PINPOINT TEST HN: Turbocharger System: Introduction

WARNING: This page does not describe the selected car, but rather 25 other vehicles, including the 2012 Lincoln Navigator L, 2012 Lincoln Navigator, 2012 Lincoln MKZ, 2012 Lincoln MKX, and 2012 Lincoln MKT. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: WHILE CONDUCTING TESTS ON A HOT ENGINE TAKE ALL SAFETY PRECAUTIONS TO PREVENT SKIN CONTACT WITH HOT ENGINE COMPONENTS. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.

WARNING: STRICT OBSERVANCE OF POSTED SPEED LIMITS AND DRIVING CONDITIONS IS MANDATORY WHEN PROCEEDING THROUGH THE FOLLOWING DRIVE CYCLES.
FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.

NOTE: To recreate the original conditions that set the DTC or caused the symptom, the vehicle may require driving.

This pinpoint test is intended to diagnose the following:

turbocharger bypass (TCBY) valve (9K378)
turbocharger bypass 2 (TCBY2) valve (9K378)
turbocharger wastegate regulating valve solenoid (9F490)
wastegate vacuum sensor (9F479)
leaks or restrictions in the intake air system and charge air cooler (CAC)
powertrain control module (PCM) (12A650)

Fig 1: Identifying Turbocharger Bypass Valve (TCBY) Connector
Courtesy of FORD MOTOR CO.

Fig 2: Identifying Turbocharger Bypass Valve 2 (TCBY2) Connector
Courtesy of FORD MOTOR CO.

Fig 3: Identifying Turbocharger Wastegate Regulating Valve Solenoid Connector
Courtesy of FORD MOTOR CO.

Fig 4: Identifying Wastegate Vacuum Sensor Connector
Courtesy of FORD MOTOR CO.

Powertrain Control Module (PCM) Connector

For PCM connector views or reference values, refer to REFERENCE VALUES article.

Vehicle	Connector	Pin	Circuit
Edge, Explorer	154 PIN	E34	SIGRTN
		E13	WVS
		E95	TCWRVS
		E29	TCBY
F-150	198 PIN	E16	TCWRVS
F-150	198 PIN	E3	TCBY
Fiesta	128 PIN	E3	SIGRTN
Focus	154 PIN	E33	SIGRTN
Mustang	190-PIN	E32	SIGRTN
All other vehicles	190-PIN	E16	TCWRVS
		B4	TCBY2
		E14	TCBY