Ignition Control - Service Information: Other Dodge Dakota III рестайлинг

ENGINE FIRING ORDER - 3.7L V-6

1 - 6 - 5 - 4 - 3 - 2

Scheme 9

SPARK PLUGS

IGNITION COIL RESISTANCE - 3.7L V-6

IGNITION COIL RESISTANCE - 4.7L V-8

IGNITION TIMING

Ignition timing is not adjustable on any engine.

Scheme 10

1. Depending on which coil is being removed, the throttle body air intake tube or intake box may need to be removed to gain access to coil.
2. Disconnect coil electrical connector(s).
3. Clean area at base of coil with compressed air before removal.
4. Remove coil mounting bolt (3).
5. Disconnect spark plug wire (1) from coil (2).
6. Carefully pull up coil (2) from cylinder head opening with a slight twisting action.
7. Remove coil from vehicle.

Scheme 11

An individual ignition coil (1) is used for each pair of spark plugs. Each coil attaches directly to the top of the eight upper bank of spark plugs. Secondary cables (3) connect each coil to the eight lower bank of spark plugs. The coils themselves fit into machined holes in the cylinder head. Each coil also has its own individual electrical connector (2).

Note. The bolt used to mount the ignition coil assembly is the same bolt used to mount the intake manifold. If replacing either one or all eight coils, check and re-torque all eight bolts.

A mounting bolt (3) secures each coil assembly to the top of the intake manifold. The bottom of the coil assembly is equipped with a rubber boot (4) to seal the spark plug (5) to the coil. Inside each rubber boot is a spring. The spring is used for a mechanical contact between the coil and the top of the upper bank of spark plugs. These rubber boots and springs are a permanent part of the coil assembly and are not serviced separately. The rubber boot (4) is also used to seal the coil at the opening into the cylinder head.

1. Depending on which coil assembly is being removed, the throttle body air intake tube or intake box may need to be removed, to gain access to the coil.
2. Disconnect the electrical connector (2) from the coil assembly by pushing downward on the release lock on the top of the connector and pull connector from the coil.
3. Disconnect the secondary cable (3) at the coil assembly.
4. Clean the area at the base of the coil assembly with compressed air before removal.
5. Remove the coil assembly mounting bolt (3).
6. Carefully pull up the coil assembly (2) from the cylinder head opening with a slight twisting action. This helps to disengage the rubber boot (4) from the spark plug (5).
7. Remove the coil assembly from the engine.

3.7L

1. Using compressed air, blow out any dirt or contaminants from around top of spark plug.
2. Check condition of coil o-ring and replace as necessary. To aid in coil installation, apply silicone to coil o-ring.
3. Position ignition coil (2) into cylinder head opening and push onto spark plug.
4. Tighten coil mounting bolt to 12 N.m (106 in.lbs).
5. Connect coil electrical connector.
6. Connect spark plug wires.
7. If necessary, install throttle body air tube.

4.7L

1. Using compressed air, blow out any dirt or contaminants from around the top of the spark plug.
2. Check the condition of the coil rubber boot (4). To aid in coil installation, apply silicone based grease such as Mopar® Dielectric Grease # J8126688 into the spark plug end of the rubber boot (4) and to the top of the spark plug (5).
3. Position the ignition coil assembly into the cylinder head opening. Using a twisting action, push the ignition coil assembly onto the spark plug. NOTE: Note: The bolt used to mount the ignition coil assembly is also the same bolt used to mount the intake manifold. If replacing either one or all eight coils, check and re-torque all eight bolts.
4. Tighten the coil assembly mounting bolt (3) to 12 N.m (9 ft. lbs.).
5. Connect the electrical connector (2) to the coil assembly by snapping into position.
6. Connect the secondary cable (3) to the coil assembly (1).
7. If necessary, install the throttle body air intake tube or intake air box to the top of the engine.

Scheme 12

The ignition key (1) must be in the key cylinder (2) for cylinder removal.

Scheme 13

1. Disconnect negative cable from battery.
2. Remove upper and lower covers (shrouds) from steering column.
3. Place shifter in PARK position. 1 - KEY CYLINDER 2 - PUNCH
4. A retaining pin is located at side of key cylinder assembly (2). (Scheme 13)Rotate key to RUN position. Press in on retaining pin while pulling key cylinder (1) from ignition switch.

Scheme 14

The ignition key (1) must be in the key cylinder (2) for cylinder installation.

1. Install the key cylinder into the housing using care to align the end of the key cylinder (2) with the ignition switch.
2. Push the key cylinder (2) in until it clicks.
3. Replace the upper and lower shrouds.
4. Reconnect the battery.

PCM OUTPUT

The ASD relay supplies battery voltage (12+ volts) to the fuel injectors and ignition coil(s). With certain emissions packages it also supplies 12-volts to the oxygen sensor heating elements.

The ground circuit for the coil within the ASD relay is controlled by the Powertrain Control Module (PCM). The PCM operates the ASD relay by switching its ground circuit on and off.

The ASD relay will be shut-down, meaning the 12-volt power supply to the ASD relay will be de-activated by the PCM if

1. the ignition key is left in the ON position. This is if the engine has not been running for approximately 1.8 seconds.
2. there is a crankshaft position sensor signal to the PCM that is lower than pre-determined values.

ASD SENSE - PCM INPUT

A 12 volt signal at this input indicates to the PCM that the ASD has been activated. The relay is used to connect the oxygen sensor heater element, ignition coil and fuel injectors to 12 volt + power supply.

This input is used only to sense that the ASD relay is energized. If the Powertrain Control Module (PCM) does not see 12 volts at this input when the ASD should be activated, it will set a Diagnostic Trouble Code (DTC).

1. Clean out machined hole in cylinder head.
2. Apply a small amount of engine oil to sensor o-ring.
3. Install sensor (3) into cylinder head with a slight rocking and twisting action. CAUTION: Before tightening sensor mounting bolt (2), be sure sensor is completely flush to cylinder head. If sensor is not flush, damage to sensor mounting tang may result.
4. Install mounting bolt (2) and tighten to 12 N.m (106 in.lbs).
5. Connect electrical connector to sensor.

1. Clean out machined hole in cylinder head.
2. Apply a small amount of engine oil to sensor o-ring.
3. Install sensor (2) into cylinder head with a slight rocking action. Do not twist sensor into position as damage to o-ring may result. CAUTION: Before tightening sensor mounting bolt (3), be sure sensor is completely flush to cylinder head. If sensor is not flush, damage to sensor mounting tang may result.
4. Install mounting bolt (3) and tighten to 12 N.m (106 in.lbs).
5. Connect electrical connector (4) to sensor.

Scheme 15

3.7L - Two knock sensors (1) are bolted to the cylinder block under the intake manifold.

Scheme 16

4.7L - One knock sensor (1) is bolted to the cylinder block under the intake manifold.

Scheme 17

5.7L - Two knock sensors (1) are bolted to each side of the cylinder block (outside) under each exhaust manifold (3).

The two knock sensors (1) are bolted into the cylinder block under the intake manifold. The two sensors share a common wiring harness using one electrical connector (3). Because of this, they must be replaced as a pair.

Note. The left sensor is identified by an identification tag (LEFT) (2). It is also identified by a larger bolt head. The Powertrain Control Module (PCM) must have and know the correct sensor left/right positions. Do not mix the sensor locations.

1. Remove intake manifold. Refer to «Engine/Manifolds/MANIFOLD, Intake - Installation»(ref-352641-S03073431092010010600000) .
2. Disconnect knock sensor dual pigtail harness from engine wiring harness. This connection is made near rear of engine.
3. Remove both sensor mounting bolts. 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 sensors from engine.

Scheme 18

1. Remove the intake manifold. Refer to «Engine/Manifolds/MANIFOLD, Intake - Removal»(ref-352641-S18851709332010010600000)
2. Remove the knock sensor bolt.
3. Remove the knock sensor (1).
4. Disconnect the knock sensor wiring harness to the engine harness (1) at the rear of the intake manifold by pressing on lock tab (2).
5. Thoroughly clean the knock sensor mounting hole.

Note. The left sensor is identified by an identification tag (LEFT) (2). It is also identified by a larger bolt head. The Powertrain Control Module (PCM) must have and know the correct sensor left/right positions. Do not mix the sensor locations.

1. Thoroughly clean knock sensor mounting holes.
2. Install sensors (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 senor bolt is relatively light for an 8 mm bolt. NOTE: 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.
3. Install and tighten mounting bolts. Tighten to 15 +/- 2 ft.lbs. (20 N.m) (176 in.lbs).
4. Connect knock sensor wiring harness to engine harness at rear of intake manifold.
5. Install intake manifold. Refer to «Engine/Manifolds/MANIFOLD, Intake - Installation»(ref-352641-S03073431092010010600000) .

1. Thoroughly clean knock sensor mounting hole.
2. Postion knock sensor (1) in place. 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. NOTE: 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.
3. Tighten knock sensor to 20 N.m (176 in.lbs.).
4. Connect knock sensor wiring harness to engine harness (4) at rear of intake manifold.
5. Install intake manifold. Refer to «Engine/Manifolds/MANIFOLD, Intake - Installation»(ref-352641-S03073431092010010600000)

Scheme 19

1. Remove the necessary air filter tubing and air intake components at the top of the engine at the throttle body. NOTE: The three spark plugs located on the left bank of the engine are under three individual ignition coils (1). Each individual ignition coil must be removed to gain access to each spark plug located on the left bank of the engine.
2. Prior to removing the ignition coil, spray compressed air around the coil base at the cylinder head.
3. Remove the ignition coil (1). See «Electrical - Ignition Control/Ignition Control/COIL, Ignition - Removal»(ref-352658-S23423916722010010600000) check the condition of ignition coil O-ring and replace as necessary.
4. Prior to removing the spark plug, spray compressed air into the cylinder head opening. This will help prevent foreign material from entering combustion chamber.
5. Remove the spark plug from the cylinder head using a quality thin wall socket with a rubber or foam insert.
6. Inspect the spark plug condition.

1. Remove necessary air filter tubing and air intake components at top of engine and at throttle body. NOTE: To remove the upper row of spark plugs (5), each individual ignition coil (2) must be removed first.
2. Remove the ignition coil(s). See «Electrical - Ignition Control/Ignition Control/COIL, Ignition - Removal»(ref-352658-S23423916722010010600000)
3. Prior to removing the spark plug(s), spray compressed air into cylinder head opening. This will help prevent foreign material from entering combustion chamber. CAUTION: Due to tight clearances between UPPER row of plugs (5) and cylinder head, a conventional deep, thick-wall spark plug socket will not fit. Use a deep, THIN-WALL 5/8" spark plug socket for plug removal and installation. CAUTION: Do not attempt to clean any of the spark plugs. Replace only.
4. Remove the spark plug(s) and inspect their condition.

Scheme 20

1. Check and adjust the spark plug gap with a gap gauging tool (1). See «Electrical - Ignition Control/Ignition Control - Specifications»(ref-352658-S18070338412010010600000)
2. Start the spark plug into the cylinder head by hand to avoid cross threading.
3. Tighten the spark plugs to 27 N.m (20 ft. lbs.).
4. Before installing the ignition coil (1), check the condition of the coil O-ring and replace as necessary. Apply silicone based grease such as Mopar® Dielectric Grease into the spark plug end of the rubber boot, coil O-rings and to the top of spark plugs.
5. Install the ignition coil (1). See «Electrical - Ignition Control/Ignition Control/COIL, Ignition - Installation»(ref-352658-S39579748642010010600000)
6. Install all the necessary air filter tubing and air intake components at the top of the engine and at the throttle body.

1. To aid in coil installation, apply silicone based grease such as Mopar® Dielectric Grease into spark plug end of rubber boots (4) and (7). Also apply this grease to the tops of spark plugs (5) and (6).
2. Check and adjust spark plug gap(s) with a plug gap gauging tool (1). See «Electrical - Ignition Control/Ignition Control - Specifications»(ref-352658-S18070338412010010600000) .
3. Using special care install spark plug(s) into the cylinder head by hand to avoid cross threading.
4. Tighten spark plug(s) to the specified torque. See «Electrical - Ignition Control/Ignition Control - Specifications»(ref-352658-S18070338412010010600000) .
5. Install ignition coil(s). See «Electrical - Ignition Control/Ignition Control/COIL, Ignition - Installation»(ref-352658-S39579748642010010600000) .
6. Install necessary air filter tubing and air intake components to top of engine and to throttle body.

Scheme 21

The ignition switch (5) is located on the steering column (4). It is used as the main on/off switching device for most electrical components. The mechanical key cylinder is used to engage/disengage the electrical ignition switch.

SERVICE PRECAUTIONS

Scheme 22

Note. Safety goggles should be worn at all times when working on steering columns. The steering column on vehicles equipped with an automatic transmission is not equipped with an internal locking shaft with the ignition cylinder. Alternative methods of locking the steering wheel for service will have to be used. The tilt and standard column (4) have been designed to be serviced as an assembly; without wiring, switches, shrouds, steering wheel, etc. Most steering column components can be serviced without removing the steering column from the vehicle. To service the steering wheel, switches or airbag, Refer to SERVICE INFORMATION and follow all WARNINGS and CAUTIONS.

Scheme 23

Note. The ignition key must be in the key cylinder for cylinder removal. The key cylinder must be removed first before removing ignition switch.

Scheme 24

Scheme 25

1. Remove the negative (ground) cable from the battery.
2. Disable the airbag. Refer to «Restraints/AIR BAG, Driver - Removal»(ref-352646-S25458019992010010600000) .
3. Remove the lower and upper shrouds.
4. Remove key cylinder. Refer to «Steering/Column/CYLINDER, Ignition Lock - Removal»(ref-352627-S19933591012010010600000) .
5. Disconnect the lower clockspring connectors.
6. Remove the wire retainer from the tilt lever bracket.
7. Remove the tilt lever mounting screws to gain access to the ignition switch (1) mounting screws. 1 - Ignition Switch Mounting Screws 2 - Non-Tilt Mounting Bracket Screws
8. For columns without tilt remove the bracket (2) to gain access to the ignition switch mounting screws (1). 1 - Ignition Switch 2 - Ignition Switch Mounting Screws
9. Disconnect the electrical connector at rear of ignition switch (1).
10. Remove ignition switch mounting screws (2).
11. Using a small screwdriver, push on locking tab and remove switch from steering column.