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Some 2005-2007 F-Super Duty vehicles may exhibit a speedometer and/or tachometer indicator issue. Symptoms may include intermittent, large inaccuracies, or jumping/bouncing/erratic pointers. ACTION Refer to the Service Procedure. SERVICE PROCEDURE 1. Verify there are no diagnostic trouble codes (DTCs). If there are DTCs present, follow the appropriate procedure in the Workshop Manual to clear the DTC and resolve the concern. 2. Confirm that the axle ratio and tire size are properly configured in the ABS module. 3. For a speedometer related concern, If no DTCs are present, the issue may be with any of the following components: • Cluster • ABS Module • ABS Speed Sensor • Vehicle Wiring • If the symptom is a continuous (non-intermittent) large inaccuracy, ensure that the axle ratio and tire size are properly configured in the ABS module. To identify the cluster as the root cause: 1. Monitor the vehicle speed sensor (VSS) PID in the powertrain control module (PCM), and the speedometer needle position while stopped. 2. If the speedometer displays 5 MPH (8 Km/h) or more, and the VSS PID indicates zero, replace the instrument cluster. 3. With an assistant observing the diagnostic tool, drive the vehicle at 20, 40, and 60 MPH (32, 64, and 97 Km/h) as indicated on the diagnostic tool, and record the value indicated by the speedometer. 4. If the speed indicated on the diagnostic tool versus speedometer readings vary by more than ± 5 MPH, (8 Km/h) replace the instrument cluster. ABS Module Concern To identify if the ABS Module is the root cause, refer to diagnostic procedures in the Workshop Manual. For any customer complaints of jumping/bouncing/erratic speedometers, a wiring concern may exist which is severe enough to interrupt the signal, but not severe enough to totally open/short the circuit.

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TROUBLE SHOOTING FUEL/TEMPERATURE GAUGE NOT WORKING Check for blown fuse, faulty voltage limiter and faulty relay. Ensure sending unit connections are clean and tight. Test sending unit for correct operation. Tighten connections in instrument cluster. SPEEDOMETER NOT WORKING Ensure speedometer cable is properly connected and correctly routed. If speedometer pointer and/or odometer still do not work, replace speedometer as an assembly. TACHOMETER NOT WORKING Tachometer is serviced as an assembly. If wiring harness is okay, replace tachometer assembly. WARNING LIGHTS NOT WORKING Test for defective sending unit, burned-out bulb and broken printed circuit. Ensure all connections are clean and tight. TESTING BOOST PRESSURE GAUGE NOTE: Boost pressure gauge testing procedures for Galant are not available from manufacturer.

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The beeper drive circuit The indicator drive circuit The LCD segments The gauges drive circuit (Speedometer, Tachometer, Fuel gauge, Coolant temperature gauge) The communication line (the coolant temperature signal and vehicle speed signal line between the gauge and the ECM/PCM) ENTERING SELF-DIAGNOSTIC FUNCTION NOTE: While in the self-diagnostic function, the dash lights brightness controller does not operate. While in the self-diagnostic function, the TRIP/RESET button is used to start the Beeper Drive Circuit Test and the Gauge Drive Circuit Check. If the vehicle speed exceeds 1.2 MPH (2 km/h) or the ignition switch is turned OFF, the self-diagnostic function ends. Before entering the self-diagnostic function, check the No. 9 (10A) fuse in the under-hood fuse/relay box and the No. 10 (7.5A) fuse in the under-dash fuse/relay box. 1. 2. 3. 4. 5. Press and hold the TRIP/RESET button. Turn the headlights ON. Turn the ignition switch ON (II). Within 5 sec., turn the headlights OFF, then ON and OFF again. Within the next 5 sec., release the TRIP/RESET button, then press and release the button three times.

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Malfunction Indicator Light (MIL) For most DTCs, the Check Engine Indicator (located in the lower portion of the tachometer) will illuminate when a fault is detected on the second drive cycle. See Fig. 1 . Only catalyst-damaging misfires, certain internal ECM failures and Controller Area Network (CAN) faults will illuminate the Check Engine Indicator when the fault is detected on the first drive cycle. In certain circumstances, the Message Center (located in the lower portion of the speedometer), will display fault warning information simultaneously with the Check Engine Indicator, or when a fault is detected on the first drive cycle. Also, in certain circumstances, the Amber or Red MIL (located above the Message Center) simultaneously with the Check Engine Indicator and Message center indicating the priority of the fault. Red MIL indicates a primary warning, loss of power and driveability. Do not drive vehicle. Amber MIL indicates a secondary warning, loss of power and driveability. Vehicle may still be driven.

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Tachometer is erratic and it seems to miss under a light load while driving. Has codes P0320. P0300, P0301, P0302, P0303, and P0304. Cleared the codes and P0320 returned. Tests/Procedures: Potential Causes: 1. Check for battery voltage at idle to the ignition failure sensor at terminal 4, Pink/Black wire. 2. Check for battery voltage from the ignition failure sensor to the coils at idle from terminal 3, Tan/Black wire. 3. Bypass the ignition failure sensor by jumping from terminal 4 to terminal 3 and test drive the vehicle to see if the miss still occurs. 4. Scope the signal at the ignition failure sensor at terminal 2, White wire that goes to the instrument cluster for the tach signal. Ignition Failure Sensor