Mitsubishi Lancer. Manual - part 210
IGNITION SYSTEM
ENGINE ELECTRICAL
16-32
ON-VEHICLE SERVICE
IGNITION COIL (WITH BUILT-IN POWER
TRANSISTOR) CHECK
M1163001200324
Check by the following procedure, and replace if
there is a malfunction.
SECONDARY COIL RESISTANCE CHECK
AKX01264
Measure the resistance between the high-voltage
terminals of the ignition coil.
Standard value: 8.5
− 11.5 kΩ
PRIMARY COIL AND POWER TRANSIS-
TOR CONTINUITY CHECK
NOTE:
.
•
AKX01265AD
1.5 V
1 2 3
+
–
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.
1.5 V power supply
between 2
− 3
Continuity between 1
−
2
When current is flowing
Continuity
When current is not
flowing
No continuity
RESISTIVE CORD CHECK
M1163001400124
AKX00382
Measure the resistance of the all spark plug cables.
1. Check cap and coating for cracks.
2. Measure resistance.
Limit: Maximum 19 k
Ω
SPARK PLUG CHECK AND CLEANING
<4G1>
M1163004300342
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.
3. Check for burned out electrode or damaged
insulator. Check for even burning.
4. Remove carbon deposits with wire brush or plug
cleaner. Remove sand from plug screw with
compressed air.
AKX01272AG
Plug gap gauge
Measurement
direction
5. Use a plug gap gauge to check that the plug gap
is within the standard value range.
Standard value: 1.0
− 1.1 mm
If the plug gap is not within the standard value
range, adjust by bending the earth electrode.
CAUTION
Be careful not to allow foreign matter in cylin-
ders.
6. Clean the engine plug holes.
7. Install the spark plugs.