Ford 2003 Mustang Workshop Manual page 2355

Control System Breakout Box and TR1 circuit pin 4 at
digital TR sensor connector harness side.
Measure the resistance between the PCM test pin 49 at
the EEC-V Control System Breakout Box and TR2 circuit
pin 5 at digital TR sensor connector harness side.
Measure the resistance between the PCM test pin 50 at
the EEC-V Control System Breakout Box and TR4 circuit
pin 6 at digital TR sensor connector harness side.
Measure the resistance between the PCM test pin 64 at
the EEC-V Control System Breakout Box and TR3A
circuit pin 3 at digital TR sensor connector harness side.
Are all resistances less than 5 ohms?
C8 CHECK PCM HARNESS CIRCUITS FOR SHORT TO
GROUND OR POWER
Yes
Measure the resistance between PCM test pin 91 and