15. IGNITION SYSTEM ZING125 CDI Tester Test the CDI unit using the CDI tester. Operate the CDI tester by following the Ignition Coil Spark manufacturer`s instructions. Window Connect the special connector to the CDI coupler and CDI tester. Switch Range Good CDI Faulty CDI 1. OFF No spark 2. P No spark 3. EXT No spark Good spark Spark Plug CDI Unit 4. ON1 Good spark No spark 5. ON2 Good spark No spark If the CDI unit is faulty, replace it with a new one. Blue/White PULSER COIL INSPECTION Disconnect the pulser coil wire coupler and measure the resistance between the blue/ white and green/white wire terminals. Resistance: 92138 Green/White Black/Red EXCITER COIL INSPECTION Disconnect the exciter coil wire coupler and measure the resistance between the black/red wire terminal and ground. Resistance: 272408 15-5