GUIDE 4L8140 - Caterpillar

MID 087 - Chassis ECMCID 0702 - Transmission Gear Lever Selector Sensor (Switch)FMI 03 - Voltage Above Normal
Illustration 1 g02745016
Shift control lever position sensor circuit
This diagnostic code indicates the Chassis ECM detects the transmission gear lever selector sensor circuit voltage is above normal. This code can be caused by:
Open circuit
Shorted circuit
Failed sensor
Failed ECMNote: The following test procedure may create other diagnostic codes. Ignore these created codes and clear these created codes after the original diagnostic code has been corrected. Ensure that CID 0702 FMI 03 is active before performing this procedure.Note: Use a calibrated digital multimeter for this procedure.Test Step 1. CHECK FOR POWER AT THE SENSORDo not disconnect the harness from the sensor.
At the back of the harness connector for the sensor, insert a multimeter probe along contact 1 (wire 173-RD(Red)).
Turn on the disconnect switch and the keyswitch.
Measure the voltage from contact 1 (wire 173-RD(Red)) to contact 2 (wire J878-YL(Yellow)). Expected Result:The voltage is between 9 and 32 VDC.Results:
OK - The voltage is between 9 and 32 VDC. Proceed to Test Step 3.
NOT OK - The voltage is not between 9 and 32 VDC. Repair: Repair or replace