PINPOINT TEST HN: Turbocharger System: Introduction: Notes

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 (9E882)
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 Connector Terminals
Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Edge, Escape 2.0L, Explorer 2.0L, Focus	A	1 2	TCBY VPWR
Escape 1.6L, Fusion 1.5L, Fusion 1.6L, Transit Connect	B	2 1	TCBY VPWR
F-150	C	1 2	TCBY VPWR
Fiesta 1.6L	D	1 2	TCBY VPWR
Fiesta 1.0L, MKT 2.0L, Taurus 2.0L	A	2 1	TCBY VPWR
Fusion 2.0L, MKZ	B	1 2	TCBY VPWR
All other vehicles	D	2 1	TCBY VPWR

Fig 2: Identifying Turbocharger Bypass 2 Valve Connector Terminals

Courtesy of FORD MOTOR CO.

Pin	Circuit
2	TCBY2 (Turbocharger Bypass 2)
1	VPWR (Vehicle Power)

Fig 3: Identifying Turbocharger Wastegate Regulating Valve Solenoid Connector Terminals

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Edge, Escape 2.0L	A	1 2	TCWRVS VPWR
Explorer 2.0L, F-150, Focus, Fusion 2.0L, MKZ	B	1 2	TCWRVS VPWR
Explorer 3.5L, Flex, MKS, MKT, Taurus	B	2 1	TCWRVS VPWR
All other vehicles	C	2 1	TCWRVS VPWR

Fig 4: Identifying Wastegate Vacuum Sensor Connector Terminals

Courtesy of FORD MOTOR CO.

Pin	Circuit
2	SIGRTN (Signal Return)
3	WVS (Wastegate Vacuum Sensor)
1	VREF (Reference Voltage)