Ford Mustang Service Manual: Instrument Cluster (Diagnosis and Testing)
Instrument Cluster and Panel Illumination (Diagnosis and Testing)
Refer to Wiring Diagrams Cell 71 , Instrument Illumination for schematic and connector information.
Special Tool(s)
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73III Automotive Meter 105-R0057 or equivalent |
Inspection and Verification
NOTE: A new instrument cluster must be reconfigured.
NOTE: The instrument panel dimmer switch is a part of the headlamp switch.
1. Verify the customer concern.
2. Visually inspect for obvious signs of electrical damage.
Visual Inspection Chart
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3. If the fault is not visually evident, determine the symptom and proceed to the Symptom Chart.
Symptom Chart
Condition | Possible Sources | Action |
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Pinpoint Tests
PINPOINT TEST A: THE CONTROL ILLUMINATION IS INOPERATIVE
Test Step | Result / Action to Take |
A1 CHECK PARKING LAMPS | Yes Place the headlamp switch in the OFF position. GO to A2 . No REFER to Section. |
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A2 CHECK HEADLAMP SWITCH | Yes RECONNECT the headlamp switch. GO to A3 . No INSTALL a new headlamp switch. REFER to Section. TEST the system for normal operation. |
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A3 CHECK CIRCUIT 1045 (DB/WH) | Yes REPAIR circuit 19 (LB/RD). TEST the system for normal operation. No REPAIR circuit 1045 (DB/WH). TEST the system for normal operation. |
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PINPOINT TEST B: THE INSTRUMENT CLUSTER ILLUMINATION IS INOPERATIVE
Test Step | Result / Action to Take |
B1 CHECK VOLTAGE TO INSTRUMENT CLUSTER ILLUMINATION | Yes GO to B2 . No REPAIR the circuit. TEST the system for normal operation. |
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B2 CHECK GROUND TO INSTRUMENT CLUSTER | Yes INSTALL a new instrument cluster. REFER to Section. TEST the system for normal operation. No REPAIR the circuit. TEST the system for normal operation. |
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PINPOINT TEST C: THE CLIMATE CONTROL ILLUMINATION IS INOPERATIVE
Test Step | Result / Action to Take |
C1 CHECK VOLTAGE TO CLIMATE CONTROL ILLUMINATION | Yes GO to C2 . No REPAIR the circuit. TEST the system for normal operation. |
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C2 CHECK GROUND TO CLIMATE CONTROL | Yes INSTALL new illumination bulb(s). REFER to Section . No REPAIR the circuit. TEST the system for normal operation. |
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PINPOINT TEST D: THE AUDIO SYSTEM ILLUMINATION IS INOPERATIVE
Test Step | Result / Action to Take |
D1 CHECK VOLTAGE TO AUDIO UNIT | Yes GO to D2 . No REPAIR the circuit. TEST the system for normal operation. |
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D2 CHECK GROUND TO AUDIO UNIT | 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. |
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PINPOINT TEST E: A SINGLE ILLUMINATION SOURCE IS INOPERATIVE
Test Step | Result / Action to Take |
E1 CHECK VOLTAGE TO THE SINGLE ILLUMINATION SOURCE | Yes GO to E2 . No REPAIR the circuit. TEST the system for normal operation. |
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E2 CHECK SINGLE ILLUMINATION SOURCE GROUND | 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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Instrument Cluster Bulb
Removal and Installation
1. Remove the instrument cluster. For additional information, refer to Section.
2. Remove the necessary instrument cluster bulbs by rotating the bulb one quarter turn counterclockwise and lifting straight out of the instrument cluster.
3. To install, reverse the removal procedure.
- Principles of Operation
- Instrument Cluster Replacement
- Inspection and Verification
- Instrument Cluster Self-Diagnostic Mode
- Pinpoint Tests
Instrument Cluster (Description and Operation)
Instrument Cluster and Panel Illumination (Diagnosis and Testing)
Refer to Wiring Diagrams Cell 71 , Instrument Illumination for schematic and
connector information.
Special Tool(s)
73III ...
Principles of Operation
Principles of Operation
NOTE: A new instrument cluster must be reconfigured. Refer to
Section.
The instrument cluster is a hybrid electronic cluster (HEC). The
instrument cluster uses both hardw ...
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Pinpoint Tests
Inspection and Verification
WARNING: Use of any other than the approved DOT 3 brake fluid will
cause permanent
damage to brake components and will render the brakes inoperative.
WARNING: Brake fluid contains polyglycol ethers and polyglycols. Avoid contact
...
Disassembly
Disassembly
1. CAUTION: Hand tighten the special tool to prevent gear damage.
CAUTION: Support the output shaft while using the press to prevent
damage to the
shaft or gears.
Using the special tool and a press, remove first gear, the output shaft re ...