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Help with p0340 code
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<blockquote data-quote="hotcobra03" data-source="post: 15831916" data-attributes="member: 53096"><p>2003 PCED OBDII</p><p>SECTION 5: Pinpoint Tests</p><p>DR: Camshaft Position (CMP) Sensor</p><p><img src="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=arrowbak.gif~gen~ref.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /><a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325031.htm~gen~ref.htm" target="_blank"> DR: Introduction </a> </p><p><span style="font-size: 12px"><strong>DR1 DTC P0340, P0345: CHECK IF ENGINE WILL START </strong></span></p><ul> <li data-xf-list-type="ul">Attempt to start engine.</li> </ul><p>Will the engine start?</p><p><strong>Yes </strong> <strong>No </strong></p><p>GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR2" target="_blank">DR2 </a>. DTC P0340 or P0345 is not the cause of the No Start. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~leftside=V32s3l.htm&rightside=V32s3r.htm&market=us&lang=en~gen~2col.htm" target="_blank">Section 3 </a>to diagnose the No Start symptom.</p><p> </p><p><span style="font-size: 12px"><strong>DR2 CHECK CMP SIGNAL SENT TO PCM </strong></span></p><ul> <li data-xf-list-type="ul">Engine running.</li> <li data-xf-list-type="ul">Connect scan tool.</li> <li data-xf-list-type="ul">Select CMPFM and if present CMPFM2 PID(s).</li> </ul><p>Is a fault indicated with either or both CMP sensors?</p><p><strong>Yes </strong> <strong>No </strong></p><p>Individually diagnose CMP sensor(s) indicating a fault. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR3" target="_blank">DR3 </a>. CMP, PCM and harness(es) working properly at this time. Concern is intermittent. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325138.htm~gen~ref.htm#pptZ1" target="_blank">Z1 </a>.</p><p> </p><p><span style="font-size: 12px"><strong>DR3 CLEAR AND ATTEMPT TO RE-GENERATE CONTINUOUS DTC P0340, P0345 </strong></span></p><ul> <li data-xf-list-type="ul">Complete PCM Reset to clear DTCs.</li> <li data-xf-list-type="ul">Increase RPM to greater than 1500 for 10 seconds. Repeat twice.</li> <li data-xf-list-type="ul">Retrieve all Continuous Memory DTCs.</li> </ul><p>Is DTC P0340 or P0345 present?</p><p><strong>Yes </strong> <strong>No </strong></p><p>Key OFF. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR4" target="_blank">DR4 </a>. The fault that produced DTC P0340 or P0345 is intermittent. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325138.htm~gen~ref.htm#pptZ1" target="_blank">Z1 </a>.</p><p> </p><p><span style="font-size: 12px"><strong>DR4 DETERMINE CMP SENSOR PHYSICAL TYPE </strong></span></p><p>Is the CMP sensor a drop-in (synchronizer) type?</p><p><strong>Yes </strong> <strong>No </strong></p><p>GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR5" target="_blank">DR5 </a>. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR6" target="_blank">DR6 </a>.</p><p> </p><p><span style="font-size: 12px"><strong>DR5 VERIFY CORRECT INSTALLATION OF CMP SENSOR </strong></span></p><ul> <li data-xf-list-type="ul">A CMP sensor identifies the cylinder #1 power stroke. A sensor that is improperly installed/indexed can identify the wrong cylinder as #1, produce a tip-in hesitation and generate DTC P0340. VERIFY the correct installation by referring to Electronic Engine Controls, Section 303-14 in the Workshop Manual.<br /> <strong>Note: </strong>If the vehicle has a miss and DTC P0340, possible ignition, alternator noise, RFI, and CKP concerns may be present.<br /> </li> </ul><p>Is the CMP sensor installed correctly?</p><p><strong>Yes </strong> <strong>No </strong></p><p>GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR6" target="_blank">DR6 </a>. REPOSITION CMP sensor.</p><p> </p><p><span style="font-size: 12px"><strong>DR6 DETERMINE CMP SENSOR ELECTRONIC TYPE </strong></span></p><ul> <li data-xf-list-type="ul"><br /> <strong>Note: </strong>VR (Variable Reluctance) sensors have 2-wire connectors, Hall Effect sensors have 3-wire connectors.<br /> </li> </ul><p>Is the CMP sensor a VR type?</p><p><strong>Yes </strong> <strong>No </strong></p><p>Key OFF. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR7" target="_blank">DR7 </a>. CMP sensor is Hall Effect type. Key OFF. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR13" target="_blank">DR13 </a>.</p><p> </p><p><span style="font-size: 12px"><strong>DR7 CHECK CMP SENSOR RESISTANCE </strong></span></p><ul> <li data-xf-list-type="ul">Disconnect CMP sensor.</li> <li data-xf-list-type="ul">Measure resistance of CMP sensor between CMP and SIG RTN.<br /> <strong>Note: </strong>CMP sensor resistance values change significantly with temperature rise.<br /> </li> </ul><p>Is resistance between 250 and 1K ohms?</p><p><strong>Yes </strong> <strong>No </strong></p><p>GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR8" target="_blank">DR8 </a>. REPLACE CMP sensor.</p><p> </p><p><span style="font-size: 12px"><strong>DR8 CHECK CMP CIRCUIT FOR SHORT TO POWER IN HARNESS </strong></span></p><ul> <li data-xf-list-type="ul">Disconnect PCM.</li> <li data-xf-list-type="ul">Key ON, engine OFF.</li> <li data-xf-list-type="ul">Measure voltage between CMP circuit (at PCM or CMP harness connector) and battery (-) terminal.</li> </ul><p>Is voltage less than 1.0V DC?</p><p><strong>Yes </strong> <strong>No </strong></p><p>Key OFF. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR9" target="_blank">DR9 </a>. REPAIR short circuit.</p><p> </p><p><span style="font-size: 12px"><strong>DR9 CHECK FOR OPEN IN HARNESS BETWEEN PCM AND CMP SENSOR </strong></span></p><ul> <li data-xf-list-type="ul"><br /> <strong>Note: </strong>Refer to the PCM connector pin numbers in the beginning of this pinpoint test. <br /> <br /> VR type sensors are susceptible to electrical interference (noise). Harness shielding, where present, should be reinstalled properly when removed for testing.<br /> </li> <li data-xf-list-type="ul">Measure resistance of CMP circuit between PCM harness connector and CMP sensor harness connector.</li> <li data-xf-list-type="ul">Measure resistance of SIG RTN circuit between PCM harness connector and CMP sensor harness connector.</li> </ul><p>Are resistance measurements less than 5.0 ohms for each wire?</p><p><strong>Yes </strong> <strong>No </strong></p><p>GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR10" target="_blank">DR10 </a>. REPAIR open circuit.</p><p> </p><p><span style="font-size: 12px"><strong>DR10 CHECK FOR SHORT IN HARNESS BETWEEN PCM AND CMP SENSOR </strong></span></p><ul> <li data-xf-list-type="ul">Measure resistance between CMP and SIG RTN circuit (at either PCM or CMP harness connector).</li> <li data-xf-list-type="ul">Measure resistance between CMP circuit and battery (-) terminal.</li> <li data-xf-list-type="ul">Measure resistance between SIG RTN circuit and battery (-) terminal.</li> </ul><p>Is resistance(s) less than 10K ohms on any measurement?</p><p><strong>Yes </strong> <strong>No </strong></p><p>REPAIR short circuit. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR11" target="_blank">DR11 </a>.</p><p> </p><p><span style="font-size: 12px"><strong>DR11 CHECK FOR SHORTS IN PCM </strong></span></p><ul> <li data-xf-list-type="ul">Reconnect PCM.</li> <li data-xf-list-type="ul">Measure resistance between CMP and SIG RTN circuits at the CMP harness connector.</li> </ul><p>Is resistance(s) greater than 500 ohms?</p><p><strong>Yes </strong> <strong>No </strong></p><p>GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR12" target="_blank">DR12 </a>. REPLACE PCM (refer to Section 2, <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V322011.htm~gen~ref.htm" target="_blank">Flash Electrically Erasable Programmable Read Only Memory (EEPROM) </a>.</p><p> </p><p><span style="font-size: 12px"><strong>DR12 CHECK CMP SENSOR OUTPUT </strong></span></p><ul> <li data-xf-list-type="ul">Reconnect CMP sensor.</li> <li data-xf-list-type="ul">Digital multimeter on low voltage AC scale.</li> <li data-xf-list-type="ul">Measure voltage between CMP and SIG RTN circuit while running engine at approximately 2500 RPM.</li> </ul><p>Is voltage greater than 0.25V AC?</p><p><strong>Yes </strong> <strong>No </strong></p><p>REPLACE PCM (refer to Section 2, <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V322011.htm~gen~ref.htm" target="_blank">Flash Electrically Erasable Programmable Read Only Memory (EEPROM) </a>. REPLACE CMP sensor.</p><p> </p><p><span style="font-size: 12px"><strong>DR13 CHECK VPWR VOLTAGE TO CMP SENSOR </strong></span></p><ul> <li data-xf-list-type="ul">Disconnect CMP sensor.</li> <li data-xf-list-type="ul">Key ON, engine OFF.</li> <li data-xf-list-type="ul">Measure VPWR circuit voltage between CMP sensor harness connector and battery (-) terminal.</li> </ul><p>Is voltage greater than 10.5V DC?</p><p><strong>Yes </strong> <strong>No </strong></p><p>Key OFF. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR14" target="_blank">DR14 </a>. REPAIR open circuit.</p><p> </p><p><span style="font-size: 12px"><strong>DR14 CHECK PWR GND VOLTAGE TO CMP SENSOR </strong></span></p><ul> <li data-xf-list-type="ul">Measure PWR GND circuit voltage between CMP sensor harness connector and battery (+) terminal.</li> </ul><p>Is voltage greater than 10.5V DC?</p><p><strong>Yes </strong> <strong>No </strong></p><p>GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR15" target="_blank">DR15 </a>. REPAIR open circuit.</p><p> </p><p><span style="font-size: 12px"><strong>DR15 CHECK CMP CIRCUIT FOR SHORT TO POWER IN HARNESS </strong></span></p><ul> <li data-xf-list-type="ul">Disconnect PCM.</li> <li data-xf-list-type="ul">Key ON, engine OFF.</li> <li data-xf-list-type="ul">Measure voltage between CMP circuit (at PCM or CMP harness connector) and ground.</li> </ul><p>Is voltage less than 1.0V DC?</p><p><strong>Yes </strong> <strong>No </strong></p><p>Key OFF. GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR16" target="_blank">DR16 </a>. REPAIR short circuit.</p><p> </p><p><span style="font-size: 12px"><strong>DR16 CHECK FOR OPEN CIRCUITS BETWEEN PCM AND CMP SENSOR </strong></span></p><ul> <li data-xf-list-type="ul"><br /> <strong>Note: </strong>Refer to the PCM connector pin numbers in the beginning of this pinpoint test.<br /> </li> <li data-xf-list-type="ul">Disconnect PCM and CMP sensor.</li> <li data-xf-list-type="ul">Measure resistance of CMP, VPWR and PWR GND circuits between PCM harness connector and CMP sensor harness connector.</li> </ul><p>Are resistance measurements less than 5.0 ohms for each wire?</p><p><strong>Yes </strong> <strong>No </strong></p><p>GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR17" target="_blank">DR17 </a>. REPAIR open circuit.</p><p> </p><p><span style="font-size: 12px"><strong>DR17 CHECK CMP CIRCUIT FOR SHORT TO GND IN HARNESS </strong></span></p><ul> <li data-xf-list-type="ul">Measure resistance between CMP and PWR GND circuits (at either PCM or CMP harness connector).</li> </ul><p>Is resistance(s) greater than 10K ohms?</p><p><strong>Yes </strong> <strong>No </strong></p><p>GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR18" target="_blank">DR18 </a>. REPAIR short circuit.</p><p> </p><p><span style="font-size: 12px"><strong>DR18 CHECK FOR SHORTS IN PCM </strong></span></p><ul> <li data-xf-list-type="ul">Measure resistance between CMP circuit and both the VPWR and PWR GND circuits at the CMP harness connector.</li> </ul><p>Is resistance(s) greater than 500 ohms?</p><p><strong>Yes </strong> <strong>No </strong></p><p>GO to <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR19" target="_blank">DR19 </a>. REPLACE PCM (refer to Section 2, <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V322011.htm~gen~ref.htm" target="_blank">Flash Electrically Erasable Programmable Read Only Memory (EEPROM) </a>.</p><p> </p><p><span style="font-size: 12px"><strong>DR19 CHECK CMP SENSOR OUTPUT DURING CRANK MODE </strong></span></p><ul> <li data-xf-list-type="ul">Reconnect CMP sensor.<br /> <strong>Note: </strong>On vehicles equipped with 150 pin PCMs and PATS (Passive Anti-Theft System), RECONNECT the Transmission (T) and Body (B) PCM connectors ONLY if disconnected. The engine may not crank unless they are connected. Keep the Engine (E) connector disconnected.<br /> <br /> </li> <li data-xf-list-type="ul">Digital multimeter on 12V DC scale.</li> <li data-xf-list-type="ul">Connect digital multimeter between CMP and the PWR GND circuit at the PCM Harness Connector.</li> <li data-xf-list-type="ul">Crank engine for at least 10 revolutions.</li> </ul><p>Does voltage reading switch between low (less than 2.0V DC) and high (greater than 8.0V DC)?</p><p><strong>Yes </strong> <strong>No </strong></p><p>REPLACE PCM (refer to Section 2, <a href="https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V322011.htm~gen~ref.htm" target="_blank">Flash Electrically Erasable Programmable Read Only Memory (EEPROM) </a>. REPLACE CMP sensor.</p></blockquote><p></p>
[QUOTE="hotcobra03, post: 15831916, member: 53096"] 2003 PCED OBDII SECTION 5: Pinpoint Tests DR: Camshaft Position (CMP) Sensor [IMG]https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=arrowbak.gif~gen~ref.gif[/IMG][URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325031.htm~gen~ref.htm'] DR: Introduction [/URL] [SIZE=3][B]DR1 DTC P0340, P0345: CHECK IF ENGINE WILL START [/B][/SIZE] [LIST] [*]Attempt to start engine. [/LIST] Will the engine start? [B]Yes [/B] [B]No [/B] GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR2']DR2 [/URL]. DTC P0340 or P0345 is not the cause of the No Start. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~leftside=V32s3l.htm&rightside=V32s3r.htm&market=us&lang=en~gen~2col.htm']Section 3 [/URL]to diagnose the No Start symptom. [SIZE=3][B]DR2 CHECK CMP SIGNAL SENT TO PCM [/B][/SIZE] [LIST] [*]Engine running. [*]Connect scan tool. [*]Select CMPFM and if present CMPFM2 PID(s). [/LIST] Is a fault indicated with either or both CMP sensors? [B]Yes [/B] [B]No [/B] Individually diagnose CMP sensor(s) indicating a fault. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR3']DR3 [/URL]. CMP, PCM and harness(es) working properly at this time. Concern is intermittent. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325138.htm~gen~ref.htm#pptZ1']Z1 [/URL]. [SIZE=3][B]DR3 CLEAR AND ATTEMPT TO RE-GENERATE CONTINUOUS DTC P0340, P0345 [/B][/SIZE] [LIST] [*]Complete PCM Reset to clear DTCs. [*]Increase RPM to greater than 1500 for 10 seconds. Repeat twice. [*]Retrieve all Continuous Memory DTCs. [/LIST] Is DTC P0340 or P0345 present? [B]Yes [/B] [B]No [/B] Key OFF. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR4']DR4 [/URL]. The fault that produced DTC P0340 or P0345 is intermittent. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325138.htm~gen~ref.htm#pptZ1']Z1 [/URL]. [SIZE=3][B]DR4 DETERMINE CMP SENSOR PHYSICAL TYPE [/B][/SIZE] Is the CMP sensor a drop-in (synchronizer) type? [B]Yes [/B] [B]No [/B] GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR5']DR5 [/URL]. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR6']DR6 [/URL]. [SIZE=3][B]DR5 VERIFY CORRECT INSTALLATION OF CMP SENSOR [/B][/SIZE] [LIST] [*]A CMP sensor identifies the cylinder #1 power stroke. A sensor that is improperly installed/indexed can identify the wrong cylinder as #1, produce a tip-in hesitation and generate DTC P0340. VERIFY the correct installation by referring to Electronic Engine Controls, Section 303-14 in the Workshop Manual. [B]Note: [/B]If the vehicle has a miss and DTC P0340, possible ignition, alternator noise, RFI, and CKP concerns may be present. [/LIST] Is the CMP sensor installed correctly? [B]Yes [/B] [B]No [/B] GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR6']DR6 [/URL]. REPOSITION CMP sensor. [SIZE=3][B]DR6 DETERMINE CMP SENSOR ELECTRONIC TYPE [/B][/SIZE] [LIST] [B]Note: [/B]VR (Variable Reluctance) sensors have 2-wire connectors, Hall Effect sensors have 3-wire connectors. [/LIST] Is the CMP sensor a VR type? [B]Yes [/B] [B]No [/B] Key OFF. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR7']DR7 [/URL]. CMP sensor is Hall Effect type. Key OFF. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR13']DR13 [/URL]. [SIZE=3][B]DR7 CHECK CMP SENSOR RESISTANCE [/B][/SIZE] [LIST] [*]Disconnect CMP sensor. [*]Measure resistance of CMP sensor between CMP and SIG RTN. [B]Note: [/B]CMP sensor resistance values change significantly with temperature rise. [/LIST] Is resistance between 250 and 1K ohms? [B]Yes [/B] [B]No [/B] GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR8']DR8 [/URL]. REPLACE CMP sensor. [SIZE=3][B]DR8 CHECK CMP CIRCUIT FOR SHORT TO POWER IN HARNESS [/B][/SIZE] [LIST] [*]Disconnect PCM. [*]Key ON, engine OFF. [*]Measure voltage between CMP circuit (at PCM or CMP harness connector) and battery (-) terminal. [/LIST] Is voltage less than 1.0V DC? [B]Yes [/B] [B]No [/B] Key OFF. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR9']DR9 [/URL]. REPAIR short circuit. [SIZE=3][B]DR9 CHECK FOR OPEN IN HARNESS BETWEEN PCM AND CMP SENSOR [/B][/SIZE] [LIST] [B]Note: [/B]Refer to the PCM connector pin numbers in the beginning of this pinpoint test. VR type sensors are susceptible to electrical interference (noise). Harness shielding, where present, should be reinstalled properly when removed for testing. [*]Measure resistance of CMP circuit between PCM harness connector and CMP sensor harness connector. [*]Measure resistance of SIG RTN circuit between PCM harness connector and CMP sensor harness connector. [/LIST] Are resistance measurements less than 5.0 ohms for each wire? [B]Yes [/B] [B]No [/B] GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR10']DR10 [/URL]. REPAIR open circuit. [SIZE=3][B]DR10 CHECK FOR SHORT IN HARNESS BETWEEN PCM AND CMP SENSOR [/B][/SIZE] [LIST] [*]Measure resistance between CMP and SIG RTN circuit (at either PCM or CMP harness connector). [*]Measure resistance between CMP circuit and battery (-) terminal. [*]Measure resistance between SIG RTN circuit and battery (-) terminal. [/LIST] Is resistance(s) less than 10K ohms on any measurement? [B]Yes [/B] [B]No [/B] REPAIR short circuit. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR11']DR11 [/URL]. [SIZE=3][B]DR11 CHECK FOR SHORTS IN PCM [/B][/SIZE] [LIST] [*]Reconnect PCM. [*]Measure resistance between CMP and SIG RTN circuits at the CMP harness connector. [/LIST] Is resistance(s) greater than 500 ohms? [B]Yes [/B] [B]No [/B] GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR12']DR12 [/URL]. REPLACE PCM (refer to Section 2, [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V322011.htm~gen~ref.htm']Flash Electrically Erasable Programmable Read Only Memory (EEPROM) [/URL]. [SIZE=3][B]DR12 CHECK CMP SENSOR OUTPUT [/B][/SIZE] [LIST] [*]Reconnect CMP sensor. [*]Digital multimeter on low voltage AC scale. [*]Measure voltage between CMP and SIG RTN circuit while running engine at approximately 2500 RPM. [/LIST] Is voltage greater than 0.25V AC? [B]Yes [/B] [B]No [/B] REPLACE PCM (refer to Section 2, [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V322011.htm~gen~ref.htm']Flash Electrically Erasable Programmable Read Only Memory (EEPROM) [/URL]. REPLACE CMP sensor. [SIZE=3][B]DR13 CHECK VPWR VOLTAGE TO CMP SENSOR [/B][/SIZE] [LIST] [*]Disconnect CMP sensor. [*]Key ON, engine OFF. [*]Measure VPWR circuit voltage between CMP sensor harness connector and battery (-) terminal. [/LIST] Is voltage greater than 10.5V DC? [B]Yes [/B] [B]No [/B] Key OFF. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR14']DR14 [/URL]. REPAIR open circuit. [SIZE=3][B]DR14 CHECK PWR GND VOLTAGE TO CMP SENSOR [/B][/SIZE] [LIST] [*]Measure PWR GND circuit voltage between CMP sensor harness connector and battery (+) terminal. [/LIST] Is voltage greater than 10.5V DC? [B]Yes [/B] [B]No [/B] GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR15']DR15 [/URL]. REPAIR open circuit. [SIZE=3][B]DR15 CHECK CMP CIRCUIT FOR SHORT TO POWER IN HARNESS [/B][/SIZE] [LIST] [*]Disconnect PCM. [*]Key ON, engine OFF. [*]Measure voltage between CMP circuit (at PCM or CMP harness connector) and ground. [/LIST] Is voltage less than 1.0V DC? [B]Yes [/B] [B]No [/B] Key OFF. GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR16']DR16 [/URL]. REPAIR short circuit. [SIZE=3][B]DR16 CHECK FOR OPEN CIRCUITS BETWEEN PCM AND CMP SENSOR [/B][/SIZE] [LIST] [B]Note: [/B]Refer to the PCM connector pin numbers in the beginning of this pinpoint test. [*]Disconnect PCM and CMP sensor. [*]Measure resistance of CMP, VPWR and PWR GND circuits between PCM harness connector and CMP sensor harness connector. [/LIST] Are resistance measurements less than 5.0 ohms for each wire? [B]Yes [/B] [B]No [/B] GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR17']DR17 [/URL]. REPAIR open circuit. [SIZE=3][B]DR17 CHECK CMP CIRCUIT FOR SHORT TO GND IN HARNESS [/B][/SIZE] [LIST] [*]Measure resistance between CMP and PWR GND circuits (at either PCM or CMP harness connector). [/LIST] Is resistance(s) greater than 10K ohms? [B]Yes [/B] [B]No [/B] GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR18']DR18 [/URL]. REPAIR short circuit. [SIZE=3][B]DR18 CHECK FOR SHORTS IN PCM [/B][/SIZE] [LIST] [*]Measure resistance between CMP circuit and both the VPWR and PWR GND circuits at the CMP harness connector. [/LIST] Is resistance(s) greater than 500 ohms? [B]Yes [/B] [B]No [/B] GO to [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V325032.htm~gen~ref.htm#pptDR19']DR19 [/URL]. REPLACE PCM (refer to Section 2, [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V322011.htm~gen~ref.htm']Flash Electrically Erasable Programmable Read Only Memory (EEPROM) [/URL]. [SIZE=3][B]DR19 CHECK CMP SENSOR OUTPUT DURING CRANK MODE [/B][/SIZE] [LIST] [*]Reconnect CMP sensor. [B]Note: [/B]On vehicles equipped with 150 pin PCMs and PATS (Passive Anti-Theft System), RECONNECT the Transmission (T) and Body (B) PCM connectors ONLY if disconnected. The engine may not crank unless they are connected. Keep the Engine (E) connector disconnected. [*]Digital multimeter on 12V DC scale. [*]Connect digital multimeter between CMP and the PWR GND circuit at the PCM Harness Connector. [*]Crank engine for at least 10 revolutions. [/LIST] Does voltage reading switch between low (less than 2.0V DC) and high (greater than 8.0V DC)? [B]Yes [/B] [B]No [/B] REPLACE PCM (refer to Section 2, [URL='https://www.svtperformance.com/forums/file:///C:/TSO/tsocache/M2343591_452/V32~us~en~file=V322011.htm~gen~ref.htm']Flash Electrically Erasable Programmable Read Only Memory (EEPROM) [/URL]. REPLACE CMP sensor. [/QUOTE]
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