RETAINER 9W2380 - Caterpillar

Use this procedure if the diagnostic code in Table 1 is active.
Table 1
Diagnostic Codes Table    
Code and Description    Conditions which Generate this Code    System Response    
91-13 Throttle Position Sensor : Calibration Required     The duty cycle for the throttle position sensor signal is less than 5 percent or more than 95 percent.     The Electronic Control Module (ECM) sets the desired engine speed to programmed low idle while this diagnostic code is active. Caterpillar Electronic Technician (ET) will indicate a throttle position of 0 percent while this diagnostic code is active.    The throttle linkage should operate without binding or without excessive drag. The calibration of the throttle position sensor requires the use of Cat ET.
Check the Throttle Linkage for Damage.
Remove electrical power from the ECM.
Inspect the throttle linkage for components with the following conditions:
Loose
Bent
Broken
Missing
WornRepair any damaged components.
Adjust the Throttle Linkage for Low Idle.
Connect Cat ET to the service tool connector.
Restore electrical power to the ECM. Do not start the engine.
Observe the throttle position on Cat ET.
Place the throttle control in the low idle position. Adjust the throttle linkage or adjust the low idle set screw until the throttle position on Cat ET reads 0 percent.When the throttle is in the low idle position, the duty cycle of the throttle position sensor is 5 to 10 percent. The ECM converts this duty cycle of 5 to 10 percent into a throttle position of 0 percent.
Adjust the Throttle Linkage for High Idle.
Place the throttle control in the high idle position. Adjust the throttle linkage or adjust the high idle set screw until the throttle position on Cat ET reads 100 percent.When the throttle is in the high idle position, the duty cycle of the throttle position sensor is 90 to 95 percent. The ECM converts this duty cycle of 90 to 95 percent into a throttle position of 100 percent.Adjust the throttle from the low idle position to the high idle position. Monitor the throttle position on Cat ET. If the throttle position Cat ET does not read 0 to 100 percent, perform this procedure again.