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Need 02 Explorer Fuel Sender ckt Wiring diagram

Discussion in 'Stock 2002 - 2005 Explorers' started by Kentski, February 22, 2007.


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    1. Kentski

      Kentski New Member

      Joined:
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      City, State:
      Ann Arbor, Michigan
      Year, Model & Trim Level:
      2002 XLT
      :usa: I am looking for a Fuel sender/Module/Gage wiring diagram for a 4.0L Explorer. Chilton helped some...shows the Fuel Sender wired to the Instrument Cluster module, but doesn't show how the Fuel Gage is connected to it all.

      I am getting a "Check Gage" light intermittently after start up and the Fuel Gage goes to zero. It usually clears on a second Key up. I monitered the Fuel Level Indicator PID through the PCM and it goes to 100% when this happens. I suspect a bad ground or sending unit, but would like to verify the source with voltage measurements.

      Thanks
      Kent
       
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    3. ffdemoss

      ffdemoss Member

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      City, State:
      Little Rock, AR
      Year, Model & Trim Level:
      2005 XLT
      TSB
      06-2-12 MIL ON WITH PCM DTC P0463 AND/OR IC DTC B1201 - FUEL GAUGE DROPS TO EMPTY OR
      SLOW TO UPDATE AFTER REFUELING
      Publication Date: January 20, 2006
      FORD: 2002-2006 Explorer
      LINCOLN: 2003-2005 Aviator
      MERCURY: 2002-2006 Mountaineer
      This article supersedes TSB 05-21-3 to update the Service Procedure.
      ISSUE:
      Some 2002-2006 Explorer/Mountaineer and 2003-2005 Aviator vehicles may exhibit a customer
      complaint of the fuel gauge being slow to read full after refueling, the malfunction indicator lamp (MIL)
      on with diagnostic trouble code (DTC) P0463, instrument cluster DTC B1201, and/or the fuel gauge
      dropping to empty. This may be due to the fuel level sender assembly sending incorrect data to the
      instrument cluster and/or powertrain control module (PCM).
      ACTION:
      Refer to the following General Information for a description of two (2) modes of fuel gauge operation
      prior to following the TSB Service Procedure. This brief explanation of current fuel gauge strategy will
      help ensure the correct diagnosis is made. The fuel gauge on these vehicles has several distinct modes
      of operation. The difference in the various modes is the speed at which the fuel gauge pointer moves
      in relationship to fuel level input from the fuel level sender. After reviewing the General Information,
      refer to the TSB Service Procedure.
      GENERAL INFORMATION
      Fuel gauge strategy provides several modes of operation. One being referred to as Fast Acquire Mode
      and another as Slosh Mode. The time for the fuel gauge pointer to move from "E" to "F" can be 2
      seconds, 17 minutes or 55 minutes depending on build date and which mode the fuel gauge is in.
      Fast Acquire Mode:
      The 2-second "E" to "F" mode is referred to as Fast Acquire Mode. Fast Acquire Mode strategy requires
      two (2) conditions to be met before the fuel gauge indications can be updated. First, at least four (4)
      gallons of fuel must be added to the fuel tank. Second, the Instrument Cluster must acquire a valid
      Key-ON fuel sender reading within 1 second of the key being put in the Run position. The Key-ON
      sample reading is considered valid if the fuel sender reading is between 10 and 160 ohms. If both of
      these conditions are not met, the fuel gauge stays in Slosh mode. If the Cluster does not go into Fast
      Acquire Mode after a refueling event, the system will stay in Slosh Mode. This will result in a slow to
      Read Full event.
      Slosh Mode:
      The 55-minute "E" to "F" mode is referred to as Slosh Mode. In Slosh Mode, this is 55 accumulated
      minutes of the key in the Run position. Unless the conditions are met to put the fuel gauge into one of
      the other operating modes, the default is Slosh Mode. Example: If a customer operates their vehicle
      11 minutes per day, it will take 5 days to accumulate 55 minutes of run time. This means it will take 5
      days for the fuel gauge to go from "E" to "F".
      NOTE: SLOSH MODE STRATEGY WAS REDUCED FROM 55 MINUTES TO 17 MINUTES FOR VEHICLES
      BUILT AFTER 12/22/2004.
      NOTE: IT IS IMPORTANT TO THOROUGHLY UNDERSTAND THE CUSTOMER CONDITION BEING
      REPORTED.
      It is important to determine if the customer has a fuel gauge that slowly gets to full or has a fuel
      gauge that never gets to "F" (stuck) when the fuel tank is filled. If the fuel gauge slowly goes from "E"
      to "F" (in 55 minutes of key in the Run position or less), the problem is most likely not in the cluster.
      It is absolutely imperative that the appropriate pinpoint test(s), located in the Workshop Manual or
      this TSB, be completed for this customer complaint to determine root cause of the condition. Root
      causes may include but are not limited to: the Fuel Sender, Fuel Tank, Wiring, or Instrument Cluster
      SERVICE PROCEDURE - INITIAL STEPS (All Vehicles)
      Retrieve and record PCM and the instrument cluster (IC) DTCs, from continuous and on-demand self
      tests.
      If DTCs other than B1201 or P0463 are retrieved, follow normal Workshop Manual diagnostics, DO
      NOT CONTINUE WITH THIS TSB.
      If IC DTC B1201 and/or PCM DTC P0463 are retrieved, perform Procedure A for 2002-2005 Model
      Years and Procedure B for 2006 Model Years.
      If No DTCs are retrieved, go to Procedure C.
      PROCEDURE A (2002-2005 MY)
      CHECKING FUEL GAUGE OPERATION:
      NOTE: WHEN PERFORMING STEPS 4A-O, FUEL GAUGE SLOSH STRATEGY REQUIRES SPECIFIC KEY ON
      AND KEY OFF CYCLE TIMES. THESE TIMES MUST BE OBSERVED OR THE DIAGNOSTIC RESULTS WILL
      NOT BE ACCURATE.
      Key in OFF position.
      Remove Fuse F1.15 (15 amp) from the Battery Junction Box, wait 1 minute and reinstall fuse.
      NOTE: THIS IS DONE TO RESET THE CLUSTER FUEL GAUGE TIMERS. FAILURE TO COMPLETE THIS
      STEP MAY RESULT IN ERRONEOUS TEST RESULTS.
      Disconnect the in-line connector to the fuel pump module (C438 for 4.6L) or (C431 for 4.0L), located
      on the RH frame rail.
      On the vehicle harness side of the connector, connect one lead of an instrument gauge system tester
      (Rotunda # 014-R1063 or equivalent) to Circuit 1356 (LG/VT - Pin-8 in Connector C438 and C431)
      and the other lead to Circuit 1357 (LB/YE - Pin-5 in C438 for 4.6L or Pin-4 in C431for 4.0L) (Figure 1).
      Figure 1 - Article 06-2-12
      With the key in the RUN position, move the shift lever from PARK to DRIVE, wait 10 seconds and then
      back to PARK.
      Wait 30 seconds with the key in the RUN position and the shift lever in PARK.
      Turn key to the OFF position.
      Set the tester to 160 ohms.
      Turn key to the RUN position, move the shift lever from PARK to DRIVE, wait 10 seconds and then
      move the shift lever back to PARK.
      Wait 30 seconds with the key in the RUN position and the shift lever in PARK.
      Turn key to OFF position and wait 30 seconds.
      Set the tester to 15 ohms.
      Turn key to RUN position, move the shift lever from PARK to DRIVE, wait 10 seconds and then move
      the shift lever back to PARK.
      Wait 30 seconds with the key in the RUN Position and the shift lever in PARK.
      NOTE: THE FUEL GAUGE SHOULD READ "E" (EMPTY MARK) OR BELOW WHEN CARRYING OUT THIS
      TEST STEP.
      Turn key to OFF position and wait 30 seconds.
      Set the tester to 160 ohms.
      Turn key to ON position.
      NOTE: THE FUEL GAUGE SHOULD READ "F" (FULL) OR ABOVE WHEN CARRYING OUT THIS TEST STEP.
      Wait 1 minute for the gauge to respond.
      Turn key to OFF position. After completing Steps 4A-O, if the fuel gauge operates correctly replace the
      fuel sender only (9A299). If not, refer to the Workshop Manual, Section 413-01 and perform normal
      diagnostics.
      PROCEDURE B (2006 MY)
      NOTE: WHEN PERFORMING STEPS 4A-O, FUEL GAUGE SLOSH STRATEGY REQUIRES SPECIFIC KEY-ON
      AND KEY-OFF CYCLE TIMES. THESE TIMES MUST BE OBSERVED OR THE DIAGNOSTIC RESULTS WILL
      NOT BE ACCURATE.
      CHECKING FUEL GAUGE OPERATION:
      Key in OFF position.
      Remove Fuse F24 (10 amp) from the Smart Junction Box, wait 1 minute and reinstall fuse.
      NOTE: STEP 2 IS DONE TO RESET THE CLUSTER FUEL GAUGE TIMERS. FAILURE TO COMPLETE THIS
      STEP MAY RESULT IN ERRONEOUS TEST RESULTS.
      Disconnect: Fuel Pump Gauge Sender C433.
      Connect one lead of the instrument gauge system tester to the Fuel Pump Gauge Sender C433-8,
      Circuit VMC11 (YE/VT), harness side and the other lead to the Fuel Pump Gauge Sender C433-5,
      Circuit RMC32 (GN/BU), harness side. (Figure 2)
      Figure 2 - Article 06-2-12
      With the key in the RUN position, move the shift lever from PARK to DRIVE, wait 10 seconds and then
      back to PARK.
      Wait 30 seconds with the key in the RUN position and the shift lever in PARK.
      Turn key to the OFF position.
      Set the tester to 180 ohms.
      Turn key to the RUN position, move the shift lever from PARK to DRIVE, wait 10 seconds and then
      move the shift lever back to PARK.
      Wait 30 seconds with the key in the RUN position and the shift lever in PARK.
      Turn key to OFF position and wait 30 seconds.
      Set the tester to 10 ohms.
      Turn key to RUN position, move the shift lever from PARK to DRIVE, wait 10 seconds and then move
      the shift lever back to PARK.
      Wait 30 seconds with the key in the RUN Position and the shift lever in PARK.
      NOTE: THE FUEL GAUGE SHOULD READ "E" (EMPTY MARK) OR BELOW WHEN CARRYING OUT THIS
      TEST STEP.
      Turn key to OFF position and wait 30 seconds.
      Set the tester to 180 ohms.
      Turn key to ON position.
      NOTE: THE FUEL GAUGE SHOULD READ "F" (FULL) OR ABOVE WHEN CARRYING OUT THIS TEST STEP.
      Wait 1 minute for the gauge to respond.
      Turn key to OFF position. After completing Steps 4A-O, if the fuel gauge operates correctly replace the
      fuel sender only (9A299). If not, refer to the Workshop Manual, Section 413-01 and perform normal
      diagnostics.
      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.
      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
      With the vehicle in park, turn the key to the run position key on/engine off (KOEO).
      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.
      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
      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.
      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.
      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.
      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)
      2006 Model Year Vehicles - All Engine Applications (Figure 5)
      NOTE: VALUES 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)
      WARRANTY STATUS:
      Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
      DEALER CODING
      BASIC PART NO. CONDITION CODE
      9a299 28
      Figure 3 - Article 06-2-12
      Figure 4 - Article 06-2-12
      Figure 5 - Article 06-2-12
       
    4. coled43

      coled43 Member

      Joined:
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      City, State:
      Auburn, MA
      Year, Model & Trim Level:
      99 XL, 02 XLS
      There is another TSB that could apply to an 02. I think it's what is going on with my 02 built in 3/02. The gauge seems to work fine except for the itermittent drop to E. I'm assuming that the tank would need to be dropped in order to change it out, but maybe not. Anyone know?

      Fuel Gauge - Intermittently Drops to Empty
      Article No.
      03-6-5

      03/31/03

      ELECTRICAL - FUEL GAUGE INTERMITTENT DROPS
      TO EMPTY - SENDER KIT AVAILABLE FOR
      SERVICE - VEHICLES PRODUCED BEFORE 5/20/2002
      EQUIPPED WITH 4.0L ENGINE ONLY

      FORD:
      2002 EXPLORER

      MERCURY:
      2002 MOUNTAINEER

      Article 03-1-8 is being republished in its entirety to clarify vehicle model and line coverage and to specify unaffected vehicles.

      ISSUE
      Some 2002 4dr Explorer/Mountaineer vehicles equipped with a 4.0L SOHC engine and 5R55W/5R555 transmission, may exhibit an intermittent fuel gauge level dropping to empty when fuel level is not actually empty. Diagnostic Trouble Codes (DTC's) B1201, B1202, B1204, may or may not be present. This may be due to an intermittent open circuit within the in-line Flex Fuel Module (black oval device with the fuel pump wiring pigtail) known as an AC/DC convertor.

      ACTION
      Install a Flex Fuel Module Wiring Pigtail Kit 2L2Z-9B357-AA. Refer to the instructions included in the kit.

      IMPORTANT : Canadian built 4.0L 4dr Explorer/Mountaineer vehicles built before 3/4/2002, 4dr Explorer/Mountaineer with manual transmissions or 4dr Explorer/Mountaineer vehicles equipped with 4.6L V8 powertrains are not equipped with AC/DC converters.

      NOTE : If vehicle contains any of the above criteria under the heading IMPORTANT , continue with normal vehicle diagnosis.

      SERVICE PROCEDURE

      IMPORTANT :Vehicles that do not contain an AC/DC converter are not effected by this article.

      Continue with normal Workshop Manual diagnosis.

      Unaffected Vehicles

      ^ Canadian built 4.0L 4dr Explorer/Mountaineer vehicles built before 3/4/2002

      ^ Manual Transmission Equipped Explorer/Mountaineer vehicles

      ^ 4.6L V8 Equipped Explorer/Mountaineer vehicles

      ^ Applicable vehicles built 5/20/2002 and later us a different fuel pump/connector. Kit 2L2Z-9B357-M cannot be used.
       
    5. Kentski

      Kentski New Member

      Joined:
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      City, State:
      Ann Arbor, Michigan
      Year, Model & Trim Level:
      2002 XLT
      What I don't understand is if this is a intermittent wiring or sender problem, why doesn't it occur several times during the drive cycle? If the check gage light doesn't come on and the fuel gage go to zero within the frist minute or two into a drive cycle ...it doesnt happen for that key-up/drive cycle. I have driven for 50 miles or more and nothing happened until the next key-up.

      My explorer is not a flex fuel vehicle so I don't think Article 3-6-5 applies. I do not have DTC's so I think Procerure "C" of the first TSB is worth a try. No figures/reference charts came through in the post so I am not sure what the acceptable values should be. Ffdemoss could you please resend these?

      Thanks ffdemoss & coled43.
       

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