Ford 2003 Mustang Workshop Manual page 3539

(PK/LB) FOR THE SOURCE OF THE CONCERN — ANTI-
LOCK BRAKE CONTROL MODULE C135 DISCONNECTED
Key in ON position.
Measure the voltage between DLC C251 Pin 2, Circuit
914 (TN/OG), harness side and C251 Pin 4, Circuit
1205 (BK); and between DLC C251 Pin 2, Circuit 914
(TN/OG), harness side and C251 Pin 16, Circuit 1047
(LG/RD), harness side.
Measure the voltage between DLC C251 Pin 10,
Circuit 915 (PK/LB), harness side and C251 Pin 4,
Circuit 1205 (BK); and between DLC C251 Pin 10,
Circuit 915 (PK/LB), harness side and C251 Pin 16,
Circuit 1047 (LG/RD), harness side.
Is the voltage zero volts for any measurement?
G6 CHECK CIRCUIT 914 (TN/OG) AND CIRCUIT 915
(PK/LB) FOR THE SOURCE OF THE CONCERN — IN-LINE
C144 DISCONNECTED
Key in OFF position.
Disconnect: In-Line C144.
Key in ON position.
Measure the voltage between DLC C251 Pin 2, Circuit
914 (TN/OG), harness side and C251 Pin 4, Circuit
1205 (BK); and between DLC C251 Pin 2, Circuit 914
(TN/OG), harness side and C251 Pin 16, Circuit 1047
(LG/RD), harness side.
Measure the voltage between DLC C251 Pin 10,
Circuit 915 (PK/LB), harness side and C251 Pin 4,
Yes
GO to G6 .
No
INSTALL a new anti-lock brake
control module. For additional
information on the anti-lock brake
control module without traction
control, REFER to Section 206-
09A . For additional information
on the anti-lock brake control
module with traction control,
REFER to Section 206-09B
TEST the system for normal
operation.
Yes
GO to G8 .
No
REPAIR the circuit(s) in question
between in-line C144 and the
anti-lock brake control module
C135. REFER to Communication
Circuit Wiring Repair . TEST the
system for normal operation.
.