Ford 2003 Mustang Workshop Manual page 2358

97, 51, 77, 103, and 91 at the EEC-V Control System
Breakout Box and chassis ground.
Are all resistances greater than 10,000 ohms?
C9 CHECK FOR SHORT BETWEEN TR/PCM INPUT
SIGNAL CIRCUITS
For vehicles equipped with a 3.8L engine measure the
resistance between test pin 3 and pins 49, 50, and 64 at
the EEC-V Control System Breakout Box.
For vehicles equipped with a 4.6L engine measure the
resistance between test pin 34 and pins 49, 50, and 64
at the EEC-V Control System Breakout Box.
For vehicles equipped with a 3.8L engine measure the
resistance between test pin 49 and pins 3, 50, and 64 at
the EEC-V Control System Breakout Box.
For vehicles equipped with a 4.6L engine measure the
Yes
INSTALL a new PCM. REFER
to Section 303-14 .
RECONNECT all components.
CLEAR DTCs. REPEAT OBD
Tests.
No
REPAIR shorts on circuits
having less than 10,000 ohms
between other TR/PCM input
signal circuits. RECONNECT
all components. CLEAR DTCs.
REPEAT OBD Tests.