MITSUBISHI ENDEAVOR 2004 Service Repair Manual

Fig. 131: Disconnecting Connector C
-312

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KEY REMINDER SWITCH CHECK Check for continuity between terminal 4 and terminal 6.
2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor

Fig. 132: Checking Key Reminder Switch Continuit
y
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2004 Mitsubishi Endeavor LS
2004 BODY & ACCESSORIES Ignition Switch - Endeavor

2004 ENGINE
Ignition System - Endeavor
GENERAL DESCRIPTION This system is provided with six ignition coils with built-in ignition power
transistors for each of the cylinders.
Interruption of the primary current flowing in the primary side of ignition coil
generates a high voltage in the secondary side of ignition coil.
The powertrain control module (PCM) controls the three ignition power transistors
to turn them alternately ON and OFF. This causes the primary currents in the
ignition coils to be alternately interrupted and allowed to flow to fire the cylinders
in the order 1-2-3-4-5-6.
The PCM determines which ignition coil should be controlled by means of the
signals from the camshaft position sensor which is incorporated in the camshaft and
from the crankshaft position sensor which is incorporated in the crankshaft.
It also detects the crankshaft position to provide ignition at the most appropriate
timing in response to the engine operation conditions.
When the engine is cold or operated at high altitudes, the ignition timing is slightly
advanced to
provide o
ptimum
performance.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Ignition System - Endeavor


2004 Mitsubishi Endeavor Limited 2004 ENGINE Ignition System - Endeavor

Fig. 1: Ignition System Circuit Diagram

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SPECIAL TOOLS Fig. 2: Identifying Special Tool

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ON-VEHICLE SERVICE KNOCK CONTROL SYSTEM CHECK Check the knock sensor circuit if diagnostic trouble code, No. P0325 is shown.
Refer to DTC P0325: KNOCK SENSOR CIRCUIT MALFUNCTION
.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Ignition System - Endeavor

IGNITION COIL CHEC
K
Check by the following procedure, and replace the coil if there is a malfunction. PRIMARY COIL AND IGNITION POWER TRANSISTOR CONTINUITY CHECK Fig. 3: Checking Primary Coil And Ignition Power Transistor

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NOTE: An analog-type ohmmeter should be used.
NOTE: Connect the negative probe of the ohmmeter to terminal 1.
CAUTION: This test must be performed quickly (in less than 10
seconds) to prevent coil from burning and ignition
power transistor from breaking.
2004 Mitsubishi Endeavor Limited 2004 ENGINE Ignition System - Endeavor

1. 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.
2. If results do not agree with the table below, replace the primary coil and
ignition power transistor assembly.
Fig. 4: Identifying Power Supply Continuity Chart

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SECONDARY COIL CHECK 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. Ground 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. 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.
2004 Mitsubishi Endeavor Limited 2004 ENGINE Ignition System - Endeavor

SPARK PLUG TEST 1. Remove the spark plug and connect to the ignition coil.
Fig. 5: Removing Spark Plug

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2. Ground the spark plug outer electrode (body), and crank the engine.
Check that there is an electrical dischar
ge between the electrodes at this time.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Ignition System - Endeavor

Fig. 6: Checking Spark Plug

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SPARK PLUG CHECK AND CLEANING Check the plug gap and replace if the limit is exceeded.
Standard value: 0.7 - 0.8 mm (0.028 - 0.031 inch)
Limit: 1.2 mm (0.047 inch)
CAUTION:
Do not attempt to adjust the gap of the iridium
plug. Cleaning of the iridium plug may result in
damage to the iridium tips. Therefore, if carbon
deposits must be removed, use a plug cleaner
and complete cleaning within 20 seconds to
protect the electrode. Do not use a wire brush.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Ignition System - Endeavor

Fig. 7: Locating Iridium Tip

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CAMSHAFT POSITION SENSOR CHECK Refer to DTC P0340: CAMSHAFT POSITION SENSOR CIRCUIT
.
CRANKSHAFT POSITION SENSOR CHECK Refer to DTC P0335: CRANKSHAFT POSITION SENSOR CIRCUIT
.

2004 Mitsubishi Endeavor Limited 2004 ENGINE Ignition System - Endeavor

IGNITION COI
L
REMOVAL AND INSTALLATION Fig. 8: Removing And Installing Ignition Coil

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CAMSHAFT POSITION SENSOR REMOVAL AND INSTALLATION
2004 Mitsubishi Endeavor Limited 2004 ENGINE Ignition System - Endeavor