Suzuki Forenza 2007-2008
Suzuki Reno 2007-2008
- In checking the ECM outputs for the electronic spark timing signal, it is recommended to use an oscilloscope to view the varying voltage signals. In measuring these outputs with a voltmeter, intermittent errors may occur that cannot be seen by a voltmeter.
- After confirming ECM inputs for the electronic spark timing to the EI system ignition coil are OK, it can be determined that a faulty EI system ignition coil is at fault.
- After confirming proper CKP inputs to the ECM and no wiring problems present, it can be determined that the ECM is at fault.
- This step, along with Step 25, checks for battery voltage and a ground to the EI system ignition coil.
If the wiring between the EI system ignition coil and the battery positive is OK, the problem is in the ignition relay circuit.