Instrument cluster not showing odometer and speedometer and makes water temperature go straight to hot, fuel gauge stays on empty although its not empty and water is not empty in radiator and is not hot. Warning lights below dash show, oil, fuel gauge, fanbelt gauge, and also seatbelts warning lights stay on also. But nothing is wrong with the car. Its a high density Digital instrument cluster dashboard for a ea Ford Fairmont 1989 sedan.

1. Faulty Instrument Cluster: The instrument cluster itself may be defective or damaged. Over time, electronic components can degrade, leading to malfunctions.
2. Fuse: Check the fuse box for any blown fuses related to the instrument cluster. A blown fuse could disrupt power to the cluster, causing all the gauges to fail simultaneously.
3. Faulty Wiring: There could be a problem with the wiring harness or connectors that supply power and data to the instrument cluster. Loose connections or damaged wires can prevent the cluster from receiving the necessary signals.
4. Vehicle Speed Sensor: The vehicle speed sensor (VSS) is responsible for providing speed data to the instrument cluster. If the VSS malfunctions, it can cause the speedometer to stop working, and it may affect other gauges as well.
5. Engine Control Module (ECM): The ECM communicates with the instrument cluster to provide data for various gauges. A malfunctioning ECM could disrupt communication and cause all the gauges to fail.
6. Grounding Issues: Poor grounding can lead to electrical problems, including instrument cluster malfunctions. Ensure that all ground connections related to the instrument cluster are clean and secure.

Given the complexity of diagnosing electrical issues, it's advisable to have a qualified mechanic or automotive technician inspect your vehicle. They can use diagnostic tools to pinpoint the exact cause of the problem and recommend the necessary repairs. Additionally, if the issue is related to the instrument cluster itself, it may need to be repaired or replaced by a professional.

The instrument cluster receives the vehicle speed sensor (VSS) signal which originates in the ABS module and is transmitted to the PCM over the communication network. The PCM monitors the VSS input and sends it to the instrument cluster over the communication network. With the VSS input, the instrument cluster provides the speedometer with a corresponding pointer movement.

• The speedometer/odometer is inoperative

• Powertrain control module (PCM)
• Instrument cluster

• Go To Pinpoint Test F .

Pinpoint Test F: The Speedometer/Odometer Is Inoperative
Normal Operation Vehicle speed information is sent to the powertrain control module (PCM) from the anti-lock brake system (ABS) module. The instrument cluster receives the vehicle speed data from the PCM over the communication network.

Possible Causes
• PCM
• instrument cluster

PINPOINT TEST F: THE SPEEDOMETER/ODOMETER IS INOPERATIVE Your best bet ,have the vehicle hooked to a professional scan tool an checked for DTC'S - diagnostic trouble code's , before you replace parts that are not needed.
Test Step Result / Action to Take F1 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCs) FROM BOTH THE CONTINUOUS AND ON-DEMAND PCM SELF-TESTS

• Check for the recorded PCM DTCs from the continuous and on-demand self-tests.
• Are any PCM DTCs recorded?

Yes
REFER to the Powertrain Control/Emissions Diagnosis (PC/ED) manual to continue diagnosis of the DTCs.

No
For an inoperative speedometer, GO to F2 .

For an inoperative odometer, GO to F3 . F2 CARRY OUT THE INSTRUMENT CLUSTER SPEEDOMETER GAUGE ACTIVE COMMAND USING THE DIAGNOSTIC TOOL

• Key in ON position.
• Enter the following diagnostic mode on the diagnostic tool: Instrument Cluster Active Command.
• Select the instrument cluster speedometer gauge active command. Trigger the active command on. Observe the speedometer gauge. The speedometer gauge should start 16 km/h (10 mph) and move to 194 km/h (120 mph).
• Is the speedometer gauge within specifications?

Yes
GO to F4 .

No
GO to F5 . F3 MONITOR THE INTEGRATED CIRCUIT DISPLAYS

• Key in ON position.
• Monitor the compass, air temperature and message center functions of the integrated circuit display.
• Do the compass, air temperature, or message center displays operate correctly?

Yes
GO to F5 .

No
Go To Pinpoint Test U to continue diagnosis of the integrated circuit display. F4 CHECK FOR CORRECT PCM OPERATION

• Disconnect all the PCM connectors.
• Check for:
  • corrosion
  • pushed-out pins
• Connect all the PCM connectors and make sure they seat correctly.
• Operate the system and verify the concern is still present.
• Is the concern still present?

Yes
INSTALL a new PCM. REFER to Section 303-14 . TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. F5 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION

• Disconnect all the instrument cluster connectors.
• Check for:
  • corrosion
  • pushed-out pins
• Connect all the instrument cluster connectors and make sure they seat correctly.
• Operate the system and verify the concern is still present.
• Is the concern still present?

Yes
INSTALL a new instrument cluster. REFER to Instrument Cluster in this section. TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

http://www.bbbind.com/free-tsb Enter vehicle info. year , make , model an engine size . Under system click on body & accessories ,then under subsystem click on instrumentation , Click the search button then the blue link.
Don't know what problem you are having , could help you out if you listed problem . The instrument cluster is a electronic module ,has a microprocessor inside . The gauges display info. come's to the instrument cluster via class 2 serial data network from the PCM/ECM - engine computer . Factory or professional scan tool can communicate with the instrument cluster , view data , read DTC'S - diagnostic trouble code's . If you don't know this , your best bet , take it to a qualified repair shop.
You won't find wires for fuel sending unit , this info. is sent to the PCM/ECM an sent over single wire class 2 data bus.

Engine Coolant Temperature Gauge
The Power Control Module (PCM) broadcasts the coolant temperature value via the class 2 serial data line. The instrument cluster compares the temperature data using a 16 point look-up table in order to determine the needle deflection. A smooth filter is used in order to secure a continuous response. The instrument cluster drives the temperature gauge to C (cold) under the following conditions:
• The temperature data is lost.
• The PCM is in a state of health fault.

Fuel Gauge
The Powertrain Control Module (PCM) broadcasts the fuel level data via the class 2 serial data line. The instrument cluster compares the fuel data using a 16 point look-up table in order to determine the needle deflection. A smooth filter is used in order to secure a continuous response. The instrument cluster may determine if a low fuel condition is present. In the event of a low fuel condition, the following conditions may occur:
• The instrument cluster shall activate the LOW FUEL indicator.
• Send a chime message to the Body Control Module (BCM).
The instrument cluster may drive the fuel gauge to E (empty) under the following conditions:
• The fuel level data is lost.
• The PCM is in a state of health fault.

Speedometer and Odometer
The Vehicle Speed Sensor (VSS) is a gear-driven permanent magnet generator housed in the transaxle. The sensor generates a sine wave output with a frequency proportional to the vehicle speed. The Powertrain Control Module (PCM) uses this information to generate a vehicle speed signal that is sent through the class 2 serial data link; the instrument cluster then is able to utilize this data for the operation of:
• The speedometer
• The odometer


Data Link Communications Operation
Class 2 Serial Data Link
The Class 2 serial data link is used so the following modules can communicate data with each other:
• The Body Control Module (BCM)
• The Electronic Brake Control Module (EBCM)
• The Inflatable Restraint Sensing and Diagnostic Module (SDM)
• The Instrument Panel Cluster
• The Powertrain Control Module (PCM)
• The Heater-A/C Control

Odometer The instrument cluster receives odometer rolling count status from the PCM-engine computer and stores the mileage in non-volatile memory (NVM). When the instrument cluster fails to receive the odometer rolling count status for more than two seconds, the odometer display will show dashes.

HEC Dealer Test Mode
To enter the HEC Dealer Test Mode, depress and hold the instrument cluster SELECT/RESET button and then turn the ignition switch to the RUN position. Continue pressing the SELECT/RESET button (5 seconds) until tESt is displayed in the odometer. The SELECT/RESET button must be released within 3 seconds of the odometer displaying tESt to begin the dealer test mode. Depress the SELECT/RESET button to advance through the following steps until dtc is displayed. Depressing the SELECT/RESET button will display any continuous DTCs stored before proceeding to the next step.

All segments illuminated Illuminates all odometer segments. If any odometer segment is inoperative, INSTALL a new instrument cluster; REFER to Instrument Cluster .
Odometer Display Description GAGE Activates gauge sweep of all gauges, then displays present gauge values. Also carries out the checksum tests on ROM and EE. If the gauge sweep is inoperative, INSTALL a new instrument cluster; REFER to Instrument Cluster . All segments illuminated Illuminates all odometer segments. If any odometer segment is inoperative, INSTALL a new instrument cluster; REFER to Instrument Cluster . bulb Illuminates all micro-controlled lamps and LEDs (low oil pressure/high coolant temperature, low fuel, service engine soon, brake, low range). INSTALL a new bulb or LED as necessary. r Returns to normal operation of all micro-controlled lamps and LEDs and displays hexadecimal value for ROM level (used when requesting assistance from the hotline). If alternating flashes of FAIL and ROM level are displayed, INSTALL a new instrument cluster; refer to Instrument Cluster . EE Displays hexadecimal value for EE level (used when requesting assistance from the hotline). If alternating flashes of FAIL and EE level are displayed, INSTALL a new instrument cluster; refer to Instrument Cluster . dt Displays hexadecimal coding of final manufacturing test date (used when requesting assistance from the hotline). dtc Displays continuous DTCs. Pressing the SELECT/RESET button will display any DTCs stored before proceeding to the next step. enG Displays the English speed in mph. Speedometer will indicate present speed within tolerances. Display will show 0 if input is not received, if input received is invalid for one second or more, or if speed is 0. m Displays the English speed data (mph) received from the PCM via SCP Network. Displays the metric speed in kph. Speedometer will indicate present speed within tolerances. Display will show 0 if input is not received, if input received is invalid for one second or more, or if speed is 0. tAc Displays the tachometer data received from the PCM via the SCP Network. Tachometer will indicate present speed within tolerances. Display will show 0 if input is not received, if input received is invalid for one second or more, or if engine rpm is 0. FUEL Displays the actual A/D fuel level. The fuel gauge will display a filtered fuel level value. This filter will keep the pointer from moving suddenly or erratically. If the value displayed is between 0 and 20, the circuit is shorted. GO to Pinpoint Test D .

• 255=open send +/-0
• 232=Full stop +/-10
• 215=Full mark +/-10
• 178=3/4 mark +/-8
• 138=1/2 mark +/-7
• 93=1/4 mark +/-5
• 41=E mark +/-4
• 54="LOW FUEL" (0-59)
• 0-18=short (0-20 max.)

OIL Displays the code (0-255) for the oil pressure switch input to the HEC. Displays the oil pressure reading input to the HEC. Oil pressure gauge will indicate present oil pressure. Normal oil pressure (greater than 6 psi) will display a value between 000 and 176. A low oil pressure (less than 6 psi) or an inoperative engine oil pressure switch will display a value greater than 176. dEGC Display of engine temperature in Degrees C input from cylinder head temperature sensor. If the value displayed is -40C, the SCP message for engine temperature has not been received for more than 5 seconds. GO to Pinpoint Test E .

• 49 C="C" mark.
• 60 C=Normal band start.
• 120 C=Normal band end.
• 119 C=Temperature warning indicator ON.
• "-40" C=No SCP Message for 5 sec.

br Displays the brake fluid level input to the HEC. bAtt Displays the code (0-255) battery voltage input to the HEC. Battery voltage gauge will indicate present battery voltage.

• 93-102=6.9-9.1 volts (Low voltage)
• 115-124=8.5-10.7 volts (Norm band start)
• 215-225=15.8-18 volts (Norm band end)
• 230-241=16.9-19.1 volts (High voltage)

rhEo Displays the present hexadecimal value for the instrument cluster backlighting pulse width modulated (PWM) input to the HEC (used when requesting assistance from the hotline). rhi
rhS
rho PWM input duty cycle.
SCP hexadecimal dimming step (used when requesting assistance from the hotline).
Output driver counts in hexadecimal format (used when requesting assistance from the hotline). Cr Displays the present RUN/START sense input. Display will show -h with the ignition switch in the START position and -L with the ignition switch in the RUN position. ALtF Displays 8-bit hexadecimal value for alternate fuel level. Display will show a value between 00 and FF if the message is received. PA-PE7 Not used. GAGE Repeats test display cycle.
Turn the ignition switch to the OFF position or press and hold the SELECT/RESET button for 3 or more seconds and release to exit HEC Dealer Test Mode. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics.

The "cluster" means all of the things you see under the plastic cover in front of the driver, the 'gauges'. The term is a reference to the 'instrument cluster' including speedometer, tachometer, fuel gauge, idiot lights, temperature gauge, everything.
Get a second independent opinion since this is very unusual. Most likely you have a blown fuse.

Faulty instrument cluster. GM has had many problems with their instrument clusters and this is one of them.There has been a recall untold,that if your vehicle is not over 7 years old and have less than 70,000 miles on it they will replace it at no charge.GOOD LUCK!! P.S. if they won't cover it then you can get one at www.Dorman.com .

Hi, this is a pretty common problem on these Silverado instrument clusters. We can repair it for you or provide you with the parts to do it yourself. Click here to learn more about these silverado instrument cluster problems: Dr Speedometer Instrument Cluster Repair Speedometer Repair Guage...

Common problem on the 05 Mustang instrument clusters, it's caused by failing stepper motors on the cluster's circuit board and it can be repaired. Check out this page for more on how to get it fixed - 05 Mustang speedometer problems

My gas guage, speed odometer and tempiture does not work
The speed odometre is reading 9999999 what should i do

Section 13-01: Instrument Cluster—Conventional 1995 Thunderbird, Cougar Workshop Manual REMOVAL AND INSTALLATION Instrument Cluster Removal and Installation

1. Disconnect battery ground cable (14301) .

1. Remove screws holding instrument panel reinforcement (017A28) .

1. Remove screws holding instrument panel lower shield (045G02) .

1. Remove fasteners holding steering wheel column as outlined in Section 11-04 . Gently lower steering column.

1. Remove fasteners holding the instrument panel finish panel (044D70) and gently pry off.
   
   
   
   

1. Remove four instrument cluster retaining screws. (Do not remove screws from the instrument cluster main lens (10887) and instrument cluster mask (10890) ).

1. Slide the instrument cluster (10849) to the right of the instrument panel opening and unhook the instrument panel harness from the back of the instrument cluster .

1. Remove the instrument cluster from the instrument panel (04320) .

-----------------------
Speedometer/Odometer Federal law requires that the odometer in any replacement speedometer (17255) must register the same mileage as that registered in the removed speedometer . Since the speedometer mileage cannot be reset on this unit, affix odometer sticker to driver's door pillar and record original vehicle mileage. Removal

1. Disconnect battery ground cable (14301) .

1. Remove the instrument cluster (10849) as outlined.

1. Remove seven screws retaining the instrument cluster mask (10890) and instrument cluster main lens (10887) .

1. Remove speedometer assembly.

Installation

1. Position the speedometer assembly to the instrument cluster back plate (10848) and install.

1. Position the instrument cluster mask and instrument cluster main lens to the instrument cluster back plate and install the seven retaining screws.

1. Install the instrument cluster as outlined.

1. Connect battery ground cable and check the operation of the speedometer .

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