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<servinfo
releasenbr="1"
update="original"
id="m81e863889ac41ee850d467f7f718aab"
><title
>U1403-IMPLAUSIBLE FUEL VOLUME SIGNAL RECEIVED</title><figure
figtype="2-column-portrait-no-fig-id"
id="e1d21b20b33f45c49034dfe1a758132a"
><graphic
graphicname="7a033925"
></graphic></figure><para
><ptxt
>For a complete wiring diagram <emph
>Refer to Section 8W</emph>.</ptxt></para><diagnostic
type="condition"
><condition
><spec
><list1
><item
><ptxt
><emph
>When Monitored:</emph></ptxt><para
><ptxt
>Ignition on.</ptxt></para></item><item
><ptxt
><emph
>Set Condition:</emph></ptxt><para
><ptxt
>The fuel volume message the PCM is receiving is implausible. The circuit is continuously monitored. One Trip fault.</ptxt></para></item></list1><table
><tgroup
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font-size="7pt"
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border-collapse="collapse-with-precedence"
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border-width="1pt"
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border-style="solid"
space-after="6pt"
table-layout="fixed"
><table-column
column-number="1"
column-width="proportional-column-width(396)"
></table-column><thead
><row
><entry
valign="bottom"
align="center"
><ptxt
><emph
>Possible Causes</emph></ptxt></entry></row></thead><tbody
><row
><entry
valign="top"
align="left"
><ptxt
>CAN CIRCUIT OPEN OR SHORTED</ptxt></entry></row><row
><entry
valign="top"
align="left"
><ptxt
>TOTALLY INTEGRATED POWER MODULE</ptxt></entry></row><row
><entry
valign="top"
align="left"
><ptxt
>PCM</ptxt></entry></row></tbody></tgroup></table></spec><para
><ptxt
><emph
>Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. <extxref
document="SOFTLINK"
extrefid="0900000030"
>(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)</extxref>.</emph></ptxt></para></condition></diagnostic><diagnostic
type="condition"
><title
>Theory of Operation</title><condition
><para
><ptxt
>The Totally Integrated Power Module isn't receiving a fuel volume signal from the Fuel Level Sensor. The PCM received the Fuel Level signal from the TIPM over the CAN C Bus circuit. The signal
the TIPM is sending over CAN C is implausible.</ptxt></para></condition></diagnostic><diagnostic
type="test"
><?STEP 1------------------------------------------------------------------------------------------------------------------------------------------------------------------------------?><testgrp
><title
>Diagnostic Test</title><spec
><ptxt
><testno><emph>1.</emph></testno> <emph
>ACTIVE DTC</emph></ptxt></spec><test1
><ptxt
>Ignition on, engine not running.</ptxt></test1><test1
><ptxt
>With a scan tool, select View DTCs.</ptxt></test1><question
>Is the DTC Active at this time?</question><result
>Yes</result><action
><list1
><item
><ptxt
>Go To <intxref
refid="hf3c5626b89541998efc06a63fa26449"
>2</intxref> </ptxt></item></list1></action><result
>No</result><action
><list1
><item
><ptxt
>Refer to the INTERMITTENT CONDITION Diagnostic Procedure.</ptxt></item><item
><ptxt
>Perform the POWERTRAIN VERIFICATION TEST. <extxref
document="SOFTLINK"
extrefid="0900000360"
>(Refer to 9 - ENGINE - STANDARD PROCEDURE)</extxref><symbol
name="SKIP"
></symbol></ptxt></item></list1></action></testgrp><?STEP 2------------------------------------------------------------------------------------------------------------------------------------------------------------------------------?><testgrp
id="hf3c5626b89541998efc06a63fa26449"
><spec
><ptxt
><testno><emph>2.</emph></testno> <emph
>CAN C HARDWARE DTCS ALSO ACTIVE</emph></ptxt></spec><test1
><ptxt
>With a scan tool check for DTCs in the TIPM.</ptxt></test1><question
>Are any CAN C Hardware related DTCs active at this time?</question><result
>Yes</result><action
><list1
><item
><ptxt
>(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - DIAGNOSIS AND TESTING) for the appropriate diagnostic procedures.</ptxt></item><item
><ptxt
>Perform BODY VERIFICATION TEST – VER 1.</ptxt></item></list1></action><result
>No</result><action
><list1
><item
><ptxt
>Replace and program the Powertrain Control Module per Service Information.</ptxt></item><item
><ptxt
>Perform the POWERTRAIN VERIFICATION TEST. <extxref
document="SOFTLINK"
extrefid="0900000360"
>(Refer to 9 - ENGINE - STANDARD PROCEDURE)</extxref><symbol
name="SKIP"
></symbol></ptxt></item></list1></action></testgrp></diagnostic></servinfo>