F400 Coolant Temperature - Too High (Shutdown)
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| Illustration 1 | g00566282 |
(1) Chassis Control Module. (2) Coolant Temperature Sensor. | |
This fault code is a critical alarm with shutdown. It signals a high temperature alarm for the engine coolant system and also initiates the automatic engine shutdown by shutting off fuel to the engine.
- Check the temperature of the engine coolant.
Expected Result: The temperature of the engine coolant is 112 °C (234 °F) or greater.
- YES, go to Step 2.
- NO, go to Step 3.
- YES, go to Step 2.
- Inspect cooling system for any malfunction, damage or debris. Clean or repair as needed. If applicable, use previous logged faults to help diagnose the temperature fault. Check active fault codes.
Expected Result: The fault code is active.
- YES, go to Step 3.
- NO, repair is complete.
- YES, go to Step 3.
- Inspect Rear Main harness, Front Main harness and connectors (C002, C008 and C104) for damage. Repair as needed. Check active fault codes.
Expected Result: The fault code is active.
- YES, go to Step 4.
- NO, repair is complete.
- YES, go to Step 4.
- Replace engine coolant temperature sensor with a new sensor and run machine until it reaches normal operating temperature. Check active fault codes.
Expected Result: The fault code is active.
- YES, go to Step 5.
- NO, repair complete.
- YES, go to Step 5.
- Download latest control module software into all control modules.
Expected Result: The fault code is active.
- YES, go to Step 6.
- NO, repair is complete. Calibrate transmission and three-point hitch.
- YES, go to Step 6.
- Replace the Chassis Control Module (CCM).
Expected Result: The fault code is active.
- YES, install the original CCM and repeat this troubleshooting procedure.
- NO, go to Step 7.
- YES, install the original CCM and repeat this troubleshooting procedure.
- Install the original CCM.
Expected Result: The fault code is active.
- YES, original CCM was faulty. Replace original CCM with new CCM. If fault code is not active, repair is complete. Download latest control module software into all modules. Calibrate transmission and three-point hitch.
- NO, this fault code may have been caused by faulty connectors. Keep the original on the tractor. Clean all terminals on the CCM and reconnect. If fault code is not active, repair is complete. Download latest control module software into all modules. Calibrate transmission and three-point hitch.
- YES, original CCM was faulty. Replace original CCM with new CCM. If fault code is not active, repair is complete. Download latest control module software into all modules. Calibrate transmission and three-point hitch.
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