2003 FORD MUSTANG Workshop Manual

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Page 3017 of 4378

FORD MUSTANG 2003 Workshop Manual �z
Is any voltage present? A10 CHECK CIRCUIT 151 (LB/BK) FOR SHORT TO POWER
�z
Key in OFF position.
�z Disconnect: Air Bag Sliding Contact C218a.
�z Key in ON position.
�z Measure the voltage bet

Page 3018 of 4378

FORD MUSTANG 2003 Workshop Manual �z
Is the resistance between 612 and 748 ohms? REFER to
Switch —
Speed Control
Actuator . TEST the
system for normal
operation. A13 CHECK THE BPP SWITCH CIRCUITRY
�z
Measure the resistance b

Page 3019 of 4378

FORD MUSTANG 2003 Workshop Manual PINPOINT TEST B: THE SET SPEED FLUCTUATES �z
Is the resistance less than 5 ohms? A16 CHECK CIRCUIT 239 (WH/OG) FOR AN OPEN
�z
Disconnect: PCM C175.
�z Connect EEC- V 104-Pin Breakout Box.
�z Meas

Page 3020 of 4378

FORD MUSTANG 2003 Workshop Manual PINPOINT TEST C: THE SPEED CONTROL DOES NOT DISENGAGE
WHEN THE BRAKES ARE APPLIED
PINPOINT TEST D: THE SPEED CONTROL DOES NOT DISENGAGE
WHEN THE CLUTCH IS APPLIED B2 CHECK THE SPEED CONTROL
ACTUA

PINPOINT TEST C: THE SPEED CONTROL DOES NOT DISENGAGE
WHEN THE BRAKES ARE APPLIED
PINPOINT TEST D: THE SPEED CONTROL DOES NOT DISENGAGE
WHEN THE CLUTCH IS APPLIED B2 CHECK THE SPEED CONTROL
ACTUATOR CABLE z
NOTE: The speed control actuator cable
must be disconnected at both ends while
carrying out this test.
z Check the speed control actuator cable
for sticking or binding at the speed
control servo and throttle body.
z Is the speed control actuator cable
OK? Yes
GO to
B3 .
No
INSTALL a new speed control actuator cable;
REFER to Actuator Cable — Speed Control .
TEST the system for normal operation. B3 CHECK THE SPEED CONTROL SERVO
z
INSTALL a known good speed control
servo.
z Test drive the vehicle for correct
operation.
z Does the speed control operate
correctly? Yes
INSTALL a new speed control servo; REFER
to
Actuator — Speed Control Servo . TEST the
system for normal operation.
No
INSTALL a new PCM; REFER to Section 303 -
14 . TEST the system for normal operation.
Test Step Result / Action to Take
C1 CHECK THE BPP SWITCH CIRCUITRY
z
Key in OFF position.
z Disconnect: Speed Control Servo C122 .
z 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.
z Is the voltage greater than 10 volts? Yes
INSTALL a new speed
control servo; REFER to
Actuator
— Speed
Control Servo . TEST
the system for normal
operation.
No
REPAIR Circuit 810
(RD/LG) and Circuit 511
(LG) as necessary.
TEST the system for
normal operation. Test Step Result / Action to Take
D1 CHECK THE CLUTCH PEDAL POSITION (CPP) SWITCH
z
Key in OFF position.
z Disconnect: CPP Switch C2072.
z Measure the resistance between CPP switch pin 2
(component side) and CPP switch pin 1 (component side), Yes
INSTALL a new speed
control servo; REFER to
Actuator
— Speed Control Klj . 10 ba
132003 Mustang Workshop Manual
18. 11. 2011file:///C:/Ford/2000 - 2004/tsocache/SHEF_2308/S3B~us~en~ ...

Page 3021 of 4378

FORD MUSTANG 2003 Workshop Manual PINPOINT TEST E: THE SPEED CONTROL SWITCH IS
INOPERATIVE—
COAST
PINPOINT TEST F: THE SPEED CONTROL SWITCH IS
INOPERATIVE— SET/ACCEL while depressing and releasing clutch pedal.
�z Is the resis

Page 3022 of 4378

FORD MUSTANG 2003 Workshop Manual PINPOINT TEST G: THE SPEED CONTROL SWITCH IS
INOPERATIVE —
RESUME
PINPOINT TEST H: THE SPEED CONTROL SWITCH IS
INOPERATIVE— OFF �z
Is the resistance between 612 and 748 ohms? No
INSTALL a new

Page 3023 of 4378

FORD MUSTANG 2003 Workshop Manual �z
Is the resistance less than 5 ohms? INSTALL a new speed
control actuator switch;
REFER to
Switch —
Speed Control
Actuator . TEST the
system for normal
operation. Klj . 13 ba
1320

Page 3024 of 4378

FORD MUSTANG 2003 Workshop Manual GENERAL PROCEDURES
Switch Adjustment —
Deactivator
1. Adjust the deactivator switch. 1. Disconnect the switch hook from the brake pedal.
2. Depress the switch hook and plunger into the deactivat

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