How to Check the Camshaft Position Sensor?

[SanKayden]

When the camshaft position sensor fails and the signal is interrupted, a diagnostic tool can be used to detect the fault information, thereby indicating a camshaft position sensor failure. There are two detection methods: 1. Detection of the sensor power supply voltage: Turn off the ignition switch, unplug the sensor wire connector, and connect the positive and negative probes of a multimeter to terminals 1 and 3, respectively. When the ignition switch is turned on, the voltage should be above 4.5V. If the voltage is zero, it indicates a break or short circuit in the wiring harness, or an ECU fault. After turning off the ignition switch, continue to check for any breaks or short circuits in the wiring. 2. Detection of wire resistance: Use the multimeter's resistance function to check the resistance between terminal 1 of the sensor and terminal 62 of the ECU, terminal 2 of the sensor and terminal 76 of the ECU, and terminal 3 of the sensor and terminal 67 of the ECU. The resistance between each wire should not exceed 1.5 ohms. If the resistance is too high or infinite, it indicates poor contact or a broken wire in the wiring harness, which should be repaired or replaced.