SsangYong Stavic / SsangYong Rodius (2005 year). Service manual - part 42

1F-8

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ENGINE CONTROLS

M162 GSL ENG SM - 2005.7

This ignition system does not use a conventional dis-
tributor and coil. It uses a crankshaft position sensor in-
put to the Engine Control Module (ECM). The ECM then
determines Electronic Spark Timing (EST) and triggers
the electronic ignition system ignition coil.

This type of distributorless ignition system uses a “waste
spark” method of spark distribution. Each cylinder is paired
with the cylinder that is opposite it (1-6 or 2-5 or 3-4). The
spark occurs simultaneously in the cylinder coming upon
the compression stroke and in the cylinder coming up on
the exhaust stroke. The cylinder on the exhaust stroke
requires very little of the available energy tofire the spark
plug. The remaining energy is available to the spark plug
in the cylinder on the compression stroke.

These systems use the EST signal from the ECM to con-
trol the EST. The ECM uses the following information:

• Engine load (mass air flow sensor).

• Engine temperature.

• Intake air temperature.

• Crankshaft position.

• Engine speed (rpm).

IGNITION SYSTEM

1F-9

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ENGINE CONTROLS

M162 GSL ENG SM - 2005.7

IGNITION COIL

The Electronic Ignition (EI) system ignition coil is located on the cylinder head cover. The double ended coils receive the
signal for the Engine Control Module (ECM) which controls the spark advance.

Each EI system ignition coil provides the high voltage to two spark plugs simultaneously;

T1/1: cylinder 2 and 5

T1/2: cylinder 3 and 4

T1/3: cylinder 1 and 6

The EI system ignition coil is not serviceable and must be replaced as an assembly.

1. Control cable connection

2. Ignition cable

3. Spark plug connector

4. Coupling plug

5a, 5b. Secondary voltage connection

E. Iron core

L1. Secondary ignition coil

L2. Primary ignition coil

1F-10

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ENGINE CONTROLS

M162 GSL ENG SM - 2005.7

64

65

66

Failure Code

Description

Trouble Area

Maintenance Hint

No ignition voltage

output

(No. 1 ignition coil)

No ignition voltage

output

(No. 2 ignition coil)

No ignition voltage

output

(No. 3 ignition coil)

Malfunction of ignition

circuit Primary current

values or secondary

short circuit

• Inspection the ECM pin 70 (71 and 72)

about short circuit or open with bad
contact

• Inspection the power source to ignition

• Inspection the power source to ignition coil

• Inspection the ignition coil, high tension

cords etc.

• Inspection the spark plug (wet, cracks,

wear, improper gap, burned electrodes,
heavy deposit)

• Inspection the ECM

Circuit Description

The Electronic Ignition (EI) system uses a waste spark method of spark distribution. The Crankshaft Position (CKP)
sensor sends reference pulses to the ECM. The ECM then triggers the EI system ignition coils. Once the ECM triggers
the EI system ignition coils both of the connected spark plugs fire at the same time. One cylinder is on its compression
stroke at the same time that the other is on the exhaust stroke, resulting in lower energy needed to fire the spark plugin
the cylinder on its exhaust stroke.

This leaves there remainder of the high voltage to be used to fire the spark plug in the cylinder on its compression stroke.

Since the CKP sensor is in a fixed position, timing adjustments are not possible or needed.

1F-11

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AFFECTED VIN

ENGINE CONTROLS

M162 GSL ENG SM - 2005.7

CRANKSHAFT POSITION (CKP) SENSOR

1. Crankshaft position sensor

2. Bolt

3. Segment

4. Flywheel

This Electronic Ignition (EI) system uses inductive or pick up type magnetic Crankshaft Position (CKP) sensor. The
CKP sensor is located in the opposite side of the crankshaft pulley and triggers the pick-up wheel teeth which is
equipped 60 - 2 teeth with a gap of 2 teeth at 360 degree spacing. This sensor protrudes throughits mount to within 1.1
± 0.14 mm.

The output of the sensor is a sinusoidal signal. Each tooth of the pick-up 60 - 2 wheel generates a positive half wave.

The Engine Control Module (ECM) uses this sensor signal to generate timed ignition and injection pulses that it sends
to the ignition coils and to the fuel injectors.