Pinpoint Test HN: Turbocharger System: Introduction

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 (9961 pressure actuated, 9E882 vacuum actuated)
wastegate vacuum sensor (9F479)
leaks or restrictions in the intake air system and charge air cooler (CAC)

PCM (12A650)

TURBOCHARGER SPECIFICATIONS

Vehicles	Pressure Actuated Wastegate	Vacuum Actuated Wastegate (Normally Closed)	Vacuum Actuated Wastegate (Normally Open)
Fiesta 1.0L, Focus 1.0L, Fusion 1.5L			X
Edge, Explorer 2.3L, F-150 2.7L, MKX		X
All others	X

Fig 1: Identifying Turbocharger Bypass (TCBY) Valve Connector

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Expedition, Navigator	A	2 1	TCBY VPWR
Explorer 3.5L, Flex, MKS, MKT 3.5L, Taurus 3.5L	B	2 1	TCBY VPWR
Explorer 2.3L, Focus	C	1 2	TCBY VPWR
Fiesta 1.6L	B	1 2	TCBY VPWR
Fiesta 1.0L, MKT 2.0L, Taurus 2.0L	C	2 1	TCBY VPWR
Fusion 2.0L, MKZ	D	1 2	TCBY VPWR
MKC, Transit	A	1 2	TCBY VPWR
All other vehicles	D	2 1	TCBY VPWR

Fig 2: Identifying Turbocharger Bypass 2 (TCBY2) Valve Connector

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

Courtesy of FORD MOTOR CO.

Vehicle	Connector	Pin	Circuit
Escape/Kuga 1.6L, Fiesta, Fusion 1.5L, Transit Connect	A	2 1	TCWRVS VPWR
Edge, F-150 2.7L, MKX	B	2 1	TCWRVS VPWR
Escape/Kuga 2.0L, F-150 3.5L, Mustang	C	1 2	TCWRVS VPWR
Explorer, Flex, MKS, MKT, Taurus 3.5L	D	2 1	TCWRVS VPWR
All other vehicles	D	1 2	TCWRVS VPWR

Fig 4: Identifying Wastegate Vacuum Sensor Connector

Courtesy of FORD MOTOR CO.

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

Powertrain Control Module (PCM) Connector

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

Vehicle	Connector	Pin	Circuit
Edge 2.0L, Explorer 2.3L, MKX 2.0L	198 PIN	E20 E35 E16 E3	SIGRTN WVS TCWRVS TCBY
Edge 2.7L, F-150 2.7L, MKX 2.7L	198 PIN	E20 B33 E16 E3	SIGRTN WVS TCWRVS TCBY
Explorer GTDI 3.5L, Flex, MKS, MKT 3.5L, Taurus GTDI 3.5L	198 PIN	E16 E19 E3	TCWRVS TCBY2 TCBY
Fiesta GTDI 1.6L	198 PIN	E47 E48	TCWRVS TCBY
Fiesta 1.0L, Focus 1.0L	198 PIN	E47 E46	TCWRVS TCBY
All other vehicles	198 PIN	E16 E3	TCWRVS TCBY