVAP canister<br />

purge valve, throttle control unit, wiring,<br />

MAP sensor, BAR0 sensor<br />

Basic setting conditions not met<br />

Hoses interchangedlnot connected,<br />

TC wastegate regulating valve, turbocharger (TC)<br />

wastegate actuator, TC<br />

TC wastegate regulating valve, intake leak,<br />

TC defective<br />

Hose connection interchangedlnot connected<br />

I7966 i Idle speed control (ISC) actuatorlthrottle<br />

motor - circuit malfunction<br />

Wiring, ISC actuatorlthrottle motor<br />

Throttle control unit - basic setting Accelerator pedal or starter motor operated<br />

malfunction during basic setting<br />

I7968 I I Maximum engine RPM exceeded Incorrect gear shift, wiring open circuit,<br />

CKPIRPM sensor<br />

17969 / PI561 I Fuel quantity adjuster - control difference I Wiring, fuel injection pump<br />

17970<br />

17971<br />

17972<br />

17973<br />

17974<br />

17976<br />

17977<br />

17978<br />

17979<br />

I<br />

PI 562<br />

PI 563<br />

PI564<br />

PI565<br />

PI 566<br />

PI568<br />

PI 569<br />

PI 570<br />

I<br />

Fuel quantity adjuster - upper stop value<br />

Fuel quantity adjuster - lower stop value<br />

Throttle control unit - voltage low during<br />

basic setting<br />

Throttle control unit - lower stop not<br />

reached<br />

AC compressor, load signal - implausible<br />

signal<br />

Throttle control unit - mechanical fault<br />

Cruise control master switch<br />

Engine control module (ECM) - immobilizer<br />

active<br />

Engine mounting control solenoid,<br />

bank 2 - short to positive<br />

-- -<br />

PI 572 Engme mounting control solenoid,<br />

bank 2 - short to earth<br />

Fuel quantity adjuster blockedldefective,<br />

stop value reached<br />

Fuel quantity adjuster blockedldefective,<br />

lower stop value reached<br />

Battery, wiring<br />

Throttle valve tightlsticking, ISC actuator<br />

Wiring, AC system<br />

Throttle valve tightlsticking<br />

Wiring, cruise control master switch<br />

lncorrectldamaged key, incorrectly coded,<br />

ECMlimmobilizer replacement without coding,<br />

wiring, immobilizer defective<br />

Wiring short to positive, engine mounting control<br />

solenoid<br />

- --<br />

Wiring short to earth, engine mounting control<br />

solenoid

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