Camshaft Position Sensor: Sephia
Connect lab scope positive probe to ECM connector terminal No. 44 (Blue/Red wire). See Figure. Connect lab scope negative probe to ground. Set lab scope time to 50 milliseconds and voltage to 5 volts. Start engine and allow it to reach normal operating temperature. With engine at idle, compare CMP sensor waveform to normal CMP sensor waveform. See Fig 1. If waveform is erratic, replace CMP sensor.