Symptom Charts

Symptom Chart - Instrument Cluster

Condition	Possible Sources	Action
No communication with the instrument cluster (IC)	Fuse Wiring, terminals or connectors Instrument cluster (IC)	REFER to MODULE COMMUNICATIONS NETWORK article.
The instrument cluster (IC) is inoperative	Fuse Wiring, terminals or connectors Instrument cluster (IC)	Go to Pinpoint Test A .
Incorrect fuel gauge indication	Wiring, terminals or connectors Fuel level sensor Fuel pump module assembly Fuel tank Instrument cluster (IC)	Go to Pinpoint Test B .
The temperature gauge is inoperative	PCM Instrument cluster (IC)	Go to Pinpoint Test C .
Incorrect temperature gauge indication	Engine coolant temperature (ECT) sensor (4.0L) Cylinder head temperature (CHT) sensor (4.6L) PCM concern Instrument cluster (IC)	Go to Pinpoint Test D .
The tachometer is inoperative	PCM Instrument cluster (IC)	Go to Pinpoint Test E .
Incorrect tachometer indication	PCM Instrument cluster (IC)	Go to Pinpoint Test F .
The speedometer/odometer is inoperative	PCM Instrument cluster (IC)	Go to Pinpoint Test G .
Incorrect speedometer indication	Tire size configuration Axle ratio configuration PCM Instrument cluster (IC)	Go to Pinpoint Test H .
The brake warning indicator is never on	Wiring, terminals or connectors Parking brake switch Brake fluid level switch (part of the master cylinder) Smart junction box (SJB) ABS module Instrument cluster (IC)	Go to Pinpoint Test I .
The brake warning indicator is always on	Wiring, terminals or connectors Parking brake switch Brake fluid level switch (part of the master cylinder) SJB ABS module Instrument cluster (IC)	Go to Pinpoint Test J .
The ABS warning indicator is never/always on	ABS module Instrument cluster (IC)	Go to Pinpoint Test K .
The safety belt warning indicator is never/always on	Restraints control module (RCM) Instrument cluster (IC)	Go to Pinpoint Test L .
The LH/RH turn or high beam indicator is never/always on	Exterior lighting concern SJB Instrument cluster (IC)	Go to Pinpoint Test M .
The low oil pressure warning indicator is never/always on	Wiring, terminals or connectors Base engine concern Engine oil pressure switch Instrument cluster (IC)	Go to Pinpoint Test N .
The malfunction indicator lamp (MIL) indicator is never/always on	PCM Instrument cluster (IC)	Go to Pinpoint Test O .
The air bag warning indicator is never/always on	RCM Instrument cluster (IC)	Go to Pinpoint Test P .
The speed control indicator is never/always on	Speed control system concern PCM Instrument cluster (IC)	Go to Pinpoint Test Q .
The powertrain malfunction (wrench) warning indicator is never/always on (base instrument cluster [IC])	Four-wheel drive (4WD) system concern Instrument cluster (IC)	Go to Pinpoint Test R .
The door ajar indicator is never/always on	SJB Instrument cluster (IC)	Go to Pinpoint Test S .
The O/D OFF indicator is never/always on	TCM (4.6L engine) PCM (4.0L engine) Instrument cluster (IC)	Go to Pinpoint Test T .
The tire pressure monitoring system (TPMS) warning indicator is never/always on	TPMS concern SJB Instrument cluster (IC)	Go to Pinpoint Test U .
The 4x4 high indicator is never/always on	4WD system concern 4X4 control module Instrument cluster (IC)	Go to Pinpoint Test V .
The 4x4 low indicator is never/always on	4WD system concern 4X4 control module Instrument cluster (IC)	Go to Pinpoint Test W .
The engine coolant over temperature warning indicator is never/always on (base instrument cluster [IC])	PCM Instrument cluster (IC)	Go to Pinpoint Test X .
The traction control/stability assist indicator is never/always on	Traction control/stability assist system concern ABS module Instrument cluster (IC)	Go to Pinpoint Test Y .
The charging system warning indicator is never/always on (base instrument cluster [IC])	Charging system concern PCM Instrument cluster (IC)	Go to Pinpoint Test Z .
The check fuel cap indicator is never/always on (Sport Trac base cluster only)	PCM Instrument cluster (IC)	Go to Pinpoint Test AA .

Symptom Chart - Information And Message Center

Condition	Possible Sources	Action
The message center display is blank	Instrument cluster (IC)	INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
Not all segments of the display illuminate	Instrument cluster (IC)	INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The message center is not operating correctly (base instrument cluster [IC])	Instrument cluster (IC)	OBSERVE the operation of the message center when pressing the SELECT/RESET button. Does the message center display change when the SELECT/RESET button is pressed? If the message center display changes, the system is operating normally at this time. If the message center display does not change, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The message center is not operating correctly (high series instrument cluster [IC])	Message center switch concern Instrument cluster (IC)	Go to Pinpoint Test AD .
The compass is inoperative	Fuse Wiring, terminals or connectors Compass sensor module	Go to Pinpoint Test AE .
The compass is inaccurate	Zone setting Calibration Vehicle magnetization Compass sensor module	Go to Pinpoint Test AF .
The message center display is blank	Instrument cluster (IC)	CARRY OUT the instrument cluster (IC) self-diagnostic test mode to illuminate all segments of the message center display. REFER to 3. If the message center display is illuminated, the system is working correctly at this time. If the message center display is inoperative, 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 (base instrument cluster [IC])	Instrument cluster (IC)	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 (high series instrument cluster [IC])	Wiring, terminals or connectors Message center switch Instrument cluster (IC)	Go to Pinpoint Test AG .
The outside air temperature display does not operate correctly	Wiring, terminals or connectors Ambient air temperature sensor Instrument cluster (IC)	Go to Pinpoint Test AH .
The WASHER FLUID LOW LEVEL message is inoperative	Wiring, terminals or connectors Washer fluid level switch (part of the windshield washer reservoir) Instrument cluster (IC)	Go to Pinpoint Test AI .
The DOOR/LIFTGATE/LIFTGATE GLASS AJAR warning is inoperative	Door ajar warning indication system Instrument cluster (IC)	OBSERVE the operation of the door ajar warning indicator. If the door ajar warning indicator does not operate correctly, go to Pinpoint Test S . If the door ajar warning indicator operates correctly, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The CLEAR OBJECTS BY PASS SEAT warning is inoperative	RCM Instrument cluster (IC)	OBSERVE the operation of the air bag warning indicator. If the air bag warning indicator does not operate correctly, go to Pinpoint Test P . If the air bag warning indicator operates 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	Charging system Instrument cluster (IC)	Go to Pinpoint Test AJ .
The FUEL LEVEL LOW warning is inoperative	Fuel gauge indication Instrument cluster (IC)	OBSERVE the operation of the fuel gauge. 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 PARK BRAKE ENGAGED warning is inoperative	Brake warning indication system Instrument cluster (IC)	OBSERVE the BRAKE warning indicator. If the BRAKE warning indicator does not operate correctly, go to Pinpoint Test I . 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 CHECK BRAKE SYSTEM warning is inoperative	Brake warning indication system Instrument cluster (IC)	OBSERVE the BRAKE warning indicator. If the BRAKE warning indicator does not operate correctly, go to Pinpoint Test I . 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 BRAKE FLUID LEVEL LOW warning is inoperative	Brake warning indication system Base brake system	OBSERVE the BRAKE warning indicator. If the BRAKE warning indicator does not operate correctly, go to Pinpoint Test I . 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 CHECK PARK AID message is inoperative (if equipped)	Parking aid system Instrument cluster (IC)	OPERATE the parking aid system. If the parking aid system does not operate correctly, REFER to PARKING AID article. If the parking aid system operates correctly, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The LOW TIRE PRESSURE, TIRE MONITOR FAULT, or TIRE SENSOR FAULT warning is inoperative	Tire pressure monitoring system (TPMS) warning indication system Instrument cluster (IC)	OBSERVE the operation of the TPMS warning indicator. If the TPMS warning indicator does not operate correctly, go to Pinpoint Test U . If the TPMS warning indicator operates correctly, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The CHECK HEADLAMP, CHECK HIGHBEAM, or CHECK TURN LAMP message is inoperative	Exterior lighting SJB Instrument cluster (IC)	OBSERVE the exterior lighting system for correct operation. If the exterior lighting does not operate correctly, REFER to EXTERIOR LIGHTING article. If the exterior lighting operates correctly, INSTALL a new smart junction box (SJB). REFER to MULTIFUNCTION ELECTRONIC MODULES article. TEST the system for normal operation.
The 4X4 LOW STOP VEHICLE, 4X4 LOW SHIFT TO N, TO EXIT 4X4 LOW STOP VEHICLE or TO EXIT 4X4 LOW SHIFT TO N message is inoperative	4WD system Instrument cluster (IC)	VERIFY that the 4X4 high and 4X4 low indicators operate correctly. If the 4X4 high and 4X4 low indicators do not operate correctly, go to Pinpoint Test V (4x4 high) or Go to Pinpoint Test W (4x4 low). If the 4X4 high and 4X4 low indicators operate 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
No communication with the instrument cluster (IC)	Fuse(s) Wiring, terminals or connectors Instrument cluster (IC)	REFER to MODULE COMMUNICATIONS NETWORK article.
The key-in-ignition warning chime is inoperative	Wiring, terminals or connectors Key-in-ignition warning switch (part of the ignition switch) Instrument cluster (IC)	Go to Pinpoint Test AK .
The headlamps on warning chime is inoperative	Instrument cluster (IC)	Go to Pinpoint Test AL .
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 turn signal on warning chime is inoperative	Turn signal indication concern Odometer rolling count input Instrument cluster (IC)	Go to Pinpoint Test AM .
The door ajar warning chime is inoperative	Instrument cluster (IC)	VERIFY the door ajar warning indicator operates correctly. If the door ajar warning indicator does not operate correctly, go to Pinpoint Test S If the door ajar warning indicator operates correctly, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The chime sounds when the driver door is ajar (no key in ignition and headlamps off)	Wiring, terminals or connectors Key-in-ignition warning switch (part of the ignition switch) Instrument cluster (IC)	Go to Pinpoint Test AN .
The safety belt warning chime does not operate correctly	RCM Instrument cluster (IC)	Go to Pinpoint Test AO .
The Belt-Minder® feature does not operate correctly	Belt-Minder® deactivated RCM Instrument cluster (IC)	Go to Pinpoint Test AP .
The parking brake warning chime is inoperative	Brake warning indication Vehicle speed input Instrument cluster (IC)	Go to Pinpoint Test AQ .
The air bag secondary warning chime is inoperative	Instrument cluster (IC)	RETRIEVE the recorded instrument cluster (IC) DTCs from the continuous and on-demand self-tests. If the instrument cluster (IC) DTC B1868 or B1915 is not present, the system is operating correctly. The air bag secondary warning chime sounds only when a fault in the air bag warning indicator is present and DTC B1868 or B1915 is recorded. If the instrument cluster (IC) DTC B1868 or B1915 is present, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
The message center warning chime is inoperative	Instrument cluster (IC)	NOTE: The message center warning chime only sounds to alert the driver of concerns with the TPMS, door ajar or low fuel. VERIFY that the door ajar chime sounds when the door is first opened and that as new warning messages display, the warning chime sounds. If the door ajar chime sounds when the door is first opened or when new warning messages display, the system is operating correctly at this time. The message center warning chime only sounds when the message center detects new warning messages. If the door ajar chime does not sound when the door is first opened and when new warning messages display, INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.