COVER 1362920 - Caterpillar

Table 1
Diagnostic Codes Table
Code Conditions which Generate this Code System Response
261-13 Engine Timing Calibration : Calibration Required The engine speed/timing sensor has not been calibrated. This will not keep the engine from running. The fuel injection timing may be out of adjustment. The engine speed/timing sensors provide engine information to the Electronic Control Module (ECM). The sensor generates a pulse signal. A loss of the signals from the secondary engine speed/timing sensor and the primary engine speed/timing sensor causes the ECM to stop sending power to the fuel injectors.The ECM provides the engine speed/timing sensor with 12.5 1.0 VDC. A unique tooth on the timing reference gear generates a unique duty cycle. The signal provides the ECM with information on the engine position.If the primary engine speed/timing sensor fails, the ECM will use the secondary engine speed/timing sensor until electrical power is removed from the ECM. To prevent any unnecessary down time, replace the primary engine speed/timing sensor at the earliest possible convenience.
Install the Timing Calibration Probe.Note: Some engines may have a timing calibration probe included. The 6V-3093 Transducer Adapter is not required. On engines where the timing calibration probe is present, find and install the timing calibration probe into the timing calibration hole on the flywheel housing.
Turn the Engine Control Switch (ECS) to the OFF position.
Remove the timing calibration plug from the flywheel housing.
Examine the flywheel through the timing calibration hole. Ensure that