IGNITION COIL AND IGNITOR ASSEMBLY
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Ignition
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3. Ignition Coil and Ignitor
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4) Remove ignition coil and ignitor assembly.
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S161015
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Assembly
A: REMOVAL
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S161015A18
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1) Disconnect battery ground cable.
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B: INSTALLATION
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S161015A11
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Install in the reverse order of removal.
Tightening torque:
6.4 Nm (0.65 kgf-m, 4.7 ft-lb)
CAUTION:
Be sure to connect wires to their proper positions. Failure to do so will damage unit.
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2) Disconnect spark plug cords from ignition coil and ignitor assembly.
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3) Disconnect connector from ignition coil and ignitor assembly.
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IG(SOHCw/oOBD)-9
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IGNITION COIL AND IGNITOR ASSEMBLY
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Ignition
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C: INSPECTION
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S161015A10
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CAUTION:
If the resistance is extremely low, this indicates
the presence of a ground short circuit.
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Using oscilloscope and accurate tester, inspect the following items, and replace if defective.
- Ignitor input signal
- Secondary coil resistance
- Poor contact in ignition coil and ignitor assembly connector
1) Turn ignition switch to OFF.
2) Disconnect connector from ECM, then connect ST. <Ref. to EN(SOHCw/oOBD)-23, HOW TO CHECK I/O SIGNAL FOR ECM, Engine Control Module (ECM) I/O Signal.>
ST 498307600 CHECK BOARD KIT
3) Turn ignition switch to ON.
4) Measure voltage between ignition coil and ignition assembly and body.
Connector & terminal:
(A) No. 5 - Engine ground (A) No. 12 - Engine ground
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9) Check poor contact in ignition coil and ignitor assembly connector.
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Specified voltage: 3 - 4 V
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5) Turn ignition switch to OFF.
6) Disconnect connector from ignition coil and ignitor assembly.
7) Remove spark plug cords.
8) Measure resistance between spark plug cord contact portions to check secondary coil.
Terminals / Specified resistance: (A) - (B)/13.0±2.6kD. (C) -(D)/13.0 ±2.6 kD.
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IG(SOHCw/oOBD)-10
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