Symptom Charts

Symptom Chart - Instrument Cluster (IC)

Condition	Possible Sources	Action
No communication with the instrument cluster (IC)	Fuse(s) Wiring, terminals or connectors Instrument cluster (IC)	REFER to MODULE COMMUNICATIONS NETWORK .
No communication with the smart junction box (SJB)	Fuse(s) Wiring, terminals or connectors SJB	REFER to MODULE COMMUNICATIONS NETWORK .
The instrument cluster (IC) is inoperative	Fuse(s) Wiring, terminals or connectors Instrument cluster (IC)	Go to Pinpoint Test A .
Incorrect fuel gauge indication	Wiring, terminals or connectors Fuel pump module Fuel sender Fuel tank SJB Instrument cluster (IC)	Go to Pinpoint Test B .
The boost gauge is inoperative (Shelby GT 500 only)	PCM Instrument cluster (IC)	Go to Pinpoint Test C .
Incorrect temperature gauge indication	PCM Instrument cluster (IC)	Go to Pinpoint Test D .
Incorrect voltage gauge indication	Charging system concern Instrument cluster (IC)	Go to Pinpoint Test E .
The tachometer is inoperative	PCM Instrument cluster (IC)	Go to Pinpoint Test F .
Incorrect oil pressure gauge indication	Wiring, terminals or connectors Engine oil pressure switch SJB Instrument cluster (IC)	Go to Pinpoint Test G .
The speedometer/odometer is inoperative	PCM Instrument cluster (IC)	Go to Pinpoint Test H .
Incorrect speedometer indication	Tire size configuration Axle ratio configuration PCM concern Instrument cluster (IC)	Go to Pinpoint Test I .
The low oil pressure warning indicator is never/always on	Wiring, terminals or connectors Engine oil pressure switch SJB Instrument cluster (IC)	Go to Pinpoint Test J .
The engine over temperature warning indicator is never/always on	PCM Instrument cluster (IC)	Go to Pinpoint Test K .
The brake warning indicator is never on	Wiring, terminals or connectors Parking brake switch Brake fluid level switch SJB Instrument cluster (IC)	Go to Pinpoint Test L .
The brake warning indicator is always on	Wiring, terminals or connectors Parking brake switch Brake fluid level switch SJB Instrument cluster (IC)	Go to Pinpoint Test M .
The ABS warning indicator is never/always on	ABS module Instrument cluster (IC)	Go to Pinpoint Test N .
The air bag warning indicator is never/always on	Wiring, terminals or connectors Restraints control module (RCM) Instrument cluster (IC)	Go to Pinpoint Test O .
The safety belt warning indicator is never/always on	Wiring, terminals or connectors RCM Instrument cluster (IC)	Go to Pinpoint Test P .
The door ajar warning indicator is never/always on	SJB Instrument cluster (IC)	Go to Pinpoint Test Q .
The malfunction indicator lamp (MIL) is never/always on	PCM Instrument cluster (IC)	Go to Pinpoint Test R .
The powertrain malfunction (wrench) warning indicator is never/always on	PCM Instrument cluster (IC)	Go to Pinpoint Test S .
The O/D off indicator is never/always on	PCM Instrument cluster (IC)	Go to Pinpoint Test T .
The charging system warning indicator is never/always on	Charging system concern PCM Instrument cluster (IC)	Go to Pinpoint Test U .
The check fuel cap indicator is never/always on	PCM Instrument cluster (IC)	Go to Pinpoint Test V .
The high beam indicator is never/always on	SJB Instrument cluster (IC)	Go to Pinpoint Test W .
The turn signal indicator is never/always on	SJB Instrument cluster (IC)	Go to Pinpoint Test X .
The speed control indicator is never/always on	PCM Instrument cluster (IC)	Go to Pinpoint Test Y .
The traction control indicator is never/always on	ABS module Instrument cluster (IC)	Go to Pinpoint Test Z .
The daytime running lamps (DRL) indicator is never/always on	SJB Instrument cluster (IC)	Go to Pinpoint Test AA .
The low fuel warning indicator is never/always on	Instrument cluster (IC)	Go to Pinpoint Test AB .
The performance shift warning indicator is never/always on (Shelby GT 500 only)	PCM Instrument cluster (IC)	Go to Pinpoint Test AC .
The shift indicator is never/always on (Shelby GT 500 only)	PCM Instrument cluster (IC)	Go to Pinpoint Test AD .
The tire pressure monitoring system (TPMS) warning indicator is never/always on	TPMS concern SJB Instrument cluster (IC)	Go to Pinpoint Test AE .
The anti-theft indicator is never/always on	PCM Instrument cluster (IC)	Go to Pinpoint Test AF .

Symptom Chart - Information And Message Center

Condition	Possible Sources	Action
The message center is not operating correctly	Message center switch concern Instrument cluster (IC)	Go to Pinpoint Test AG .
The message center display is blank	Instrument cluster (IC)	PRESS the message center INFO button. If the message center display is still blank, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The message center switch does not operate correctly	Wiring, terminals or connectors Message center switch Instrument cluster (IC)	Go to Pinpoint Test AH .
The CHECK TRAC CONTROL warning is inoperative	Instrument cluster (IC)	CHECK the traction control system for correct operation. If the traction control system does not operate correctly, REFER to VEHICLE DYNAMIC SYSTEMS . If the traction control system operates correctly, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The TURN SIGNAL ON message is inoperative	Instrument cluster (IC)	CHECK the turn signal indicators for correct operation. If the turn signal indicators do not operate correctly, go to Pinpoint Test X . If the turn signal indicators operate correctly, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The CHECK CHARGING SYSTEM message is inoperative	Instrument cluster (IC)	CHECK the charging system warning indicator for correct operation. If the charging system warning indicator does not operate correctly, go to Pinpoint Test U . If the charging system warning indicator operates correctly, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The BRAKE SYSTEM FAILURE warning is inoperative	Instrument cluster (IC)	CHECK the brake warning indicator for correct operation. If the brake warning indicator does not operate correctly, go to Pinpoint Test L . If the brake warning indicator operates correctly, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The LOW FUEL LEVEL message is inoperative	Instrument cluster (IC)	CHECK the fuel gauge for correct operation. If the fuel gauge does not operate correctly, go to Pinpoint Test B . If the fuel gauge operates correctly, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The LOW OIL PRESSURE warning is inoperative	Instrument cluster (IC)	CHECK the oil pressure gauge for correct operation. If the oil pressure gauge does not operate correctly, go to Pinpoint Test G . If the oil pressure gauge operates correctly, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The CHECK FUEL CAP message is inoperative/always on	PCM Instrument cluster (IC)	Go to Pinpoint Test AI .
The DRIVER DOOR, PASSENGER DOOR, AND TRUNK AJAR warning is inoperative	Instrument cluster (IC)	CHECK the interior lamps for correct operation. If the interior lamps do not operate correctly, REFER to INTERIOR LIGHTING . If the interior lamps operate correctly, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The PARK BRAKE ON message is inoperative	Instrument cluster (IC)	CHECK the brake warning indicator for correct operation. If the brake warning indicator does not operate correctly, go to Pinpoint Test L . If the brake warning indicator operates correctly, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.

Symptom Chart - Warning Chimes

Condition	Possible Sources	Action
All the chimes are inoperative	Instrument cluster (IC)	INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The key-in-ignition chime is inoperative	Wiring, terminals or connectors Key-in-ignition switch (part of the ignition switch) Instrument cluster (IC)	Go to Pinpoint Test AJ .
The headlamps on warning chime is inoperative	Smart junction box (SJB)	Go to Pinpoint Test AK .
The chime sounds when the driver door is ajar (no key in the ignition and the headlamps are off)	Wiring, terminals or connectors Key-in-ignition switch (part of the ignition switch) Instrument cluster (IC)	Go to Pinpoint Test AL .
The performance shift warning chime does not operate correctly	Instrument cluster (IC) configuration Instrument cluster (IC)	Go to Pinpoint Test AM .
The safety belt warning chime is inoperative	Instrument cluster (IC)	Go to Pinpoint Test AN .
The Belt-Minder® feature does not operate correctly	Belt-Minder® deactivated Instrument cluster (IC)	Go to Pinpoint Test AN .
The air bag warning chime does not operate correctly	Instrument cluster (IC)	CHECK the operation of the safety belt and air bag warning indicators. If the safety belt and air bag warning indicators do not operate correctly, go to Pinpoint Test P (safety belt warning indicator) or Go to Pinpoint Test O (air bag warning indicator). If the safety belt and air bag warning indicators operate correctly, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The message center switch tone is inoperative	Instrument cluster (IC)	CHECK the operation of the message center switch. If the message center switch do not operate correctly, go to Pinpoint Test AH . If the message center switch operate correctly, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.