Ford 2003 Mustang Workshop Manual page 3020

B2 CHECK THE SPEED CONTROL
ACTUATOR CABLE
NOTE: The speed control actuator cable
must be disconnected at both ends while
carrying out this test.
Check the speed control actuator cable
for sticking or binding at the speed
control servo and throttle body.
Is the speed control actuator cable
OK?
B3 CHECK THE SPEED CONTROL SERVO
INSTALL a known good speed control
servo.
Test drive the vehicle for correct
operation.
Does the speed control operate
correctly?
PINPOINT TEST C: THE SPEED CONTROL DOES NOT DISENGAGE
WHEN THE BRAKES ARE APPLIED
C1 CHECK THE BPP SWITCH CIRCUITRY
Key in OFF position.
Disconnect: Speed Control Servo C122 .
Measure the voltage between speed control servo C122 Pin 4,
Circuit 511 (LG), harness side and speed control servo C122
Pin 10, Circuit 1205 (BK), harness side, while depressing the
brake pedal.
Is the voltage greater than 10 volts?
PINPOINT TEST D: THE SPEED CONTROL DOES NOT DISENGAGE
WHEN THE CLUTCH IS APPLIED
D1 CHECK THE CLUTCH PEDAL POSITION (CPP) SWITCH
Key in OFF position.
Disconnect: CPP Switch C2072.
Measure the resistance between CPP switch pin 2
(component side) and CPP switch pin 1 (component side),
Yes
GO to
No
INSTALL a new speed control actuator cable;
REFER to
TEST the system for normal operation.
Yes
INSTALL a new speed control servo; REFER
to
system for normal operation.
No
INSTALL a new PCM; REFER to
14
Test Step
Test Step
B3 .
Actuator Cable—Speed Control
Actuator—Speed Control Servo
. TEST the system for normal operation.
Result / Action to Take
Yes
INSTALL a new speed
control servo; REFER to
Actuator—Speed
Control Servo
the system for normal
operation.
No
REPAIR Circuit 810
(RD/LG) and Circuit 511
(LG) as necessary.
TEST the system for
normal operation.
Result / Action to Take
Yes
INSTALL a new speed
control servo; REFER to
Actuator—Speed Control
.
. TEST the
Section 303-
. TEST