Ford 2003 Mustang Workshop Manual page 2596

A2 CHECK CIRCUIT 511 (LG) FOR AN OPEN
Key in OFF position.
Disconnect: Shift Lock Actuator C2127.
Measure the voltage between the shift lock actuator C2127-3,
Circuit 511 (LG), harness side and ground while depressing
and releasing the brake pedal.
Is the voltage greater than 10 volts with the brake pedal
depressed and 0 volts with the brake pedal released?
A3 CHECK CIRCUIT 294 (WH/LB) FOR AN OPEN
Key in ON position.
Measure the voltage between shift lock actuator C2127-1,
Circuit 294 (WH/LB), harness side and ground.
Is the voltage greater than 10 volts?
A4 TEST CIRCUIT 1205 (BK) FOR AN OPEN
Measure the resistance between shift lock actuator C2127-2,
Circuit 1205 (BK), harness side and ground.
Is the resistance less than 5 ohms?
PINPOINT TEST B: THE SHIFT CONTROL IS OUT OF CORRECT
GEAR RELATIONSHIP
01 .
Yes
GO to A3 .
No
REPAIR the circuit. TEST
the system for normal
operation.
Yes
GO to A4 .
No
REPAIR the circuit. TEST
the system for normal
operation.
Yes
INSTALL a new shift lock
actuator. REFER to Brake
Shift Interlock Actuator
TEST the system for
normal operation.
No
REPAIR the circuit. TEST
the system for normal
operation.
.