SEAT GP 4408471 - Caterpillar

Illustration 1 g06055398Recommended 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 even code.
Codes
Result: A -9 code is present
Proceed to Test Step 8.
Result: A -14 code is present.
Proceed to Test Step 5.
Result: A -19 code is present.
Proceed to Test Step 2.
2. Check for Opens in the Engine Coolant Pump Outlet Temperature Sensor Wiring Harness
A. Turn the keyswitch 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 28 on the Coolant Temperature Control Module 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 3.
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 10.
3. Check for Short Circuits in the Engine Coolant Pump Outlet Temperature Sensor Wiring Harness
A. Turn the keyswitch 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 28 on the Coolant Temperature Control Module connector and a known good chassis ground.
E. Measure the resistance between terminal 34 on the Coolant Temperature Control Module connector and a known good chassis ground.
Short Circuit
Result: There are 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 4.
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 10.
4. Check for Short Circuits in the Engine Coolant Pump Outlet Temperature Sensor Wiring Harness
A. Turn the keyswitch 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 28 of the Coolant Temperature Control Module connector and all other pins in the Coolant Temperature Control Module connector.
E. Measure the resistance between terminal 34 of the Coolant Temperature Control Module connector and all other pins in the Coolant Temperature Control Module connector.
Short Circuit
Result: There was more than 100KΩ 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