2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum IGNITION SYSTEM - SERVICE INFORMATION DESCRIPTION IGNITION SYSTEM The ignition system used on these engines is referred to as the Direct Ignition System (DIS). The system's three main components are the coils, crankshaft position sensor, and camshaft position sensor. If equipped with the coil on plug ignition system it utilizes an ignition coil for every cylinder, it is mounted directly over each spark plug. OPERATION IGNITION SYSTEM The crankshaft position sensor and camshaft position sensor are hall effect devices. The camshaft position sensor and crankshaft position sensor generate pulses that are inputs to the PCM. The PCM determines engine position from these sensors. The PCM calculates injector sequence and ignition timing from crankshaft & camshaft position. SPECIFICATIONS TORQUE TORQUE SPECIFICATIONS NOTE: All engines use a fixed ignition timing system. Basic ignition timing is not adjustable. All spark advance is determined by the Powertrain Control Module (PCM). DESCRIPTION N.m Ft. Lbs. In. Lbs. Camshaft Position Sensor - 2.7L 12 - 105 Camshaft Position Sensor - 3.5L 12 - 105 Camshaft Position Sensor - 5.7L V8 Engine 12 9 105 Crankshaft Position Sensor - 2.7L 12 - 105 Crankshaft Position Sensor - 3.5L 12 - 105 Crankshaft Position Sensor - 5.7L V8 Engine 12 9 105 Ignition Coil Mounting - 2.7L 6 - 55 Ignition Coil Mounting - 3.5L 7 - 60 Ignition Coil Mounting - 5.7L V8 Engine 12 9 105 (± 20) 2007 Chrysler 300 SRT-8 2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
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2007 ENGINE
Ignition System - Service Information - 300, Charger & Magnum
IGNITION SYSTEM - SERVICE INFORMATION
DESCRIPTION
IGNITION SYSTEM
The ignition system used on these engines is referred to as the Direct Ignition System (DIS). The system's three main components are the coils, crankshaft position sensor, and camshaft position sensor. If equipped with the coil on plug ignition system it utilizes an ignition coil for every cylinder, it is mounted directly over each spark plug.
OPERATION
IGNITION SYSTEM
The crankshaft position sensor and camshaft position sensor are hall effect devices. The camshaft position sensor and crankshaft position sensor generate pulses that are inputs to the PCM. The PCM determines engine position from these sensors. The PCM calculates injector sequence and ignition timing from crankshaft & camshaft position.
SPECIFICATIONS
TORQUE
TORQUE SPECIFICATIONS
NOTE: All engines use a fixed ignition timing system. Basic ignition timing is not adjustable. All spark advance is determined by the Powertrain Control Module (PCM).
DESCRIPTION N.m Ft. Lbs. In. Lbs.Camshaft Position Sensor - 2.7L 12 - 105Camshaft Position Sensor - 3.5L 12 - 105Camshaft Position Sensor - 5.7L V8 Engine
12 9 105
Crankshaft Position Sensor - 2.7L 12 - 105Crankshaft Position Sensor - 3.5L 12 - 105Crankshaft Position Sensor - 5.7L V8 Engine
Fig. 13: Camshaft Position Sensor - 5.7L Courtesy of CHRYSLER LLC
1. Clean out machined hole in timing chain cover.
2. Apply a small amount of engine oil to sensor O-ring.
3. Install sensor (1) into timing chain cover (2) with a slight rocking action. Do not twist sensor into position as damage to O-ring may result.
4. Install mounting bolt (3) and tighten to 12 N.m (105 in. lbs.)
5. Connect electrical connector (4) to sensor.
CAMSHAFT POSITION SENSOR - 6.1L
CAUTION: Before tightening sensor mounting bolt, be sure sensor is completely flush to timing chain cover. If sensor is not flush, damage to sensor mounting tang may result.
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
Fig. 14: Camshaft Position Sensor - 6.1L Courtesy of CHRYSLER LLC
1. Clean out machined hole in timing chain cover.
2. Apply a small amount of engine oil to sensor O-ring.
3. Install sensor (1) into timing chain cover (2) with a slight rocking action. Do not twist sensor into position as damage to O-ring may result.
4. Install mounting bolt (3) and tighten to 12 N.m (105 in. lbs.)
5. Connect electrical connector (4) to sensor.
COIL - IGNITION
REMOVAL
CAUTION: Before tightening sensor mounting bolt, be sure sensor is completely flush to timing chain cover. If sensor is not flush, damage to sensor mounting tang may result.
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
Fig. 19: Ignition Coil Location - 6.1L Courtesy of CHRYSLER LLC
A separate ignition coil (1), mounted to the valve cover is used for each cylinder. Each coil fires the two spark plugs at times predetermined by the Powertrain Control Module (PCM).
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
Fig. 24: Removing/Installing Ignition Coil Courtesy of CHRYSLER LLC
On 3.5L engines, it is necessary to tighten the screws by alternating back and forth. Do not lose the spacers under the coil when installing ignition coils.
1. Install ignition coil assembly to spark plug.
2. Install coil screws and tighten 3.5L engines to 7 N.m (60 in. lbs.).
3. Connect the electrical connector and lock.
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
Fig. 31: Capacitor - 6.1L Courtesy of CHRYSLER LLC
1. Install ignition capacitor (2) to engine.
2. Install mounting bolt.
3. Install electrical connector (1).
SWITCH - IGNITION
REMOVAL
IGNITION SWITCH
The ignition switch attaches to the lock cylinder housing on the end opposite the lock cylinder. For ignition switch terminal and circuit identification, refer to appropriate SYSTEM WIRING DIAGRAMS .
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
The ignition switch attaches to the lock cylinder housing on the end opposite the lock cylinder. For ignition switch terminal and circuit identification, refer to SYSTEM WIRING DIAGRAMS .
Fig. 45: Ignition Switch Assembly Courtesy of CHRYSLER LLC
1. A tab on the ignition switch indexes to a notch in the lock cylinder housing. Also, a slot in the end of the ignition switch fits over the shaft in the end of the lock cylinder housing. Use the ignition key to rotate the lock cylinder to align the ignition switch with lock cylinder housing. Insert ignition switch into lock housing until locking tabs are seated into openings on lock housing.
Fig. 61: Removing/Installing Key Cylinder Courtesy of CHRYSLER LLC
1. Install key in lock cylinder. Turn key to "ON" position (retaining tab on lock cylinder can be depressed).
2. The shaft at the end of the lock cylinder aligns with the socket in the end of the housing. To align the socket with the lock cylinder, ensure the socket is in the "ON" position.
3. Align the lock cylinder with the grooves in the housing. Slide the lock cylinder into the housing until the tab sticks through the opening in the housing.
1 - Locking Tab Location
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
3. Remove sensor mounting bolt (2). Note foam strip on bolt threads. This foam is used only to retain the bolts to sensors for plant assembly. It is not used as a sealant. Do not apply any adhesive, sealant or thread locking compound to these bolts.
4. Remove sensor from engine.
KNOCK SENSOR - 6.1L
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
4. Remove sensor mounting bolt (2). Note foam strip on bolt threads. This foam is used only to retain the bolts to sensors for plant assembly. It is not used as a sealant. Do not apply any adhesive, sealant or thread locking compound to these bolts.
5. Remove sensor from engine.
INSTALLATION
KNOCK SENSOR - 2.7L
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
Fig. 71: Locating Knock Sensor - 2.7L Courtesy of CHRYSLER LLC
The sensors screws into the cylinder block, directly below the intake manifold.
1. Install knock sensor. Tighten knock sensor to 10 N.m (7 ft. lbs.) torque. Over or under tightening effects knock sensor performance resulting in possible improper spark control.
2. Attach electrical connector to knock sensor.
3. Install the passenger side cylinder head. Refer to INSTALLATION .
4. Install intake manifold. Refer to INSTALLATION .
5. Connect negative battery cable.
KNOCK SENSOR - 3.5L
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
Fig. 75: Locating Knock Sensor - 5.7L Courtesy of CHRYSLER LLC
1. Thoroughly clean knock sensor mounting hole.
2. Install sensor (1) into cylinder block.
NOTE: Over or under tightening the sensor mounting bolts will affect knock sensor performance, possibly causing improper spark control. Always use the specified torque when installing the knock sensors. The torque for the knock sensor bolt is relatively light for an 8mm bolt.
NOTE: The foam strip used on bolt threads is used only to retain the bolts to
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
3. Install and tighten mounting bolt (2) to 20 N.m (15 ft. lbs.) torque.
4. Install electrical connector (5) to sensor.
Fig. 77: Knock Sensor Heat Shield - 6.1L Courtesy of CHRYSLER LLC
NOTE: Over or under tightening the sensor mounting bolts will affect knock sensor performance, possibly causing improper spark control. Always use the specified torque when installing the knock sensors. The torque for the knock sensor bolt is relatively light for an 8mm bolt.
NOTE: The foam strip used on bolt threads is used only to retain the bolts to sensors for plant assembly. It is not used as a sealant. Do not apply any adhesive, sealant or thread locking compound to these bolts.
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
5. Install heat shield (1) to sensor (shield snaps on).
PLUG - GLOW
DESCRIPTION
GLOW PLUG
Fig. 78: Glow Plug Courtesy of CHRYSLER LLC
Glow plugs are used to help start a cold or cool engine. See Fig. 78. The glow plugs will heat up and glow to heat the combustion chamber of each cylinder. An individual glow plug is used for each cylinder. Each glow plug is threaded into the side of the cylinder head below the cylinder head cover.
OPERATION
GLOW PLUG
The glow plugs are used to preheat the combustion chambers in order to achieve the ignition temperature required for the fuel-air mixture.
The glow plug consists of a housing with a female thread and an interference-fit rod. The heating element is integrated in the glow rod. It consists of a heating winding and a control winding connected in series.
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
When the glow plug system is switched "ON", a current of about 30 ampere flows to each glow plug. The heating winding heats the glow plug. The control winding increases its resistance as the temperature rises and limits the current to approximately 15-25 ampere. The glow plug is protected this way from overloads.
The V6 engines use platinum resistor spark plugs. They have resistance values of 6,000 to 20,000 ohms when checked with at least a 1000 volt tester. For spark plug identification and specifications, Refer to the Specifications section.
Do not use an ohmmeter to check the resistance of the spark plugs. This will give an inaccurate reading.
When the spark plugs use a single or double platinum tips and they have a recommended service life of 100,000 miles for normal driving conditions per schedule A in this manual. The spark plugs have a recommended
CAUTION: Engine temperature must be at least 90°C (194°F) before removing glow plugs. If cylinder head is already removed, warm cylinder head to 90°C (194°F) before removing glow plugs.
WARNING: Risk of injury to skin and eyes from handling hot or glowing objects. Wear protective gloves, clothing and eye wear.
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
service life of 75,000 miles for severe driving conditions per schedule B in this manual. A thin platinum pad is welded to both or just the center electrode end(s). See Fig. 79. Extreme care must be used to prevent spark plug cross threading, mis-gapping and ceramic insulator damage during plug removal and installation. See Fig. 80.
Fig. 81: Removing/Installing Ignition Coil Courtesy of CHRYSLER LLC
Always remove the ignition coil assembly by grasping at the spark plug boot, turning the assembly 1/2 turn and pulling straight back in a steady motion.
1. Disconnect the negative battery cable.
2. Remove the intake manifold. Refer to REMOVAL .
3. Prior to removing the ignition coils, spray compressed air around the coil area and spark plug to remove contaminates from around spark plug tube.
1 - TAPER GAUGE
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
On 3.5L engines, it is necessary to loosen the screws by alternating back and forth. Do not lose the spacers under the coil when loosening the screws.
4. Remove the ignition coils.
5. Remove the spark plug using a quality socket with a rubber or foam insert.
6. Inspect the spark plug condition.
SPARK PLUG - 3.5L
Fig. 82: Removing/Installing Ignition Coil Courtesy of CHRYSLER LLC
Always remove the ignition coil assembly by grasping at the spark plug boot, turning the assembly 1/2 turn and pulling straight back in a steady motion.
1. Disconnect the negative battery cable.
2. Remove the intake manifold. Refer to REMOVAL .
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
3. Prior to removing the ignition coils, spray compressed air around the coil area and spark plug to remove contaminates from around spark plug tube.
On 3.5L engines, it is necessary to loosen the screws by alternating back and forth. Do not lose the spacers under the coil when loosening the screws.
4. Remove the ignitions coil.
5. Remove the spark plug using a quality socket with a rubber or foam insert.
6. Inspect the spark plug condition.
SPARK PLUG - 5.7L/6.1L
Each individual spark plug is located under each ignition coil. Each individual ignition coil must be removed to gain access to each spark plug. Refer to IGNITION COIL - 5.7/6.1L.
1. Remove necessary air filter tubing at throttle body.
2. Prior to removing ignition coil, spray compressed air around coil base at cylinder head.
3. Prior to removing spark plug, spray compressed air into cylinder head opening. This will help prevent foreign material from entering combustion chamber.
4. Remove spark plug from cylinder head using a quality socket with a rubber or foam insert. Also check condition of ignition coil O-ring and replace as necessary.
5. Inspect spark plug condition.
INSTALLATION
SPARK PLUG - 2.7L
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
5. Tighten ignition coil screws to 6.7 N.m (60 in. lbs.).
6. Connect and lock the electrical connector.
7. Install the intake manifold. Refer to INSTALLATION .
8. Connect the negative battery cable.
SPARK PLUG - 5.7L/6.1L
Special care should be taken when installing spark plugs into the cylinder head spark plug wells. Be sure the plugs do not drop into the plug wells as electrodes can be damaged.
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum
Always tighten spark plugs to the specified torque. Over tightening can cause distortion resulting in a change in the spark plug gap or a cracked porcelain insulator.
1. Start the spark plug into the cylinder head by hand to avoid cross threading.
2. Tighten 5.7L spark plugs to 18 N.m (13 ft. lbs.) torque. Tighten 6.1L spark plugs to 15-20 N.m (11-15 ft. lbs.) torque.
3. Before installing ignition coil(s), check condition of coil O-ring and replace as necessary. To aid in coil installation, apply silicone to coil O-ring.
4. Install ignition coil(s). Refer to IGNITION COIL - 5.7/6.1L.
2007 Chrysler 300 SRT-8
2007 ENGINE Ignition System - Service Information - 300, Charger & Magnum