PLATFORM AS 4605160 - Caterpillar

Note: The preceding diagrams are simplified schematics for the Sensors (Analog, Passive) of the Transmission ECM. The schematics are electrically correct. However, not all the possible harness connectors are shown.For the complete schematic for Machines (S/N: NMA; NJ9; JH9)Refer to Electrical Schematic, M0093723.For Machines (S/N: KWA; NA9; DK9)Refer to Electrical Schematic, M0093725.
Table 2
TEMPERATURE SENSORS
CID: 600
CELSIUS TEMPERATURE FAHRENHEIT TEMPERATURE RESISTANCE
-40 -40 33650.2 Ω
-30 -22 17709.4 Ω
-20 -4 9716.7 Ω
-10 14 5538 Ω
0 32 3268.3 Ω
10 50 1991.4 Ω
20 68 1249.5 Ω
30 86 805.5 Ω
40 104 532.3 Ω
50 122 360 Ω
60 140 248.7 Ω
70 158 175.2 Ω
80 176 125.7 Ω
90 194 91.7 Ω
100 212 68 Ω
110 230 51.2 Ω
120 248 39 Ω
130 266 30.1 Ω
140 284 23.6 Ω Diagnostic Trouble Code Procedure
Table 3
Troubleshooting Test Steps Values Results
1. Identify The Active DTC Code Associated With The Suspect Circuit
Code is present.
FMI 3 diagnostic code: proceed to Test Step 2.
FMI 4 diagnostic code: proceed to Test Step 7.
Begin Process For FMI 3 Troubleshooting HERE
2. Identify the Type Sensor
A. Determine whether the sensor is a temperature sensor, a fuel level sensor, or a seat sensor.
Note: This procedure covers temperature sensors, the fuel level sensor, and the seat sensor.
Sensor is present.
Temperature Sensor: proceed to Test Step 3.
Fuel Level Sensor: proceed to Test Step 4.
Operator In Seat Sensor: proceed to Test Step 5.
3. Check The Temperature Sensor
Note: See the tables above for a list of resistances related to specific values for the specific CID.
A. Turn the key start switch and the disconnect switch to the OFF position.
B. Disconnect the sensor from the harness.
C. Measure the resistance between pin 1 and 2 of the sensor.
The resistance reading agrees with the values from the table.
OK - The resistance reading agrees with the values in the table.
Proceed to Test Step 6.
NOT OK - The resistance reading does not agree with the values in the table.
Repair: Replace the sensor.
STOP
4. Check For An Open In The Sensor Circuit
A. The key start switch and disconnect switch remain in the OFF position.
B. The harness connector remains disconnected from the sensor.
C. Disconnect the J1 and J2 connectors from the ECM.
D. At the harness connector of the sensor, install a jumper wire.
E. At the harness connector for the ECM measure the resistance at the contacts for the sensor.
The resistance reading is less than 5 Ω.
OK - The resistance is less than 5 Ω.
Proceed to Test Step 5.
NOT OK - The resistance is greater than 5 Ω.
Repair: Either the signal or the return circuit wire is open. Repair or replace the harness.
STOP
5. Check The Signal Circuit For A Short.
A. The disconnect switch and the key start switch remain in the OFF position.
B. The harness connectors J1 and J2 remain disconnected from the ECM.
C. Remove the jumper wire that was installed during the previous Test Step.
D. At the ECM harness connectors measure the resistance between the positive connector and all J1 and J2 contacts.
Each resistance reading is greater than 5K Ω.
OK - Each measurement is greater than 5000 Ω.
Proceed to Test Step 10.
NOT OK - A resistance