Ignition Power Stage: Testing and Inspection
Ignition coil power stage, checkingWork 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 1 of unplugged connector (green/white wire) and ground
- Ground terminal 2 of unplugged connector 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 specification NOT OK
- 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 and terminals of control unit connector A
^ Terminals of switch module connector (1) and control unit connector A terminal (22)
^ Terminals of switch module connector (2) and control unit connector A terminal (2)
^ Specifications: approx. 0 ohm
If specifications NOT OK
- Check for open circuit in wiring between control unit and switch module
If specifications still NOT OK
- Replace control unit