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Ensure that an O-ring is installed on the sensor.
#Cat c9 engine specs install
Note: Before replacing the ECM check the following components for possible damage:Ĭomplete all of the following tasks when you install a speed/timing sensor: Use the "Copy Configuration - ECM Replacement" feature on Cat ET. This feature requires the Caterpillar Electronic Technician (ET) and this feature is only possible if the existing ECM can communicate with Cat ET. If a replacement of the ECM is required, the ECM parameters and the timing calibration can be transferred from the suspect ECM to the replacement ECM.
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The engine will not start if the signals from both sensors are lost.īoth sensors are magnetic sensors. The engine will start when only one sensor signal is present. If the engine is running and the signals from both sensors are lost, fuel injection will be terminated and the engine will be shut down by the ECM. If the engine is running and the signal from one sensor is lost, no change in engine performance will be noticed. The actual timing and duration of each injection is based on engine rpm and on load. When the timing has been established, the ECM triggers each injector in the correct firing order at the correct time. When the timing has been established, the primary engine speed/timing sensor is then used to monitor engine speed.
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1 cylinder is at the top of the compression stroke. The secondary engine speed/timing sensor is used to determine when the piston in the No. Under normal operation, the secondary engine speed/timing sensor is used to determine timing for starting purposes. To determine rpm, the Electronic Control Module (ECM) counts the time between pulses that is created by the sensor as the gear rotates. The timing reference ring is located on the back of the camshaft gear. The primary engine speed/timing sensor and the secondary engine speed/timing sensor are used to detect the reference for engine speed and for engine timing from a unique pattern in the timing reference ring. The engine uses two engine speed/timing sensors. 342-11 Secondary Engine Speed Sensor mechanical failure.342-02 Loss of Secondary Engine Speed signal.320-11 Speed/Timing Sensor mechanical failure.320-02 Speed/Timing Sensor Loss of Signal.This procedure covers the following diagnostic codes: Use this procedure to troubleshoot any suspect problems with the following sensors: