184 RENR5042-02 Troubleshooting Section Test Step 5. Calibrate the Throttle at Low Idle Not OK – The “Throttle Position” is not 100 percent when the throttle is at high idle. A. Connect Cat ET to the service tool connector. Refer to Troubleshooting, “Electronic Service Tools”. Repair: Perform the following procedure: 1. Adjust the “Throttle Input High Idle Duty Cycle Setpoint” on the “Configuration” screen on Cat ET. B. Turn the keyswitch to the ON position. Do not start the engine. C. Move the throttle to low idle. 2. Verify that the “Throttle Position” is 100 percent when the throttle is at high idle. D. Observe the “Throttle Position” on the status screen of Cat ET. STOP. E.
Verify that the “Throttle Position” is zero percent. Expected Result: The “Throttle Position” is zero percent when the throttle is at low idle. Results: OK – The “Throttle Position” is zero percent when the throttle is at low idle. Proceed to Test Step 6. Not OK The “Throttle Position” is not zero percent when the throttle is at low idle. Repair: Perform the following procedure: 1. Adjust the value of the “Throttle Input Low Idle Duty Cycle Setpoint” on the “Configuration” screen of Cat ET. 2. Verify that the “Throttle Position” is zero percent when the throttle is at low idle. Proceed to Test Step 6. Test Step 6. Configure the Calibration for High Idle A. Move the throttle to high idle. B.
Check the “Throttle Position” on the status screen of Cat ET. C. Verify that the “Throttle Position” is 100 percent. Expected Result: The “Throttle Position” is 100 percent when the throttle is in high idle. Results: OK – The “Throttle Position” is 100 percent when the throttle is at high idle. Calibration of the throttle is complete. STOP.