180 RENR5042-02 Troubleshooting Section Calibration Procedures Table 22 i02286006 Engine Speed/Timing Sensor - Calibrate SMCS Code: 1912-524 System Operation Description: The Electronic Control Module (ECM) has the ability to calibrate the mechanical differences between the Top Center (TC) of the flywheel and the TC of the timing gear on the camshaft. A magnetic transducer signals the TC of the flywheel to the ECM when a notch on a counterweight passes by the transducer. The engine speed/timing sensor signals the TC of the timing gear to the ECM. Any offset between the TC of the flywheel and the TC of the timing gear is stored into the memory of the ECM. D. Refer to Table 23.
Locate the engine’s timing calibration port. Note: A timing calibration will not increase the available engine power. Table 21 lists the special tools that are required in order to perform this procedure. Table 21 (1) This item is not required if the engine harness has a connector for timing calibration. Test Step 1. Install the Transducer Adapter A. Turn the keyswitch to the OFF position. B. Use the appropriate engine turning tool to put either the No. 1 piston or the No. 6 piston at top center. Refer to Systems Operation/Testing and Adjusting, “Finding the Top Center Position for the No. 1 Piston”. C. Refer to Table 22.
After the top center position has been located, rotate the crankshaft for the number of degrees that is applicable to your engine model. Be sure to rotate the crankshaft in the direction of rotation that is specified in the Table.
Crankshaft Rotation Engine Model Number of Degrees Direction of Rotation C7 100 Normal Rotation C-9 85 Normal Rotation C-10 60 Opposite Normal Rotation C11 75 Normal Rotation C-12 60 Opposite Normal Rotation C13 75 Normal Rotation C-15 60 Opposite Normal Rotation C15 60 Opposite Normal Rotation C-16 60 Opposite Normal Rotation C18 30 Opposite Normal Rotation Required Special Tools Part Number Description 7X-1171 Transducer Adapter 6V-2197 Transducer 7X-1695 Cable As 170-3519 Harness (1)