Ford 2003 Mustang Workshop Manual page 686

Depress the brake pedal while checking the stoplamps.
Do the stop lamps illuminate?
D2 CHECK THE BRAKE PEDAL INPUT TO THE ANTI-LOCK
BRAKE CONTROL MODULE
Key in OFF position.
Disconnect: Anti-Lock Brake Control Module C141.
Measure the voltage between anti-lock brake control module
C141 Pin 6, 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 zero volts with the brake pedal released?
PINPOINT TEST E: DTC C1095, ABS HYDRAULIC PUMP MOTOR
FAILURE
E1 CHECK THE PUMP MOTOR FOR CONTINUOUS OPERATION
Check the pump motor for continuous operation.
Is the pump motor running continuously?
E2 CHECK CIRCUIT 534 (YE/LG) FOR AN OPEN
Key in OFF position.
Disconnect: Anti-Lock Brake Control Module C141.
Measure the voltage between anti-lock brake control module C141
Pin 13, Circuit 534 (YE/LG), harness side, and ground.
Test Step
Yes
GO to D2 .
No
REFER to Section 417-
01 .
Yes
INSTALL a new anti-lock
brake control module;
REFER to Module .
REPEAT the self-test.
No
REPAIR Circuit 511 (LG)
and Circuit 810 (RD/LG)
as necessary. CLEAR
the DTCs. REPEAT the
self-test.
Result / Action to
Take
Yes
INSTALL a new
anti-lock brake
control module;
REFER to Module
REPEAT the self-
test.
No
GO to E2 .
Yes
GO to E3 .
No
REPAIR the circuit.
CLEAR the DTCs.
REPEAT the self-
test.
.