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Trouble Godes - diagramas.diagram...

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LEngine management<br />

Model: 850 2,O 850 2,3/2,5 850 2,5 20V 960 2,5 20V<br />

SN70 2,012,5 20V<br />

Flash type Fault location Probable cause<br />

Turbocharger (TC) pressure - control<br />

Transmission control module (TCM) - TC boost reduction<br />

signal<br />

TC wastegate regulating valve hose leaklblockage,<br />

wiring, MAF sensor, TCM wire (TC boost reduction),<br />

TC wastegate regulating valve<br />

Wiring short to earth<br />

Engine control module (ECM) - overheating Engine coolant blower motor, air supply blocked,<br />

module cooling fan<br />

Knock sensor (KS) 2 Wiring, KS<br />

Heated oxygen sensor (H02S) 1 - slow response<br />

Heated oxygen sensor (H02S) 2 - compensation<br />

Secondary air injection (AIR) pump relay<br />

Catalytic converter - efficiency<br />

lntakelexhaust leak, fuel pressure, compression, H02S<br />

lntakelexhaust leak, fuel pressure, compression,<br />

H02S 112<br />

Wiring, AIR pump relay<br />

Accelerator pedal position (APP) sensor Wiring, APP sensor<br />

lntakelexhaust leak, fuel pressure, compression,<br />

catalytic converter<br />

Cytinder 1 - misfire detected Spark plug, HT lead, distributor rotorlcap, moisture<br />

ingress, injectorlwiring, air leak, compression, head<br />

gasket, low-tension wiring, repeated cold starts<br />

(flooding), puncture in front tyre<br />

Cylinder 2 - misfire detected Spark plug, HT lead, distributor rotorlcap, moisture<br />

ingress, injectorlwiring, air leak, compression, head<br />

gasket, low-tension wiring, repeated cold starts<br />

(flooding), puncture in front tyre<br />

Cylinder 3 - misfire detected Spark plug, HT lead, distributor rotorlcap, moisture<br />

ingress, injectorlwiring, air leak, compression, head<br />

gasket, low-tension wiring, repeated cold starts<br />

(flooding), puncture in front tyre<br />

Cylinder 4 - misfire detected Spark plug, HT lead, distributor rotorlcap, moisture<br />

ingress, injectorlwiring, air leak, compression, head<br />

gasket, low-tension wiring, repeated cold starts<br />

(flooding), puncture in front tyre<br />

Cylinder 5 - misfire detected Spark plug, HT lead, distributor rotorlcap, moisture<br />

ingress, injectorlwiring, air leak, compression, head<br />

gasket, low-tension wiring, repeated cold starts<br />

(flooding), puncture in front tyre<br />

Long term fuel trim, idling<br />

lntakelexhaust leak, fuel pressure, excessive fuel in<br />

engine oil, injector(s), EVAP canister purge valve,<br />

wiring, MAF sensor, ECT sensor, H02S<br />

Short term fuel trim - bwer limit reached H02S signal wire short to earth, EGR system leak,<br />

MAP sensor, H02S, MAP sensor earth wire open<br />

circuitlpoor connection<br />

Short term fuel trim<br />

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

Engine coolant blower motor, low speed<br />

Engine coolant blower motor, high speed<br />

Heated oxygen sensor fH02Sf 1 - heater ~ontrol<br />

Fuel pressure, wiring, MAF sensor<br />

Engine coolant blower motor, air supply blocked,<br />

module cooling fan<br />

Wiring, engine coolant blower motor relay<br />

Wiring, engine coolant blower motor relay<br />

Wiring, H02S<br />

Heated oxygen sensor (W02S) 2 - heater control Wiring, H02S<br />

Module cooling fa Wiring, module cooling fan<br />

Transmission control module (TCM) - toque reduction<br />

signal<br />

Wiring

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