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Table 1
J1939 Code and Description CDL Code and Description Comments
4193-3
Engine Coolant Pump Outlet Temperature : Voltage Above Normal 2854-3
Engine Coolant Pump Outlet Temperature : Voltage Above Normal. The coolant pump temperature control module detected as open circuit on the coolant pump outlet temperature sensor circuit.
4193-4
Engine Coolant Pump Outlet Temperature : Voltage Below Normal 2854-4
Engine Coolant Pump Outlet Temperature : Voltage Below Normal. The coolant pump temperature control module detected as short circuit on the coolant pump outlet temperature sensor circuit.
4193-9
Engine Coolant Pump Outlet Temperature : Abnormal Update Rate 2854-9
Coolant Temperature Control Module : Abnormal Update Rate The TCM cannot communicate with the engine ECM.
4193-14
Engine Coolant Pump Outlet Temperature : Special Instruction 2854-14
Coolant Temperature Control Module : Special Instruction At startup, the ECM detected a mismatch between the engine software and the TCM hardware.
4193-19
Engine Coolant Pump Outlet Temperature : Data Error 2349-19
Engine Coolant Pump Outlet Temperature : Data Error The coolant temperature control module reported that there is a problem with the circuit for the coolant temperature sensor. The problem is communicated to the Electronic Control Module (ECM) via the CAN data link.
Illustration 1 g06541579Recommended Actions
Table 2
Troubleshooting Test Steps Value Results
1. Check for Codes
A. Connect Cat® Electronic Technician (ET) to the service tool connector.
B. Look for active codes that are associated with the system for the code.
Codes
Result: A -9 code is present
Proceed to Test Step 11.
Result: A -14 code is present.
Proceed to Test Step 8.
Result: A -19 code is present.
Proceed to Test Step 2.
Illustration 2 g06548462
Table 3
Troubleshooting Test Steps Value Results
2. Check for diagnostic codes on the Electronic Fluid Temperature Control #1 ECM
A. Connect Cat Electronic Technician (Cat® ET) to the service tool connector.
B. Navigate to the Electronic Fluid Temperature Control #1 ECM
C. Check for active codes.
Codes
Result: A 4193-3 is active.
Proceed to Test Step 3.
Result: A 4193-4 is active.
Proceed to Test Step 4.
Result: A 4193-2 is active.
Proceed to Test Step 5.
Result: A 4193-0 is active.
Refer to Troubleshooting, Coolant Temperature is High
3. Create a Short at the Sensor Connector
A. Turn the key switch to OFF.
B. Disconnect the coolant pump outlet temperature sensor.
C. Install a jumper wire between the following terminals at the sensor connector:
Terminal 1 (sensor signal) and Terminal 2 (sensor return)
D. Turn the key switch to ON.
E. Connect Cat ET.
F. Use Cat ET to monitor the following:
4193-4 code on the Electronic Fluid Temperature Control #1 ECM Create a Short Result: The 4193-3 code remains active.
Repair: There is an open circuit in the wiring harness. Repair or replace the wiring harness.
Verify that the repair eliminated the problem.
Result: A 4193-4 code became active.
Repair: The wiring harness is OK. Replace the sensor.
Verify that the repair eliminated the problem.
Proceed to Test Step 13.
4. Create an Open at the Sensor Connector
A. Turn the key switch to OFF.
B. Disconnect the coolant pump outlet temperature sensor.
C. Turn the key switch to ON.
D. Connect Cat ET
E. Use Cat ET to monitor the following:
4193-3 code on the Electronic Fluid Temperature Control #1 ECM
Create an Open
Result: The4193-4 code remains active.
Repair: There is a short circuit in the wiring harness. Repair or replace the wiring harness.
Verify that the repair eliminated the problem.
Result: A 4193-3 code became active.
Repair: The wiring harness is OK. Replace the sensor.
Verify that the repair eliminated the problem.
Proceed to Test Step 13.
5. Check for Opens in the Engine Coolant Pump Outlet Temperature Sensor Wiring Harness
A. Turn the key switch to OFF.
B. Disconnect the Engine Coolant Pump Outlet Temperature Sensor wiring harness from the sensor.
C. Disconnect the wiring harness connector from the Coolant Temperature Control Module.
D. Measure the resistance between 10 on the Coolant Temperature Control Module 12-pin connector and terminal 1 on the Coolant Pump Outlet Temperature Sensor connector.
E. Measure the resistance between terminal 3 on the Coolant Temperature Control Module connector and terminal 2 on the Coolant Pump Outlet Temperature Sensor connector.
Open Circuit
Result: There was less than 10Ω of resistance between the Engine Coolant Pump Outlet Temperature Sensor circuit wires.
Proceed to Test Step 6.
Result: There was more than 10Ω of resistance on one of the Engine Coolant Pump Outlet Temperatures Sensor circuit wires.
Repair: There is an open in the wiring harness. Repair the wiring or replace the harness.
Proceed to Test Step 13.
6. Check for Short Circuits in the Engine Coolant Pump Outlet Temperature Sensor Wiring Harness
A. Turn the key switch to OFF.
B. Disconnect the Engine Coolant Pump Outlet Temperature Sensor wiring harness from the sensor.
C. Disconnect the wiring harness connector from the Coolant Temperature Control Module.
D. Measure the resistance between terminal 10 on the Coolant Temperature Control Module 12-pin connector and a known good chassis ground.
E. Measure the resistance between terminal 3 on the Coolant Temperature Control Module 12-pin connector and a known good chassis ground.
Short Circuit
Result: There is more than 100KΩ of resistance between the connector terminal and ground on both the Engine Coolant Pump Outlet Temperature Sensor circuit wires.
Proceed to Test Step 7.
Result: There was less than 100KΩ resistance between the connector terminal and ground on one of the Engine Coolant Pump Outlet Temperatures Sensor circuit wires.
Repair: There is a short circuit to ground in the wiring harness. Repair the wiring or replace the harness.
Proceed to Test Step 13.
7. Check for Short Circuits in the Engine Coolant Pump Outlet Temperature Sensor Wiring Harness
A. Turn the key switch to OFF.
B. Disconnect the Engine Coolant Pump Outlet Temperature Sensor wiring harness from the sensor.
C. Disconnect the wiring harness connector from the Coolant Temperature Control Module.
D. Measure the resistance between terminal 10 on the Coolant Temperature Control Module 12-pin connector and all other pins in the coolant temperature control module connector.
E. Measure the resistance between terminal 3 of the Coolant Temperature Control M