Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
( + ) TCBY Valve Connector, Component Side | ( - ) TCBY Valve Connector, Component Side |
|---|---|
TCBY | VPWR |
• For TCBY2,
• Measure the resistance between:
( + ) TCBY2 Valve Connector, Component Side | ( - ) TCBY2 Valve Connector, Component Side |
|---|---|
TCBY2 - Pin 2 | VPWR - Pin 1 |
• For turbocharger wastegate regulating valve solenoid,
• Measure the resistance between:
( + ) Turbocharger Wastegate Regulating Valve Solenoid Connector, Component Side | ( - ) Turbocharger Wastegate Regulating Valve Solenoid Connector, Component Side |
|---|---|
TCWRVS | VPWR |
Are the resistances between 5 - 60 ohms?
Yes | No |
|---|---|
GO to HN10 . | INSTALL a new component. REFER to the Workshop Manual Section 303-14, Electronic Engine Controls. Clear the PCM DTCs. REPEAT the self-test. |
HN10 CHECK THE WIRING HARNESS
Note: This step applies to multiple components, only measure the circuits that apply to the vehicle and component being diagnosed.
• Ignition OFF.
• PCM connector connected.
• For TCBY or TCBY2,
• Suspect TCBY Solenoid connector connected.
• Ignition ON, engine OFF.
• Access the PCM and monitor the TURBO_BP1_STAT (MODE) PID.
• Access the PCM and monitor the TURBO_BP2_STAT (MODE) PID.
• For the turbocharger wastegate regulating valve solenoid,
• Turbocharger Wastegate Regulating Valve Solenoid connector connected.
• Ignition ON, engine OFF.
• Access the PCM and monitor the TWGATE_STAT (MODE) PID.
• For wastegate vacuum sensor,
• Wastegate Vacuum Sensor connector connected.
• Ignition ON, engine OFF.
• Access the PCM and monitor the WGATE_PRES_F (MODE) PID.
• While observing the PID, wiggle, shake, and bend small sections of the wiring harness while working from the component to the PCM.
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.