Engine Controls - Troubleshooting Procedures & Tests: Other Dodge Magnum I facelift

*CHECKING FOR FUEL PRESSURE LEAK DOWN

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for 300.

SYSTEM WIRING DIAGRAMS for Charger.

SYSTEM WIRING DIAGRAMS for Magnum.

*CHECKING THE ENGINE MECHANICAL SYSTEM

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for 300.

SYSTEM WIRING DIAGRAMS for Charger.

SYSTEM WIRING DIAGRAMS for Magnum.

*CHECKING THE EVAPORATIVE SYSTEM FOR LEAKS

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for 300.

SYSTEM WIRING DIAGRAMS for Charger.

SYSTEM WIRING DIAGRAMS for Magnum.

Scheme 568

Scheme 569

Scheme 570

1. 1) EVAPORATIVE SYSTEM INSPECTION Turn the ignition off. Raise the vehicle as necessary in accordance with the Service Information. Perform a thorough inspection on the evaporative/fuel system. Check for the following conditions: - Holes or cracks - Loose seal points - Evidence of damaged components - Incorrect routing of hoses or tubes - Loose or missing fuel filler cap - Improper installation of the fuel filler cap - Damaged locking tabs on cap and/or fill tube - Damaged seal points on cap and/or fill tube - Fuel cap gasket seal missing or damaged Were any problems found? Yes Repair as necessary. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000) . No Go to step 2) .
2. 2) EVAPORATIVE SYSTEM LEAK To test the evaporative system for leaks you will need Miller Tool #8404A Evaporative Emission Leak Detector (EELD). WARNING: Keep lit cigarettes, sparks, flames, and other ignition sources away from the test area to prevent the ignition of explosive gases. Keep the test area well ventilated. Failure to follow these instructions can result in personal injury or death. NOTE: The fuel tank should have between 20% and 80% of fuel tank capacity to properly test the EVAP system. Connect the red power lead of the EELD to the battery positive terminal and the black ground lead to battery negative terminal. Connect shop air to the EELD. Set the smoke/air control switch to AIR. Insert the tester's AIR supply tip (clear hose) into the appropriate calibration orifice on the tester's control panel (based on DTC leak size). Press the remote smoke/air start button. Position the red flag on the air flow meter so it is aligned with the indicator ball. When the calibration is complete, release the remote button. The EELD flow meter is now calibrated in liters per minute to the size leak indicated by the DTC set in the PCM. Install the service port adapter #8404-14 on the vehicle's service port and block the vent hose of the EVAP canister (if equipped) or install the #8404-ADP service adapter into the filter line. Connect the AIR supply hose from the EELD to the service port (if equipped) or to the #8404-ADP adapter. Press the remote button to activate AIR flow. NOTE: Vehicles with large volume fuel tanks, lower fuel levels, or vehicles equipped with a flow management valve may indicate high flow and will require 4 to 5 minutes to fill. Compare the flow meter indicator ball reading to the red flag. ABOVE the red flag indicates that a leak present. BELOW the red flag indicates that the system is sealed. Is the indicator ball above the red flag? Yes Go to step 3) . No Refer to the Freeze Frame data, if applicable. If the Freeze Frame data indicates that the vehicle was in motion when the DTC was set, verify that all hoses are connected properly. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000) .
3. 3) EVAPORATIVE EMISSION LEAK DETECTION NOTE: A thorough inspection of the EVAP system hoses, tubes, and connections may save time in diagnosis. Look for physical damage or signs of wetness at connections. The strong smell of fuel vapors may aid diagnosis also. To continue testing, you will need Miller Tool #8404A Evaporative Emissions Leak Detector (EELD). Remove the AIR supply hose from the service port (if equipped) or from the #8404-ADP adapter. Connect the SMOKE supply tip (black hose) to the service port (if equipped) or to the #8404-ADP adapter. Set the smoke/air control switch to SMOKE. NOTE: The flow meter indicator ball will not move in the smoke mode. Press the remote smoke/air start button. NOTE: Make sure that smoke has filled the EVAP system by continuing to press the remote smoke/air start button, remove the vehicle fuel cap, and wait for the smoke to exit. Once smoke is detected, reinstall the fuel cap. NOTE: For the best results, introduce smoke into the system for an additional 60 seconds and continue introducing smoke at 15 second intervals, as necessary. While still holding the remote smoke/air start button, use the white light (#8404-CLL) to follow the EVAP system path, and look for the source of the leak as indicated by exiting smoke. If a leak is concealed from view (at the top of the fuel tank, for example), release the remote smoke/air start button, and use the ultraviolet (UV) black light #8404-UVL and the yellow goggles 8404-20 to look for residual traces of dye that is left behind by the smoke. The exiting smoke deposits a residual fluid that is either bright green or bright yellow when viewed with a UV light. Were any problems found? Yes Repair or replace the leaking component as necessary. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000) . No Go to step 4) .
4. 4) CHECKING THE GAS CAP AND FUEL FILLER TUBE Thoroughly check the gas cap and filler tube area for leaks. Was a leak found at the gas cap or filler tube? Yes Go to step 5) . No Go to step 6) .
5. 5) GAS CAP OR FUEL FILLER TUBE Remove the SMOKE supply tip (black hose) from the service port (if equipped) or from the #8404-ADP adapter. Install gas cap adapter, Miller Tool #8382 (1/4 turn cap) or #6922 (screw cap) and #8399* (secondary seal depressor) and repeat test 4. Was a leak found at the gas cap adapter? Yes Replace the fuel filler tube assembly. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000) . No Replace the gas cap. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000) .
6. 6) CHECKING FOR EVAPORATIVE SYSTEM LEAKS IN ZONE 1 NOTE: For testing purposes, the EVAP System is divided into three zones. A leak from any of these zones can cause a DTC to set. The lists in the following steps below specify possible leak points in one of the specific zones. Using the list below, check each of the components in Zone 1 of the evaporative system for leaks: 1 Fuel Cap. 2 Recirculation Check Valve. 3 Vapor Recirculation Line. 4 Signal Vapor Line for FVM. 5 Flow Management Valve. 6 Fuel Tank to Canister Vapor Line. 7 Fuel Tank Vent (Check Valve). 8 Vapor Line to Canister. 9 Flow Control Orifice. 10 Control Valve. 11 Liquid Trap. 12 Fuel Tank. 13 Check Valve. 14 Fuel Fill Tube to Tank connector. 15 Fuel Fill Tube. Damaged or disconnected components. Were any problems found? Yes Repair or replace the leaking component as necessary. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000) . No Go to step 7) .
7. 7) CHECKING FOR EVAPORATIVE SYSTEM LEAKS IN ZONE 2 NOTE: For testing purposes, the EVAP System is divided into three zones. A leak from any of these zones can cause a DTC to set. The lists in the following steps below specify possible leak points in one of the specific zones. Using the list below, check each of the components in Zone 2 of the evaporative system for leaks: 1 Filter. 2 ESM. 3 Canister Vent Line. 4 EVAP Canister. 5 Chassis Purge Valve. 6 Fuel Tank to Canister Vapor Line connection. 7 EVAP Purge connection. Were any problems found? Yes Repair or replace the leaking component as necessary. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000) . No Go to step 8) .
8. 8) CHECKING FOR EVAPORATIVE SYSTEM LEAKS IN ZONE 3 NOTE: For testing purposes, the EVAP System is divided into three zones. A leak from any of these zones can cause a DTC to set. The lists in the following steps below specify possible leak points in one of the specific zones. Using the list below, check each of the components in Zone 3 of the evaporative system for leaks: 1 EVAP Purge Vacuum Line. 2 Connection to Chassis Line. 3 Connection to Canister. 4 Chassis Purge Line. 5 EVAP Purge Vacuum Line. 6 Connection to EVAP Purge Harness. 7 Chassis EVAP Purge Line connection to Engine Vacuum. 8 EVAP Purge Valve. 9 Service Port. Were any problems found? Yes Repair or replace the leaking component as necessary. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000) . No Test complete.

*CHECKING THE FUEL DELIVERY SYSTEM

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for 300.

SYSTEM WIRING DIAGRAMS for Charger.

SYSTEM WIRING DIAGRAMS for Magnum.

*CHECKING THE TEMPERATURE SENSORS

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for 300.

SYSTEM WIRING DIAGRAMS for Charger.

SYSTEM WIRING DIAGRAMS for Magnum.

*ENGINE CRANKS BUT DOES NOT START

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for 300.

SYSTEM WIRING DIAGRAMS for Charger.

SYSTEM WIRING DIAGRAMS for Magnum.

*HARD START (FUEL SYSTEM)

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for 300.

SYSTEM WIRING DIAGRAMS for Charger.

SYSTEM WIRING DIAGRAMS for Magnum.

*INTERMITTENT NO CRANK CONDITION (ETC STARTER INHIBIT)

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for 300.

SYSTEM WIRING DIAGRAMS for Charger.

SYSTEM WIRING DIAGRAMS for Magnum.

*START AND STALL CONDITION

For complete wiring diagrams refer to

SYSTEM WIRING DIAGRAMS for 300.

SYSTEM WIRING DIAGRAMS for Charger.

SYSTEM WIRING DIAGRAMS for Magnum.

Scheme 571

Scheme 572

1. 1) CHECKING DTCS NOTE: Before continuing with this procedure, review the TSBs that may be related to a start and stall condition. NOTE: It may be helpful to review Secondary Indicators, if a two trip DTC(s) is present, drive the vehicle to try and mature the DTC to Active. Ignition on, engine not running. With a scan tool, read DTCs. Are any DTCs present? Yes Refer to the appropriate Diagnostic Procedure. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000). No Go To step 2).
2. 2) CHECKING VEHICLE THEFT DTCS NOTE: If you are unable to communicate with the SKIM/SKREEM, refer to the «VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS»(ref-304497) article and perform the appropriate diagnostics. With the scan tool, read the SKIM/SKREEM codes. Are there any SKIM/SKREEM DTCs? Yes Refer to the «VEHICLE THEFT SECURITY - ELECTRICAL DIAGNOSTICS»(ref-304497) article. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000). No Go To step 3).
3. 3) CAM/CRANK VERIFICATION Using a scan tool, under OBDII Monitors, read and record the Cam Crank Synchronization Event Monitors. CAM EVENT STATUS CM1ULTRH CM1ULTLH CM1TOL1 CM1LOW CM1ULZERO CM1MFS CM1MFR CM1IF CM1ONLY CM2ULTRH CM2ULTLH CM2TOL1 CM2LOW CM2ULZERO CM2MFS CM2MFR CM2IF CM2ONLY CM3ULTRH CM3ULTLH CM3TOL1 CM3LOW CM3ULZERO CM3MFS CM3MFR CM3IF CM3ONLY CM4ULTRH CM4ULTLH CM4TOL1 CM4LOW CM4ULZERO CM4MFS CM4MFR CM4IF CM4ONLY SYULCAM - - - - - CRANK EVENT STATUS CKULTRH CKULTLH CKLOW CKUL60M2 CKMFS CKMFR CK1IF CKULGTRH CKULGTLH CKULGTVR CKULGTVL CKUL220 CKUL40 SYULCRK SYNOCLCK - - - - - - SYNC EVENT STATUS SYULTOL SYTOLF - - - - - Use the table above and determine if any of the values are present in the Cam Crank Synchronization Event Monitor display. CAM EVENT STATUS ONLY Go To step 7). CRANK EVENT STATUS ONLY Go To step 14). CAM, CKP and/or SYNC EVENT STATUS Go To step 21. None Present Go To step 4).
4. 4) SPARK PLUG(S) NOTE: Inspect the ignition coil for damage, carbon tracking on the coil or a damaged spark plug insulator boot. If a problem is found, replace the ignition coil. Turn the ignition off. Remove the spark plug. Inspect the spark plug for any of the following conditions: - Cracks or damage - Carbon tracking - Foreign material - Gap not within specification - Loose or broken electrode NOTE: Lightly tap the bottom of the spark plug on a solid surface. The electrode in the spark plug should not move. Were any problems found? Yes Replace the spark plug. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000). No Go To step 5).
5. 5) POSSIBLE CAUSES OF START AND STALL CONDITION The following items should be checked as a possible cause for a start and stall condition. Refer to any Technical Service Bulletins (TSBs) that may apply to the symptom. The exhaust system must be free of any restrictions. The engine compression must be within specifications. The engine valve timing must be within specifications. The engine must be free from vacuum leaks. The throttle body must be free of carbon buildup and dirt. Cracked spark plugs, carbon track on spark plugs, coil and coil boot. Do any of the above conditions exist? Yes Repair as necessary. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000). No Go To step 6).
6. 6) FUEL PUMP DELIVERY Verify that the Fuel tank is not empty before continuing. Follow the diagnostics for «*CHECKING THE FUEL DELIVERY SYSTEM»(ref-304544-S11771868502008111000000). Was the No Start condition solved after following the above diagnostic test? Yes Test Complete. No Check for contamination/water in the fuel. Ensure the fuel being used in this vehicle meets OEM Fuel Requirement, refer to the «FUEL SYSTEM»(ref-304468) article. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000).
7. 7) 5 VOLT SUPPLY CIRCUIT VOLTAGE (CMP) Turn the ignition off. Disconnect the Camshaft Position Sensor connector. Turn the ignition on. Measure the voltage of the 5 Volt Supply circuit in the Camshaft Position Sensor harness connector. Is the voltage 5.0 volts? Yes Go to step 8). No Repair the 5 Volt Supply. NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000).
8. 8) SENSOR GROUND CIRCUIT TEST Turn the ignition off. Using a 12 volt test light connected to 12 volts, probe the Sensor Ground circuit in the Camshaft Position Sensor harness connector. NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go to step 9). No Repair the Ground Circuit NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000).
9. 9) CMP SIGNAL Turn the ignition on. Measure the voltage of the CMP Signal circuit in the Camshaft Position Sensor harness connector. Is the voltage between 4.7 and 5.0 volts? Yes Go to step 13). No Go to step 10).
10. 10) CMP SIGNAL CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Powertrain Control Module connector. Turn the ignition on. Measure the voltage of the CMP Signal circuit in the Camshaft Position Sensor harness connector. Is there any voltage present? Yes Repair the CMP Signal circuit for a short to voltage. NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000). No Go to step 11).
11. 11) CMP SIGNAL CIRCUIT SHORTED TO GROUND Turn the ignition off. Measure the resistance between ground and the CMP Signal circuit in the Camshaft Position Sensor harness connector. Is the resistance above 100 ohms? Yes Go to step 12). No Repair the CMP Signal circuit for a short to ground. NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000).
12. 12) CMP SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals, resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis. Measure the resistance of the CMP Signal circuit between the Camshaft Position Sensor harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go to step 24). No Repair the CMP Signal circuit for an open circuit or high resistance. NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000).
13. 13) CAMSHAFT POSITION SENSOR SIGNAL Turn the ignition off. see scheme 1 is a depiction of typical scope patterns of the Cam (1) and Crank (2) sensors for 4, 6, and 8 cylinder engines. The square wave patterns are uniform and are identical to one another. The patterns must be evenly spread apart and at the same height. The larger gap pattern (signature) after the shorter wave forms are used for cylinder identification (Crank signal) and the distance between the series of slots (trigger) on the camshaft pulley (cam signal). Any variation of the pattern will indicate an issue with the sensor, wiring, or trigger (target) wheel. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 along with the #8815-1 to perform the diagnosis. With a lab scope, probe the CMP Signal circuit in the appropriate terminal of the special tool #8815. WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death. Start and allow the engine to run. Observe the lab scope screen. Compare the scope pattern with the ones in see scheme 2. 1. Pattern indicates a clean (good) square wave form that is identical to what the cam and crank should be. The square wave patterns are uniformed and are identical to one another. 2. Two pulses joined together in the same spot on target. Indicates damage to the target (trigger) on the flex plate or broke tooth, runout in the target or large air gap between the sensor and the target wheel. 3. Wide air gap or intermittent connection. 4. Early signature, predominately at high speed. Large air gap between the sensor and the target wheel. 5. Missed pulse. Possible burr or light damage to target or incorrect lateral position of the crank sensor to target (trigger). NOTE: If any of the above (except pattern 1) is displayed on the lab scope repair as necessary. Was the square wave found to match any of the above except pattern 1? Yes Repair as necessary. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000). No Replace the Camshaft Position Sensors. NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000).
14. 14) 5 VOLT SUPPLY CIRCUIT VOLTAGE (CKP) Turn the ignition off. Disconnect the Crankshaft Position Sensor connector. Turn the ignition on. Measure the voltage of the 5 Volt Supply circuit in the Crankshaft Position Sensor harness connector. Is the voltage 5.0 volts? Yes Go to step 15). No Repair the 5 Volt Supply. NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000).
15. 15) SENSOR GROUND CIRCUIT TEST Turn the ignition off. Using a 12 volt test light connected to 12 volts, check the Sensor Ground circuit in the Crankshaft Position Sensor harness connector. NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Go to step 16). No Repair the Ground Circuit. NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000).
16. 16) CKP SIGNAL Turn the ignition on. Measure the voltage of the CKP Signal circuit in the Crankshaft Position Sensor harness connector. Is the voltage between 4.7 and 5.0 volts? Yes Go to step 20). No Go to step 17).
17. 17) CKP SIGNAL CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the Powertrain Control Module (PCM) connector. Turn the ignition on. Measure the voltage of the CKP Signal circuit in the Crankshaft Position Sensor harness connector. Is there any voltage present? Yes Repair the CKP Signal circuit for a short to voltage. NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000). No Go to step 18).
18. 18) CKP SIGNAL CIRCUIT SHORTED TO GROUND Turn the ignition off. Measure the resistance between ground and the CKP Signal circuit in the Crankshaft Position Sensor harness connector. Is the resistance above 100 ohms? Yes Go to step 19). No Repair the CMP Signal circuit for a short to ground. NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000).
19. 19) CKP SIGNAL CIRCUIT OPEN OR HIGH RESISTANCE CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals, resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis. Measure the resistance of the CKP Signal circuit between the Camshaft Position Sensor harness connector and the appropriate terminal of special tool #8815. Is the resistance below 5.0 ohms? Yes Go to step 24). No Repair the CMP Signal circuit for an open circuit or high resistance. NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000).
20. 20) CRANKSHAFT POSITION SENSOR SIGNAL Turn the ignition off. see scheme 1 is a depiction of typical scope patterns of the Cam (1) and Crank (2) sensors for 4, 6, and 8 cylinder engines. The square wave patterns are uniform and are identical to one another. The patterns must be evenly spread apart and at the same height. The larger gap pattern (signature) after the shorter wave forms are used for cylinder identification (Crank signal) and the distance between the series of slots (trigger) on the camshaft pulley (cam signal). Any variation of the pattern will indicate an issue with the sensor, wiring, and trigger (target) wheel. CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 along with the #8815-1 to perform the diagnosis. With a lab scope, probe the CKP Signal circuit in the appropriate terminal of the special tool #8815. WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death. Start and allow the engine to run. Observe the lab scope screen. Compare the scope pattern with the ones in see scheme 2. 1. Pattern indicates a clean (good) square wave form that is identical to what the cam and crank should be. The square wave patterns are uniformed and are identical to one another. 2. Two pulses joined together in the same spot on target. Indicates damage to the target (trigger) on the flex plate or broke tooth, runout in the target or large air gap between the sensor and the target wheel. 3. Wide air gap or intermittent connection. 4. Early signature, predominately at high speed. Large air gap between the sensor and the target wheel. 5. Missed pulse. Possible burr or light damage to target or incorrect lateral position of the crank sensor to target (trigger). NOTE: If any of the above (except pattern 1) is displayed on the lab scope repair as necessary. Was the square wave found to match any of the above except pattern 1? Yes Repair as necessary. NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000). No Replace the Crankshaft Position Sensor. NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000).
21. 21) VALVE TIMING Ensure the valve timing is within specification. Refer to VALVE TIMING in appropriate engine SERVICE INFORMATION article. Was the valve timing within specification? Yes Go to step 22). No Repair as necessary. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000).
22. 22) 5 VOLT SUPPLY CIRCUIT VOLTAGE (CMP/CKP) NOTE: The 5 Volt Supply circuit must be present at both CMP and CKP Sensors. Turn the ignition off. Disconnect the Camshaft Position Sensor connector. Turn the ignition on. Measure the voltage of the 5 Volt Supply circuit in the Camshaft Position Sensor harness connector. Repeat the above test at the Crankshaft Position Sensor (Crankshaft Position Sensor harness connector measure). Is the voltage 5.0 volts at each sensor? Yes Go to step 23). No Repair the 5 Volt Supply circuit(s) as necessary. NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000).
23. 23) SENSOR GROUND CIRCUIT NOTE: The Ground circuit must be present at both CMP and CKP Sensors. Turn the ignition off. Using a 12 volt test light connected to 12 volts, probe the Sensor Ground circuit in the Camshaft Position Sensor harness connector. Repeat the above test at the Crankshaft Position Sensor (Crankshaft Position Sensor harness connector measure). NOTE: The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery. Is the test light illuminated and bright? Yes Replace both the Camshaft Position Sensor and Crankshaft Position Sensor in accordance with the Service Information. NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000). No Repair the Ground Circuit(s) as necessary. NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000).
24. 24) POWERTRAIN CONTROL MODULE (PCM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Camshaft Position Sensor and the Powertrain Control Module (PCM). Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors. Look for the data to change or for the DTC to reset during the wiggle test. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes Repair as necessary. NOTE: A battery disconnect must be performed to clear the Cam Crank Synchronization Events. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000). No Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Perform «*PCM VERIFICATION TEST»(ref-304545-S42850134272008111000000).