Detroit Diesel 4000 Series, Service Manual, Page: 2670 / 2706

SERIES 4000 12/16V SERVICE MANUAL
E 012.05 AF – CHARGE AIR COOLANT TEMPERATURE TOO HIGH
Start with the first probable cause for charge air coolant temperature too high listed in Table 31,
perform the check and take the suggested remedial action. If the problem persists, go to the next
probable cause, perform the check, etc., until troubleshooting is complete.
Probable Causes Check Remedial Action
Charge air coolant level too low Charge air coolant level Replenish charge air coolant
Charge air coolant system dirty Charge air coolant system Clean
Vent lines Clean
Charge air coolant heat exchanger Clean; replace if necessary
DDEC Indicator lamp Refer to DDEC III/IV Single ECM
Troubleshooting (6SE497) and/or
DDEC Multi-ECM Troubleshooting
Guide (6SE496)
Fan drive faulty Refer to section E 012.05 AL Refer to section E 012.05 AL
Charge air coolant thermostat
faulty Charge air coolant thermostat Replace
Charge air coolant too low Refer to section E 012.05 AH Refer to section E 012.05 AH
Charge air coolant temperature
transmitter faulty Temperature transmitter and wiring
dialogue unit / fault recorder or
fault display via flashing light Repair; replace if necessary. Refer to
DDEC III/IV Single ECM Troubleshooting
(6SE497) and/or
DDEC Multi-ECM
Troubleshooting Guide (6SE496)
Table 31 Charge Air Coolant Temperature Too High
E 012.05 AG – CHARGE AIR COOLANT TEMPERATURE TOO LOW
Start with the first probable cause for charge air coolant temperature too low listed in Table 32,
perform the check and take the suggested remedial action. If the problem persists, go to the next
probable cause, perform the check, etc., until troubleshooting is complete.
Probable Causes Check Remedial Action
Charge air coolant thermostat
faulty Charge air coolant thermostat Replace
Charge air coolant temperature
transmitter not working Temperature transmitter and wiring
with dialogue unit / fault recorder or
fault display via flashing light Repair; replace if necessary.
Refer to
DDEC III/IV Single ECM
Troubleshooting (6SE497) and/or
DDEC Multi-ECM Troubleshooting
Guide (6SE496)
Table 32 Charge Air Coolant Temperature Too Low
All information subject to change without notice.
E -40
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