0323708 JOHNSON ORIFICE PLUG, No. 50

Table 1
J1939 Code and Description CDL Code and Description Comments
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 Temperature Control Module (TCM) hardware.
4193-19
Engine Coolant Pump Outlet Temperature : Data Error 2349-19
Engine Coolant Pump Outlet Temperature Sensor : 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 Electronic Control Module (ECM) via the CAN data link.
Illustration 1 g06081821
Table 2
Troubleshooting Test Steps Values 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 event code.
Codes
Result: A -9 code is present.
Proceed to Test Step 8.
Result: A -14 code is present.
Proceed to Test Step 5.
2. Check for Opens in the Engine Coolant Pump Outlet Temperature Sensor Wiring Harness
A. Turn the keyswitch to the "OFF" position.
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 (SIGNAL) on the Coolant Temperature Control Module connector and terminal 1 (SIGNAL) on the Coolant Pump Outlet Temperature Sensor Connector.
E. Measure the resistance between terminal 3 (RETURN) on the Coolant Temperature Control Module connector and terminal 2 (RETURN) on the Coolant Pump Outlet Temperature Sensor connector.
Open Circuit
Result: There were less than 10 Ohms of resistance between the Engine Coolant Pump Outlet Temperature Sensor circuit wires.
Proceed to Test Step 3.
Result: There were more than 10 Ohms of resistance on any 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. Verify that the problem is resolved.
Proceed to Test Step 10.
3. Check for Short Circuits in the Engine Coolant Pump Outlet Temperature Sensor Wiring Harness
A. Turn the keyswitch to the "OFF" position.
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 (SIGNAL) on the Coolant Temperature Control Module connector and a good chassis ground.
E. Measure the resistance between terminal 3 (RETURN) on the Coolant Temperature Control Module connector and a good known good chassis ground.
Short Circuit
Result: There were more than 100 K Ohms of resistance between the connector terminal and ground on both of the Engine Coolant Pump Outlet Temperature Sensor circuit wires.
Proceed to Test Step 4.
Result: There were less than 100 K Ohms of resistance between the connector terminal and ground on any one of the Engine Coolant Pump Outlet Temperatures Sensor circuit wires.
Repair: There is a short circuit to ground in the wiring harness.
Verify that the problem is resolved
Proceed to Test Step 10.
4. Check for Short Circuits in the Engine Coolant Pump Outlet Temperature Sensor Wiring Harness
A. Turn the keyswitch to the "OFF" position.
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 (SIGNAL) on the Coolant Temperature Control Module connector and all other pins in the Coolant Temperature Control Module connector.
E. Measure the resistance between terminal 3 (RETURN) on the Coolant Temperature Control Module connector and all other pins in the Coolant Temperature Control Module connector.
Short Circuit
Result: There were more than 100 K Ohms of resistance between all the Engine Coolant Pump Outlet Temperature Sensor circuit wires.
Repair: A failed Engine Coolant Pump Outlet Temperature Sensor has been detected. Replace the Engine Coolant Pump Outlet Temperature Sensor.
Proceed to Test Step 10.
Result: There were less than 100 K Ohms of resistance between any of the Engine Coolant Pump Outlet Temperatures Sensor circuit wires.
Repair: There is a pin to pin short circuit in the harness. Repair the wiring or replace the harness.
Verify that the problem is resolved.
Proceed to Test Step 10.
5. Check the Part Number of the Component
A. Locate the part number for the component that was identified by the "System Communication Status". Check to see if the part number is correct for the application.
Part Number
Result: The part number is incorrect for the application.
Repair: Replace the component with the correct part number.
Proceed to Test Step 10.
Result: The part number is correct for the application.
Proceed to Test Step 6.
6. Check for Incorrect Configuration Parameters
A. Connect to Cat ET.
B. Use Cat ET to verify that the correct parameters are being used.
Parameters
Result: The parameters are correct.
Proceed to Test Step 7.
Result: The parameters are not correct.
Repair: Input the correct parameters. Refer to Troubleshooting, Configuration Parameters for additional information.
If the problem is not resolved, proceed to Test Step 7.
7. Ensure that the latest Flash File Software is Installed in the ECM
A. Connect Cat ET.
B. Use Cat ET to verify that the correct flash file is being used.
Flash File
Result: The latest flash file is installed.
Proceed to Test Step 10.
Result: The latest flash file is not installed.
Repair: Perform the following procedure:
1: Download the latest flash file from SIS Web.
2: Install the software into the ECM.
Refer to Troubleshooting, ECM Software - Install for additional information.
Proceed to Test Step 10.
8. Check the Resistance of the Data Link
A. Remove electrical power from the engine.
B. Measure the resistance of the data link between the following terminals on the 12-pin TCM wiring harness connector:
-Pin 4 (CAN +) and Pin 6 (CAN-)
60 10 Ohms
Result: The resistance is less than 50 Ohms.
Repair: There are more than 2 terminating resistors installed in the wiring harness or a short circuit has been detected. Repair or replace damaged components.
Proceed to Test Step 10.
Result: The resistance is 120 10 Ohms.
Repair: There is a problem with a terminating resistor. Check the resistance on each terminating resistor. Replace the failed terminating resistor.
Proceed to Test Step 10.
Result: The resistance is greater than 130 Ohms.
Repair: There is a