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<servinfo
releasenbr="1"
update="original"
id="necf6c268fdd4b129f3604971b152511"
><title
>U0126–LOST COMMUNICATION WITH STEERING ANGLE SENSOR</title><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></item><list2
enumtype="bullet"
><item
><ptxt
>With the ignition on</ptxt></item><item
><ptxt
>Battery voltage between 10 and 16 volts</ptxt></item><item
><ptxt
>IOD fuse installed</ptxt></item></list2><item
><ptxt
><emph
>Set Condition:</emph></ptxt><para
><ptxt
>If the Anti-Lock Brakes Module fails to receive bus messages from the Steering Angle Sensor for approximately 500 ms.</ptxt></para></item></list1><table
><tgroup
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border-width="1pt"
border-color="black"
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
>DTCs RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES</ptxt></entry></row><row
><entry
valign="top"
align="left"
><ptxt
>CAN C BUS CIRCUITS OPEN OR SHORTED</ptxt></entry></row><row
><entry
valign="top"
align="left"
><ptxt
>STEERING ANGLE SENSOR POWER AND GROUND</ptxt></entry></row><row
><entry
valign="top"
align="left"
><ptxt
>STEERING ANGLE SENSOR</ptxt></entry></row><row
><entry
valign="top"
align="left"
><ptxt
>ANTI-LOCK BRAKES MODULE</ptxt></entry></row></tbody></tgroup></table></spec></condition></diagnostic><diagnostic
type="test"
><?STEP 1------------------------------------------------------------------------------------------------------------------------------------------------------------------------------?><testgrp
><title
>Diagnostic Test</title><spec
><ptxt
><testno><emph>1.</emph></testno> <emph
>VERIFY DTC IS ACTIVE</emph></ptxt></spec><attention3
name="NOTE"
><ptxt
>Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.</ptxt></attention3><test1
><ptxt
>Turn the ignition on.</ptxt></test1><test1
><ptxt
>With the scan tool, read and record ABS DTCs.</ptxt></test1><test1
><ptxt
>With the scan tool, read and record Environmental Data (EV Data).</ptxt></test1><test1
><ptxt
>With the scan tool, erase ABS DTCs.</ptxt></test1><test1
><ptxt
>Cycle the ignition switch.</ptxt></test1><test1
><ptxt
>With the scan tool, read ABS DTCs.</ptxt></test1><question
>Does this DTC reset?</question><result
>Yes</result><action
><list1
><item
><ptxt
>Go To <intxref
refid="h23d5d4ee9d54698913b24a5e48b6229"
>2</intxref></ptxt></item></list1></action><result
>No</result><action
><list1
><item
><ptxt
>The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced,
pinched, or partially broken wires.</ptxt></item><item
><ptxt
>Refer to the ABS-INTERMITTENT CONDITION TEST. <extxref
document="SOFTLINK"
extrefid="0500000030"
>(Refer to 5 - BRAKES - DIAGNOSIS AND TESTING)</extxref> <symbol
name="SKIP"
></symbol></ptxt></item></list1></action></testgrp><?STEP 2------------------------------------------------------------------------------------------------------------------------------------------------------------------------------?><testgrp
id="h23d5d4ee9d54698913b24a5e48b6229"
><spec
><ptxt
><testno><emph>2.</emph></testno> <emph
>CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCs</emph></ptxt></spec><test1
><ptxt
>With the scan tool, read all active DTCs from all CAN C Bus modules.</ptxt></test1><test1
><attention3
name="NOTE"
><ptxt
>Check for CAN C hardware electrical, VIN Missing/Mismatch, battery or ignition related DTCs.</ptxt></attention3></test1><question
>Does the scan tool display any active DTCs related to the conditions listed above?</question><result
>Yes</result><action
><list1
><item
><ptxt
>Diagnose and repair the DTC(s). Refer to the Table of Contents in the applicable Section.</ptxt></item><item
><ptxt
>Perform BODY VERIFICATION TEST – VER 1.<extxref
document="SOFTLINK"
extrefid="0857000360"
>(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)</extxref>.</ptxt></item></list1></action><result
>No</result><action
><list1
><item
><ptxt
>Go To <intxref
refid="kbf11c5752854e0a989951a468d95f87"
>3</intxref><symbol
name="skip"
></symbol></ptxt></item></list1></action></testgrp><?STEP 3------------------------------------------------------------------------------------------------------------------------------------------------------------------------------?><testgrp
id="kbf11c5752854e0a989951a468d95f87"
><spec
><ptxt
><testno><emph>3.</emph></testno> <emph
>VERIFY THAT THE STEERING ANGLE SENSOR IS ACTIVE ON THE BUS</emph></ptxt></spec><test1
><ptxt
>With the scan tool, select ECU View.</ptxt></test1><test1
><ptxt
>Verify that the Steering Angle Sensor is active on the bus.</ptxt></test1><question
>Is the Steering Angle Sensor active on the bus?</question><result
>Yes</result><action
><list1
><item
><ptxt
>Go To <intxref
refid="ja295397e3244cd3b809421bdd128110"
>4</intxref></ptxt></item></list1></action><result
>No</result><action
><list1
><item
><ptxt
>Refer to the Stored Lost Communication test procedure. Refer to the table of contents in this section.</ptxt></item><item
><ptxt
>Perform BODY VERIFICATION TEST – VER 1.<extxref
document="SOFTLINK"
extrefid="0857000360"
>(Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)</extxref>.<symbol
name="SKIP"
></symbol></ptxt></item></list1></action></testgrp><?STEP 4------------------------------------------------------------------------------------------------------------------------------------------------------------------------------?><testgrp
id="ja295397e3244cd3b809421bdd128110"
><spec
><ptxt
><testno><emph>4.</emph></testno> <emph
>CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCs</emph></ptxt></spec><test1
><ptxt
>With the scan tool, select Network View and select Advanced.</ptxt></test1><question
>Is there more than one module with active DTCs “Logged Against” the STEERING ANGLE SENSOR?</question><result
>Yes</result><action
><list1
><item
><ptxt
>Replace/update the Steering Angle Sensor in accordance with the service information.</ptxt></item><item
><ptxt
>Perform ABS VERIFICATION TEST. <extxref
document="SOFTLINK"
extrefid="0500000360"
>(Refer to 5 - BRAKES - STANDARD PROCEDURE)</extxref>.</ptxt></item></list1></action><result
>No</result><action
><list1
><item
><ptxt
>Replace the Anti-Lock Brakes Module in accordance with the service information.</ptxt></item><item
><ptxt
>Perform ABS VERIFICATION TEST. <extxref
document="SOFTLINK"
extrefid="0500000360"
>(Refer to 5 - BRAKES - STANDARD PROCEDURE)</extxref>.<symbol
name="SKIP"
></symbol></ptxt></item></list1></action></testgrp></diagnostic></servinfo>