Typical Diagnostic Reference Values

An attempt is made to provide as much information as possible. Some vehicles may not display all input and output signals.

Reference values may vary 20% depending on operating conditions, engine load, temperature, altitude, vehicle speed and other factors. RPM values are axle and tire dependent. Refer to PARAMETER IDENTIFICATION (PID) , for PID descriptions.

Values are taken at an altitude of approximately 182.9 m (600 ft) above sea level.

Refer to the ACRONYMS AND DEFINITIONS for technical terms applicable to Ford Motor Company products.

For detailed transmission diagnostics, refer to the appropriate Automatic Transaxle/Transmission article .

Footnotes are referenced throughout the Typical Diagnostic Reference Value Charts. A letter in parentheses next to a value indicates supplemental information is applicable.

1. 1 volt equals 4.5 MPa (652 psi) and 4.45 volts equals 28 MPa (4061 psi)
2. 4.9 volts equals -40°C (-40°F) and 0.5 volts equals 100°C (212°F)
3. 4.3 volts equals 0°C (32°F) and 2.5 volts equals 50°C (122°F)
4. 0 volts equals disengaged and battery voltage equals engaged
5. CT equals 0.64 - 1.28 volts and WOT equals 2.59 - 3.89 volts
6. CT equals 3.43 - 4.69 volts and WOT equals 0.73 - 1.28 volts
7. CT equals 1.13 - 1.88 volts and WOT equals 3.03 - 4.55 volts
8. 1.35 volts equals 103 kPa (14.9 psi) and 4.5 volts equals 300 kPa (43.5 psi)