Detroit Diesel MBE 4000 DDEC VI Troubleshooting Manual page 287

28.1 SPN 110/FMI 0
The diagnostic condition is typically engine coolant temperature high.
28.1.1 Multiple Code Check
Perform the following steps to check for multiple codes
1. Turn the ignition ON (key ON, engine OFF).
2. Plug in the diagnostic tool.
3. Read active codes.
[a] If fault 110/3 is active in addition to 110/0, refer to section 28.3.
[b] If fault 110/4 is active in addition to 110/0, refer to section 28.4.
[c] If fault 111/1 is active in addition to 110/0, refer to section 29.1.
[d] If only fault code 110/0 is active, refer to section 28.1.2.
28.1.2 System Checks to Resolve Fault
Perform the following steps to resolve a coolant temperature high fault. Repair or replace, as
required.
1. Check for coolant loss.
2. Check for blockage in radiator and charge air cooler.
3. Check fan belt condition (slippage).
4. Check for proper location of fan shroud.
5. Check for proper radiator hose condition (no collapsed hoses).
6. Check for proper viscous fan operation.
7. Once checks and repairs are finished, refer to section 28.1.2.1.
28.1.2.1 Verify Repairs
Verify repairs as follows:
1. Turn ignition OFF.
2. Reconnect any electrical connections that were disconnected to perform the diagnosis.
3. Clear codes with DDDL 7.0 or latest version.
4. Start and bring engine up to operating temperature (over 140°F/60°C).
5. Verify operation is satisfactory and no warning lamps illuminate. If warning lamps
illuminate, troubleshoot the codes. If assistance is required, call the Detroit Diesel
Customer Support Center at 313–592–5800.
All information subject to change without notice.
6SE568 Copyright © PRELIMINARY 2007 DETROIT DIESEL CORPORATION
(Rev. )
MBE 4000 DDEC VI TROUBLESHOOTING GUIDE
28-3