the light for the guage cluster, and other electronics inside the car went out when i was installing my stereo. where is the fuse located on this? i was unable to find it. i looked inside the fusebox under the hood and there were no blown fuses
guage cluster light
- Thread starter jeffro1265
- Start date
here you go
read all of this/////////////////// SECTION 413-00: Instrument Cluster and Panel Illumination 2003 Mustang Workshop Manual
DIAGNOSIS AND TESTING Procedure revision date: 03/18/2002
--------------------------------------------------------------------------------
Instrument Cluster and Panel Illumination Printable View (47 KB)
Refer to Wiring Diagrams Cell 71 , Instrument Illumination for schematic and connector information.
Special Tool(s) 73III Automotive Meter
105-R0057 or equivalent
Inspection and Verification
NOTE: A new instrument cluster must be reconfigured. Refer to Section 418-01 .
NOTE: The instrument panel dimmer switch is a part of the headlamp switch.
Verify the customer concern.
Visually inspect for obvious signs of electrical damage.
Visual Inspection Chart Electrical
Central junction box (CJB) fuses:
5 (15A)
21 (5A)
34 (20A)
37 (5A)
32 (15A)
27 (20A)
Circuitry
Damaged switch
If the fault is not visually evident, determine the symptom and proceed to the Symptom Chart.
Symptom Chart
Symptom Chart Condition Possible Sources Action
The control illumination is inoperative
Central junction box (CJB) fuse 37 (5A).
Circuitry.
Headlamp switch.
Go To Pinpoint Test A .
The instrument cluster illumination is inoperative
Circuitry.
Instrument cluster.
Bulb(s).
Go To Pinpoint Test B .
The climate control illumination is inoperative
Circuitry.
Bulb(s).
Go To Pinpoint Test C .
The audio system illumination is inoperative
Circuitry.
Audio unit.
Go To Pinpoint Test D .
A single illumination source is inoperative
Circuitry.
Switch.
Go To Pinpoint Test E .
Pinpoint Tests
PINPOINT TEST A: THE CONTROL ILLUMINATION IS INOPERATIVE
Test Step Result / Action to Take
A1 CHECK PARKING LAMPS
Place the headlamp switch in the ON position.
Are the exterior lamps on?
Yes
Place the headlamp switch in the OFF position. GO to A2 .
No
REFER to Section 417-01 .
A2 CHECK HEADLAMP SWITCH
Key in OFF position.
Carry out the headlamp switch components test;
Refer to Wiring Diagrams Cell 149 for schematic and connector information.
.
Is the headlamp switch OK?
Yes
RECONNECT the headlamp switch. GO to A3 .
No
INSTALL a new headlamp switch. REFER to Section 417-01 . TEST the system for normal operation.
A3 CHECK CIRCUIT 1045 (DB/WH)
Place the headlamp switch in the ON position.
Rotate the instrument panel dimmer switch to the full illumination position.
Measure voltage between central junction box (CJB) fuse 37 (5A) and ground.
Is the voltage greater than 10 volts?
Yes
REPAIR circuit 19 (LB/RD). TEST the system for normal operation.
No
REPAIR circuit 1045 (DB/WH). TEST the system for normal operation.
PINPOINT TEST B: THE INSTRUMENT CLUSTER ILLUMINATION IS INOPERATIVE
Test Step Result / Action to Take
B1 CHECK VOLTAGE TO INSTRUMENT CLUSTER ILLUMINATION
Disconnect: Instrument Cluster .
Place the headlamp switch in the ON position.
Rotate the instrument panel dimmer switch to the full illumination position.
Measure the voltage between the instrument cluster C220b pin 4, circuit 19 (LB/RD), harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to B2 .
No
REPAIR the circuit. TEST the system for normal operation.
B2 CHECK GROUND TO INSTRUMENT CLUSTER
Place the headlamp switch in the OFF position.
Measure the resistance between the instrument cluster C220b pin 1, circuit 1205 (BK), harness side and ground.
Are the resistances less than 5 ohms?
Yes
INSTALL a new instrument cluster. REFER to Section 413-01 . TEST the system for normal operation.
No
REPAIR the circuit. TEST the system for normal operation.
PINPOINT TEST C: THE CLIMATE CONTROL ILLUMINATION IS INOPERATIVE
Test Step Result / Action to Take
C1 CHECK VOLTAGE TO CLIMATE CONTROL ILLUMINATION
Disconnect: Function Selector Switch C294b .
Place the headlamp switch in the ON position.
Rotate the instrument panel dimmer switch to the full illumination position.
Measure the voltage between the function selector switch C294b pin 2, circuit 19 (LB/RD), harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to C2 .
No
REPAIR the circuit. TEST the system for normal operation.
C2 CHECK GROUND TO CLIMATE CONTROL
Measure the resistance between the function selector switch C294b pin 1, circuit 1205 (BK), harness side and ground.
Is the resistance less than 5 ohms?
Yes
INSTALL new illumination bulb(s). REFER to Section 412-04 .
No
REPAIR the circuit. TEST the system for normal operation.
PINPOINT TEST D: THE AUDIO SYSTEM ILLUMINATION IS INOPERATIVE
Test Step Result / Action to Take
D1 CHECK VOLTAGE TO AUDIO UNIT
Disconnect: Audio Unit C290a.
Place the headlamp switch in the ON position.
Rotate the instrument panel dimmer switch to the full illumination position.
Measure the voltage between the audio unit C290a pin 1, circuit 19 (LB/RD), harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to D2 .
No
REPAIR the circuit. TEST the system for normal operation.
D2 CHECK GROUND TO AUDIO UNIT
Measure the resistance between the audio unit C290a pin 2, circuit 1205 (BK), harness side and ground.
Is the resistance less than 5 ohms?
Yes
REMOVE the audio unit and SEND it to an authorized Ford audio systems repair facility. TEST the system for normal operation.
No
REPAIR the circuit. TEST the system for normal operation.
PINPOINT TEST E: A SINGLE ILLUMINATION SOURCE IS INOPERATIVE
Test Step Result / Action to Take
E1 CHECK VOLTAGE TO THE SINGLE ILLUMINATION SOURCE
Disconnect: Inoperative Illumination Source.
Place the headlamp switch in the ON position.
Rotate the instrument panel dimmer switch to the full illumination position.
Measure the voltage between the inoperative illumination source, circuit 19 (LB/RD), harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to E2 .
No
REPAIR the circuit. TEST the system for normal operation.
E2 CHECK SINGLE ILLUMINATION SOURCE GROUND
Measure the resistance between inoperative illumination source, circuit 1205 (BK), harness side and ground.
Is the resistance less than 5 ohms?
Yes
INSTALL a new component in question. TEST the system for normal operation.
No
REPAIR the circuit. TEST the system for normal operation.
--------------------------------------------------------------------------------
read all of this/////////////////// SECTION 413-00: Instrument Cluster and Panel Illumination 2003 Mustang Workshop Manual
DIAGNOSIS AND TESTING Procedure revision date: 03/18/2002
--------------------------------------------------------------------------------
Instrument Cluster and Panel Illumination Printable View (47 KB)
Refer to Wiring Diagrams Cell 71 , Instrument Illumination for schematic and connector information.
Special Tool(s) 73III Automotive Meter
105-R0057 or equivalent
Inspection and Verification
NOTE: A new instrument cluster must be reconfigured. Refer to Section 418-01 .
NOTE: The instrument panel dimmer switch is a part of the headlamp switch.
Verify the customer concern.
Visually inspect for obvious signs of electrical damage.
Visual Inspection Chart Electrical
Central junction box (CJB) fuses:
5 (15A)
21 (5A)
34 (20A)
37 (5A)
32 (15A)
27 (20A)
Circuitry
Damaged switch
If the fault is not visually evident, determine the symptom and proceed to the Symptom Chart.
Symptom Chart
Symptom Chart Condition Possible Sources Action
The control illumination is inoperative
Central junction box (CJB) fuse 37 (5A).
Circuitry.
Headlamp switch.
Go To Pinpoint Test A .
The instrument cluster illumination is inoperative
Circuitry.
Instrument cluster.
Bulb(s).
Go To Pinpoint Test B .
The climate control illumination is inoperative
Circuitry.
Bulb(s).
Go To Pinpoint Test C .
The audio system illumination is inoperative
Circuitry.
Audio unit.
Go To Pinpoint Test D .
A single illumination source is inoperative
Circuitry.
Switch.
Go To Pinpoint Test E .
Pinpoint Tests
PINPOINT TEST A: THE CONTROL ILLUMINATION IS INOPERATIVE
Test Step Result / Action to Take
A1 CHECK PARKING LAMPS
Place the headlamp switch in the ON position.
Are the exterior lamps on?
Yes
Place the headlamp switch in the OFF position. GO to A2 .
No
REFER to Section 417-01 .
A2 CHECK HEADLAMP SWITCH
Key in OFF position.
Carry out the headlamp switch components test;
Refer to Wiring Diagrams Cell 149 for schematic and connector information.
.
Is the headlamp switch OK?
Yes
RECONNECT the headlamp switch. GO to A3 .
No
INSTALL a new headlamp switch. REFER to Section 417-01 . TEST the system for normal operation.
A3 CHECK CIRCUIT 1045 (DB/WH)
Place the headlamp switch in the ON position.
Rotate the instrument panel dimmer switch to the full illumination position.
Measure voltage between central junction box (CJB) fuse 37 (5A) and ground.
Is the voltage greater than 10 volts?
Yes
REPAIR circuit 19 (LB/RD). TEST the system for normal operation.
No
REPAIR circuit 1045 (DB/WH). TEST the system for normal operation.
PINPOINT TEST B: THE INSTRUMENT CLUSTER ILLUMINATION IS INOPERATIVE
Test Step Result / Action to Take
B1 CHECK VOLTAGE TO INSTRUMENT CLUSTER ILLUMINATION
Disconnect: Instrument Cluster .
Place the headlamp switch in the ON position.
Rotate the instrument panel dimmer switch to the full illumination position.
Measure the voltage between the instrument cluster C220b pin 4, circuit 19 (LB/RD), harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to B2 .
No
REPAIR the circuit. TEST the system for normal operation.
B2 CHECK GROUND TO INSTRUMENT CLUSTER
Place the headlamp switch in the OFF position.
Measure the resistance between the instrument cluster C220b pin 1, circuit 1205 (BK), harness side and ground.
Are the resistances less than 5 ohms?
Yes
INSTALL a new instrument cluster. REFER to Section 413-01 . TEST the system for normal operation.
No
REPAIR the circuit. TEST the system for normal operation.
PINPOINT TEST C: THE CLIMATE CONTROL ILLUMINATION IS INOPERATIVE
Test Step Result / Action to Take
C1 CHECK VOLTAGE TO CLIMATE CONTROL ILLUMINATION
Disconnect: Function Selector Switch C294b .
Place the headlamp switch in the ON position.
Rotate the instrument panel dimmer switch to the full illumination position.
Measure the voltage between the function selector switch C294b pin 2, circuit 19 (LB/RD), harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to C2 .
No
REPAIR the circuit. TEST the system for normal operation.
C2 CHECK GROUND TO CLIMATE CONTROL
Measure the resistance between the function selector switch C294b pin 1, circuit 1205 (BK), harness side and ground.
Is the resistance less than 5 ohms?
Yes
INSTALL new illumination bulb(s). REFER to Section 412-04 .
No
REPAIR the circuit. TEST the system for normal operation.
PINPOINT TEST D: THE AUDIO SYSTEM ILLUMINATION IS INOPERATIVE
Test Step Result / Action to Take
D1 CHECK VOLTAGE TO AUDIO UNIT
Disconnect: Audio Unit C290a.
Place the headlamp switch in the ON position.
Rotate the instrument panel dimmer switch to the full illumination position.
Measure the voltage between the audio unit C290a pin 1, circuit 19 (LB/RD), harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to D2 .
No
REPAIR the circuit. TEST the system for normal operation.
D2 CHECK GROUND TO AUDIO UNIT
Measure the resistance between the audio unit C290a pin 2, circuit 1205 (BK), harness side and ground.
Is the resistance less than 5 ohms?
Yes
REMOVE the audio unit and SEND it to an authorized Ford audio systems repair facility. TEST the system for normal operation.
No
REPAIR the circuit. TEST the system for normal operation.
PINPOINT TEST E: A SINGLE ILLUMINATION SOURCE IS INOPERATIVE
Test Step Result / Action to Take
E1 CHECK VOLTAGE TO THE SINGLE ILLUMINATION SOURCE
Disconnect: Inoperative Illumination Source.
Place the headlamp switch in the ON position.
Rotate the instrument panel dimmer switch to the full illumination position.
Measure the voltage between the inoperative illumination source, circuit 19 (LB/RD), harness side and ground.
Is the voltage greater than 10 volts?
Yes
GO to E2 .
No
REPAIR the circuit. TEST the system for normal operation.
E2 CHECK SINGLE ILLUMINATION SOURCE GROUND
Measure the resistance between inoperative illumination source, circuit 1205 (BK), harness side and ground.
Is the resistance less than 5 ohms?
Yes
INSTALL a new component in question. TEST the system for normal operation.
No
REPAIR the circuit. TEST the system for normal operation.
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