MECANICA DIESEL PESADA

Explicación básica pero clara (para mecánicos en formación y curiosos).

Tipo de Turbo	Problemas comunes
Fijo (mecánico)	Fugas, daño de rodamientos, baja presión.
VGT (moderno)	Atascos de aletas, fallos en el actuador, códigos SPN/FMI

“Los turbos modernos exigen buen mantenimiento del sistema EGR y filtros.”
“Siempre revisa las condiciones de aceite y temperatura antes de condenar un turbo.”
“Muchas fallas de turbo en ISX están relacionadas con sensores de presión falsos.”

DTC	PID	SID	FMI	Circuit	Condition Description
111				ECM	No errors detected • flash code only
112†	168	0	3	ECM PWR	Electrical system voltage B+ out•of• range high
113†	168	0	4	ECM PWR	Electrical system voltage B+ out•of• range low
114*	110	0	4	ECT	Engine Coolant Temperature signal out•of•range low
115*	110	0	3	ECT	Engine Coolant Temperature signal out•of•range high
121*	102	0	3	MAP	Intake Manifold Absolute Pressure signal out•of•range high
122*	102	0	4	MAP	Intake Manifold Absolute Pressure signal out•of•range low
123*	102	0	2	MAP	Intake Manifold Absolute Pressure signal in•range fault
124*	164	0	4	ICP	Injection Control Pressure signal out• of•range low
125*	164	0	3	ICP	Injection Control Pressure signal out• of•range high
126*	118	4	N/A	BCP	Engine Brake Control Pressure signal out•of•range low
127*	118	3	N/A	BCP	Engine Brake Control Pressure signal out•of•range high
131*†	91	0	4	APS/IVS	APS signal out•of•range low
132*†	91	0	3	APS/IVS	APS signal out•of•range high
133*†	91	0	2	APS/IVS	APS signal in•range DTC
134*†	91	0	7	APS/IVS	APS signal and IVS disagree
135*†	0	230	11	APS/IVS	Idle Validation Switch circuit fault
136	94	0	4	EFP	Engine Fuel Pressure signal out•of•
					range low
137	94	0	3	EFP	Engine Fuel Pressure signal out•of• range high

141†	84	0	4	VSS	Vehicle Speed Sensor signal out•of• range low
142†	84	0	3	VSS	Vehicle Speed Sensor signal out•of• range high
143	0	21	2	CMP	Incorrect CMP signal signature
145	0	21	12	CMP	CMP signal inactive
146	0	64	12	CKP	CKP signal inactive
147	0	64	2	CKP	Incorrect CKP signal signature
151*†	108	0	3	BAP	Barometric Absolute Pressure signal out•of•range high
152*†	108	0	4	BAP	Barometric Absolute Pressure signal out•of•range low
153†	97	0	4	WIF	Water In Fuel signal out•of•range low
154	171	0	4	IAT	Inlet Air temperature signal out•of• range low
155	171	0	3	IAT	Inlet Air temperature signal out•of•
					range high
161*	105	0	4	MAT	Manifold Air Temperature Signal out• of•range low
162*	105	0	3	MAT	Manifold Air Temperature Signal out•
					of•range high
163*	27	0	4	EGR	Exhaust Gas Recirculation Valve Position Signal out•of•range low
211*	100	0	4	EOP	Engine Oil Pressure signal out•of•
					range low
212*	100	0	3	EOP	Engine Oil Pressure signal out•of• range high
215†	84	0	8	VSS	Vehicle Speed Sensor signal
					frequency out•of•range high
225	100	0	0	EOP	EOP sensor signal in•range fault
231†	0	250	2	ATA	ATA data communication link error
236†	111	0	2	ECL	ECL switch circuit fault
241†	0	42	11	IPR	Injection Control Pressure regulator OCC self test failed
246†	0	56	11	EFAN	Engine Fan • OCC self test fault
247†	121	0	11	BSV	Engine Brake enable OCC self test
					failed
251†	0	38	11	IAH	Inlet Air Heater OCC self test failed
256†	0	55	11	RSE	Radiator Shutter Enable OCC fault
261†	0	27	11	VGT	Variable Geometry Turbo control OCC

					self test failed
267†	0	39	11	ECI	Engine Crank Inhibit OCC self test failed
311*	175	0	4	EOT	Engine Oil Temperature signal out•of•
					range low
312*	175	0	3	EOT	Engine Oil Temperature signal out•of• range high
313**	100	0	1	EWPS	Engine Oil Pressure below warning
					level
314**	100	0	7	EWPS	Engine Oil Pressure below critical level
315*	190	0	0	EWPS	Engine speed above warning level
316	110	0	1	EWPS	Engine Coolant Temperature unable to
					reach commanded set point
321**	110	0	0	EWPS	Engine Coolant Temperature above warning level
322**	110	0	7	EWPS	Engine Coolant Temperature above
					critical level
323**	111	0	1	EWPS	Engine Coolant Level below warning/critical level
324**	71	0	14	IST	Idle Shutdown Timer enabled engine
					shutdown
325	110	0	14	EWPS	Power reduced, matched to cooling system performance
331*	164	0	0	ICP SYS	Injection Control Pressure above
					system working range
332*	164	0	13	ICP	Injection Control Pressure above spec. with engine not running
333*	164	0	10	ICP SYS	Injection Control Pressure above/below
					desired level
334	164	0	7	ICP SYS	ICP unable to achieve setpoint in time (poor performance)
335	164	0	1	ICP SYS	ICP unable to build pressure during
					cranking
341*	0	34	4	EBP	Exhaust Back Pressure signal out•of• range low
342*	0	34	3	EBP	Exhaust Back Pressure signal out•of•
					range high
343*	0	34	0	AMS	Excessive exhaust back pressure (gauge)
344*	0	34	13	EBP	Exhaust back pressure above spec.
					when engine off
345	0	27	2	AMS	Faults detected during VGT portion of the AMS Test

Páginas