Ford 2003 Mustang Workshop Manual page 3446

The high beams
are inoperative
One low beam
headlamp is
inoperative
One high beam
headlamp is
inoperative
The headlamps
are on
continuously
The flash-to-
pass feature is
inoperative
Pinpoint Tests
PINPOINT TEST A: BOTH HEADLAMPS ARE INOPERATIVE
A1 CHECK THE VOLTAGE TO THE HEADLAMP SWITCH
Disconnect: Headlamp Switch C205.
Measure the voltage between headlamp switch C205 Pin
B1, Circuit 196 (DB/OG), harness side and ground.
Is the voltage greater than 10 volts?
A2 CHECK CIRCUIT 15 (RD/YE) FOR OPEN
Disconnect: Multifunction Switch C202a.
Central junction
box (CJB) fuse
38 (20A).
Circuitry.
Multifunction
switch.
Central junction
box (CJB) fuse
(s):
10 (7.5A)
(LH).
4 (7.5A)
(RH).
Headlamp bulb.
Circuitry.
Headlamp bulb.
Circuitry.
Headlamp
switch.
Circuitry.
Multifunction
switch.
Circuitry.
Multifunction
switch.
Test Step
Go To Pinpoint Test C
Go To Pinpoint Test D
Go To Pinpoint Test E .
Go To Pinpoint Test F .
CHECK Circuit 196 (DB/OG) for
an open. REPAIR if necessary. IF
OK, INSTALL a new multifunction
switch; REFER to Section 211-
05 . TEST the system for normal
operation.
Result / Action to Take
Yes
GO to A2
No
REPAIR the circuit. TEST
the system for normal
operation.
Yes
.
.
.