No procedure B, since you have a 2002:
PROCEDURE C (2002-2006 MY With No DTCs)
NOTE TO BEGIN DIAGNOSTIC PROCEDURE, SUBJECT VEHICLE MUST HAVE BETWEEN 1/4 AND 3/4 TANK OF FUEL.
1. Engage the Instrument Cluster Self-Diagnostic Test Mode by pressing and holding the appropriate buttons for 4 seconds:
^ 2002-2006 - Base Cluster - Trip Odo Reset button
^ 2002-2005 - Message Center Cluster - SETUP and RESET Message Center buttons
^ 2006 - Message Center Cluster - RESET (only) Message Center button
a. With the vehicle in park, turn the key to the run position key on/engine off (KOEO).
b. Release the button(s):
^ 2002-2005 - Base Clusters will display "tESt"
^ 2002-2005 - Message Center Clusters will display "TEST"
^ 2006 - Clusters will indicate "ENGINEERING TEST MODE"
NOTE IF "ENGINEERING TEST MODE" IS NOT DISPLAYED, DEPRESS THE ODO RESET OR MESSAGE CENTER RESET BUTTON 1 OR MORE TIMES UNTIL THIS MESSAGE IS DISPLAYED.
2. Access Raw Fuel Level data also called the Unfiltered Value by pressing:
^ 2002-2005 - Base Clusters - Trip Odo reset button 15 - 20 times for - until the display shows a "F" followed by a 3-digit value (000 to 254)
^ 2002-2005 - Message Center Clusters - Message Center Reset button 18 times until the display shows "FUEL A/D" or "FUEL LEVEL A/D"
^ 2006 Clusters - Trip Odo reset button 14 times until the display shows "FUEL LEVEL XXX INST" where XXX is a value between 000 and 254
3. Rock the vehicle front to back (not side to side) at a slow and steady rate while noting the value on the display
NOTE THE UNFILTERED VALUE SHOULD CHANGE SMOOTHLY ALONG WITH THE FUEL SLOSH.
a. If this unfiltered value exceeds 231 at any point during this test, there is an open circuit in the sender and/or wiring. Refer to Diagnostic Procedure A for 2002-2005 Model Years and Diagnostic Procedure B for 2006 Model Year.
b. If the Unfiltered value drops below 28 at any point during the test, there is a shorted circuit in the sender and/or wiring. Repair as necessary.
c. If the Unfiltered value stays between 028 - 231 during the test, the concern is intermittent. Refer to the appropriate shop manual and follow normal diagnostics.
Tips For Procedure C And Optional Diagnostics:
^ If F is increasing and FP isn't - go to Cluster Diagnostic Section of Shop Manual
^ If FP and F are increasing and fuel level isn't - go to Cluster Diagnostic Section of Workshop Manual
^ If Last line (Open) values aren't 255 and 254 (MY 05 and before), or 255 (MY 06) - go to Cluster Diagnostic Section of Workshop Manual
^ If Open, or if F does not represent the level of fuel as described - then go to the Workshop Manual and look for wiring and fuel sender issues. The cluster is not at fault
Optional Diagnostics
NOTE THE FILTERED VALUE CAN ALSO BE DISPLAYED TO AID IN DIAGNOSIS. THE FILTERED VALUE DIRECTLY RELATES TO THE POSITION OF THE FUEL GAGE POINTER.
^ 2005 - Message Center Clusters will indicate "PER XXX" on the second line of the Message Center
^ 2003-2004 & 2006 - Clusters, the Trip Reset or Message Center Reset Button must be depressed one additional time to display "FUEL LVL % XXX", "PER XXX", "FUEL STAT XXX %" or "FP XXX". (XXX is a 3-digit value that ranges from 0 to 254) this is the filtered value. Wait 90 seconds and note the position of the fuel gauge pointer, and the value on the Cluster Display. (Refer to the appropriate Figure below)
2002-2005 Units Built After 3/4/2002 - Non Flex Fuel Engine Equipped Vehicles (Figure 3)
2002-2005 Units Built After 3/4/2002 - 4.0L Flex Fuel Engine Equipped Vehicles (Figure 4)
NOTE VALUE IN REFERENCE CHARTS ARE NOMINAL TEST VALUES. (EX. A FULL FUEL TANK FILL SHOULD INDICATE FULL, AND THE DISPLAY SHOULD INDICATE A VALUE BETWEEN 242 AND 254)
