Mitsubishi Outlander (2003+). Manual — part 142

IGNITION SYSTEM

ENGINE ELECTRICAL

16-33

ON-VEHICLE SERVICE

IGNITION COIL (WITH BUILT-IN POWER TRANSISTOR) CHECK <4G63>

M1163001200409

Check by the following procedure, and replace if
there is a malfunction.

SECONDARY COIL RESISTANCE CHECK

Measure the resistance between the high-voltage
terminals of the ignition coil.

Standard value: 8.5

−

11.5 k

Ω

PRIMARY COIL AND POWER
TRANSISTOR CONTINUITY CHECK

NOTE:

.

•

An analogue-type circuit tester should be used.

•

Connect the negative (-) prove of the circuit tester
to terminal No. 1.

CAUTION

This test must be performed quickly (in less

than 10 seconds) to prevent coil from burning
and power transistor from breakage.
Connect and disconnect 1.5 V battery between
terminal No. 2 and No. 3, and observe the ohmmeter
whether there is continuity or not.

IGNITION COIL (WITH BUILT-IN POWER TRANSISTOR) CHECK <4G69>

M1163001200391

Check by the following procedure, and replace if
there is a malfunction.

SECONDARY COIL RESISTANCE CHECK

NOTE: It is impossible to check the secondary coil
through the continuity check as a diode is integrated
in the secondary coil circuit of this ignition coil.
Accordingly, check the secondary coil in the following
procedure.
1. Disconnect the ignition coil connector.
2. Remove the ignition coil and install a new spark

plug to the ignition coil.

3. Connect the ignition coil connector.
4. Earth the side electrode of the spark plug and

crank the engine.

5. Check that spark is produced between the

electrodes of the spark plug.

6. If no spark plug is produced, replace the ignition

coil with a new one and recheck.

7. If spark is produced with the new ignition coil,

replace the old one as it is faulty. If no spark is
produced again, the ignition circuit is suspected
as faulty. Check the ignition circuit.

AKX01264

1.5 V power supply
between 2

−

3

Continuity between 1

−

2

When current is flowing

Continuity

When current is not
flowing

No continuity

AK202356

1 2 3

AE

1.5 V

–

+

–

+

IGNITION SYSTEM

ENGINE ELECTRICAL

16-34

PRIMARY COIL AND POWER
TRANSISTOR CONTINUITY CHECK

NOTE:

.

•

An analogue-type circuit tester should be used.

•

Connect the negative (-) prove of the circuit tester
to terminal No. 1.

CAUTION

This test must be performed quickly (in less

than 10 seconds) to prevent coil from burning
and power transistor from breakage.
Connect and disconnect 4.5

−

9.0 V battery between

terminal No. 2 and No. 3, and observe the ohmmeter
whether there is continuity or not.

RESISTIVE CORD CHECK <4G63>

M1163001400146

Measure the resistance of the all spark plug cables.
1. Check cap and coating for cracks.
2. Measure resistance.

Limit: Maximum 19 k

Ω

AK202356

1 2 3

AD

4.5 – 9 V

–

+

–

+

4.5

−

9 V power supply

between 2

−

3

Continuity between 1

−

2

When current is flowing

Continuity

When current is not
flowing

No continuity

AKX00382

IGNITION SYSTEM

ENGINE ELECTRICAL

16-35

SPARK PLUG CHECK AND CLEANING <4G63>

M1163004300405

CAUTION

When pulling off the spark plug cable from the
plug always hold the cable cap, not the cable.
1. Remove the spark plug cables.
2. Remove the spark plugs.

CAUTION

•

Do not attempt to adjust the gap of the iridium
plug.

•

Always use a plug cleaner and finish cleaning
within 20 seconds. Do not use wire brushes.
Otherwise, the iridium and platinum tip may
be damaged.

3. Check the plug gap and replace if the limit is

exceeded.
Standard value: 1.0

−

1.1 mm

Limit: 1.3 mm

CAUTION

Be careful not to allow foreign matter in
cylinders.
4. Clean the engine plug holes.
5. Install the spark plugs.

SPARK PLUG CHECK AND CLEANING<4G69>

M1163004300416

1. Remove the spark plugs.

CAUTION

•

Do not attempt to adjust the gap of the iridium
plug.

•

Always use a plug cleaner and finish cleaning
within 20 seconds. Do not use wire brushes.
Otherwise, the iridium tip may be damaged.

2. Check the plug gap and replace if the limit is

exceeded.
Standard value: 0.7

−

0.8 mm

Limit: 1.2 mm

CAUTION

Be careful not to allow foreign matter in
cylinders.
3. Clean the engine plug holes.
4. Install the spark plugs.

AKX01327AD

Iridium tip

Platinum tip

AKX00383

Iridium tip

AN

IGNITION SYSTEM

ENGINE ELECTRICAL

16-36

CAMSHAFT POSITION SENSOR CHECK

M1163004400264

Check the camshaft position sensor circuit if
self-diagnosis code, No. P0340 is shown.
(Refer to

P.13A-142

, GROUP 13A

−

Troubleshooting

−

Inspection procedure for diagnosis code.) <4G63>

(Refer to

P.13B-179

, GROUP 13B

−

Troubleshooting

−

Inspection procedure for diagnosis code.) <4G69>

CRANK ANGLE SENSOR CHECK

M1163004500324

Check the crank angle sensor circuit if self-diagnosis
code, No. P0335 is shown.
(Refer to

P.13A-131

GROUP 13A

−

Troubleshooting

−

Inspection procedure for diagnosis code.) <4G63>

(Refer to

P.13B-169

GROUP 13B

−

Troubleshooting

−

Inspection procedure for diagnosis code.) <4G69>

DETONATION SENSOR CHECK

M1163002900058

Check the detonation sensor circuit if self-diagnosis
code, No. P0325 is shown.
(Refer to

P.13A-127

, GROUP 13A

−

Troubleshooting

−

Inspection procedure for diagnosis code.) <4G63>

(Refer to

P.13B-166

, GROUP 13B

−

Troubleshooting

−

Inspection procedure for diagnosis code.) <4G69>

IGNITION SECONDARY VOLTAGE WAVEFORM CHECK USING AN OSCILLOSCOPE
<4G63>

M1163001700233

MEASUREMENT METHOD

1. Clamp the secondary pickup around the spark

plug cable.
NOTE:

.

•

The peak ignition voltage will be reversed
when the spark plug cables No. 2 and No. 4,
or No. 1 and No. 3 cylinders are clamped.

•

Because of the two-cylinder simultaneous
ignition system, the waveforms for two
cylinders in each group appear during
waveform observation (No. 1 cylinder - No. 4
cylinder, No. 2 cylinder - No. 3 cylinder).
However, waveform observation is only
applicable for the cylinder with the spark plug
cable clamped by the secondary pickup.

•

Identifying which cylinder waveform is
displayed can be difficult. For reference,
remember that the waveform of the cylinder
attached to the secondary pickup will be
displayed as stable.

2. Clamp the spark plug cable with the trigger

pickup.
NOTE: Clamp the trigger pickup to the same
spark plug cable clamped by the secondary
pickup.