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.
HN3 SENSOR CORRELATION
• Access the PCM and monitor the BARO (PRESS), MAP (PRESS), TCBP (PRESS) and WGATE_PRES (PRESS) PIDs.
Is the WGATE_PRES PID reading within 6.77 kPa (0.98 psi) of the other PID readings?
Yes | No |
|---|---|
GO to HN5 . | CHECK the turbocharger wastegate vacuum system hoses for restrictions. REPAIR as necessary. If no concerns are present, INSTALL a new Wastegate Vacuum Sensor. Clear the PCM DTCs. REPEAT the self-test. |
HN4 CHECK FOR VREF AT THE SENSOR
• Ignition OFF.
• Wastegate Vacuum Sensor connector disconnected.
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) Wastegate Vacuum Sensor Connector, Harness Side | ( - ) Wastegate Vacuum Sensor Connector, Harness Side |
|---|---|
VREF - Pin 1 | SIGRTN |
Is the voltage between 4.5 - 5.5 V?
Yes | No |
|---|---|
GO to HN6 . | GO to Pinpoint Test C . |
HN5 CHECK FOR VOLTAGE AT THE COMPONENT
Note: This step applies to multiple components, only measure the circuits that apply to the vehicle and component being diagnosed.
• Ignition OFF.
• For TCBY,
• TCBY Valve connector disconnected.
• Ignition ON, engine OFF.
• Measure the voltage between:
( + ) TCBY Valve Connector, Harness Side | ( - ) |
|---|---|
VPWR | Ground |
• For TCBY2,
• TCBY2 Valve connector disconnected.
• Ignition ON, engine OFF.
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.