Ignition Coil: Testing and Inspection

Secondary resistance, checking
Work sequence





- Remove electrical connections from top of ignition coil
- Connect ohmmeter between terminals 1 and 4 of ignition coil
^ Specification: 6.5-8.0 K ohm

If specification NOT OK
- Check for good contact at lower coil connection

If connection OK
- Replace ignition coil

Primary resistance, checking
Work sequence

- Remove electrical connections from top of ignition coil





- Connect ohmmeter between terminals 1 and 15 on ignition coil
^ Specification: 0.5-1.5 ohm

If specification NOT OK
- Replace ignition coil and repeat check

Ignition coil power stage switching module, checking
Work sequence

Note: Check blue connecting wire and insulation from terminal 1 of ignition coil to switch module for any damage or corrosion. Repair if necessary.





- Connect coil wire to ground with jumper wire





- Unplug connector from power stage (arrow) more





- Connect voltmeter between terminal 2 of unplugged connector B (green/white wire) and ground

- Ground terminal 1 of unplugged connector B with jumper wire

CAUTION: Be sure test lead connections are correct. If connections are reversed, engine control unit may be damaged.

- Crank engine with starter
^ specification: min. 0.2 V

If NO
- Check wiring between switch module and control unit connectors as follows
- Remove control unit cover panel located on passenger side footwell
- Unplug control unit connector





- Using ohmmeter, check between terminals of switch module connector B and terminals of control unit connector A
^ Connector B terminal (1) and control unit connector A terminal (2)
^ Connector B terminal (2) and control unit connector A terminal (22)
^ Each specification: approx. 0 ohm

If NO
- Check for open circuit in wiring between control unit and switch module

If still NO
- Replace control unit