0000892 BOLT Caterpillar parts BOLT
Alternative (cross code) number:
Illustration 1 g01003454
Schematic of the speed sensor for the right trackThis diagnostic code is recorded when the ECM reads speed sensor signal for the right track as having an abnormal frequency. The engine must be running and the lever must be in the FORWARD position or the REVERSE position in order to detect this diagnostic code.The possible causes of this diagnostic code are listed:
The right track has stalled for seven seconds.
The + battery circuit (497-BU) from the electrical system to the sensor is open.
The return circuit (J764-BR) is open.
The signal circuit is open or the sensor is disconnected.
The signal circuit is shorted to a positive voltage source.
The signal circuit is shorted to ground.
The sensor is misaligned or adjusted incorrectly.
The sensor has failed.
The ECM has failed. This is unlikely.System Response:When this diagnostic code occurs, the action lamp is NOT on. The machine will rely on accurate calibration values for straight tracking performance.Note: A diagnostic code will not be logged if both tracks are stalled for seven seconds.Note: Certain procedures can cause diagnostic codes for the speed sensor to occur. A stall condition for one track could trigger a diagnostic code for the speed sensor. Note: Ensure that the diagnostic code for the sensor is on hold and that the diagnostic indicator is ON. This procedure can cause related diagnostic codes to be recorded. Ignore these created diagnostic codes. When the procedure is completed, clear the created diagnostic codes. Test Step 1. CHECK THE RETURN CIRCUIT
Turn the key start switch to the OFF position.
Disconnect the machine harness connector from the sensor.
At the machine harness connector for the sensor, measure the resistance between return circuit J1-70 (J764-BR) and the frame ground.Expected Result:The resistance should measure 5 ohms or less. Results:
OK - The return circuit is correct.