2003 FORD MUSTANG Workshop Manual

Page 3249 of 4378

FORD MUSTANG 2003  Workshop Manual REMOVAL AND INSTALLATION 
Vacuum Control Motor —Air Damper Door 
Removal  1. Remove the instrument panel. For additional information, refer to  Section 501 - 12  . 
2. Disconnect the vacuum hose. 
3

Page 3250 of 4378

FORD MUSTANG 2003  Workshop Manual REMOVAL AND INSTALLATION 
Vacuum Control Motor —Windshield/Defroster Door 
Removal  1. Remove the instrument panel. For additional information, refer to  Section 501 - 12  . 
2. Unclip the control a

Page 3251 of 4378

FORD MUSTANG 2003  Workshop Manual REMOVAL AND INSTALLATION 
Vacuum Reservoir Tank 
Removal 
1. Access the vacuum reservoir tank through the glove compartment. 
2. Remove the reservoir.  1. Disconnect the vacuum connector. 
2. Remove t

Page 3252 of 4378

FORD MUSTANG 2003  Workshop Manual DESCRIPTION AND OPERATION 
Instrument Cluster and Panel Illumination 
The instrument cluster and panel illumination system illuminates the following components: 
�zinstrument cluster (10849) 
�z audio

Page 3253 of 4378

FORD MUSTANG 2003  Workshop Manual DIAGNOSIS AND TESTING 
Instrument Cluster and Panel Illumination 
Refer to Wiring Diagrams Cell 
71  , Instrument Illumination for schematic and connector information. 
Inspection and Verification 
NO

Page 3254 of 4378

FORD MUSTANG 2003  Workshop Manual Pinpoint Tests 
PINPOINT TEST A: THE CONTROL ILLUMINATION IS INOPERATIVE 
PINPOINT TEST B: THE INSTRUMENT CLUSTER ILLUMINATION IS 
INOPERATIVE  �z
Bulb(s). 
�z The climate control 
illumination is ino

Page 3255 of 4378

FORD MUSTANG 2003  Workshop Manual PINPOINT TEST C: THE CLIMATE CONTROL ILLUMINATION IS 
INOPERATIVE  illumination position. 
�z Measure the voltage between the instrument cluster C220b 
pin 4, circuit 19 (LB/RD), harness side and grou

Page 3256 of 4378

FORD MUSTANG 2003  Workshop Manual PINPOINT TEST D: THE AUDIO SYSTEM ILLUMINATION IS 
INOPERATIVE  �z
Measure the resistance between the function selector switch 
C294b pin 1, circuit 1205 (BK), harness side and ground. 
�z Is the resi