MBE 4000 DDEC VI Troubleshooting – Section 30.2 SPN 111/FMI 3

Section 30.2
SPN 111/FMI 3

This condition is typically an open circuit fault.‪

Section 30.2.1
Open Circuit Check

Perform the following steps to troubleshoot an ECL Sensor open circuit fault:‪

1. Check for multiple codes.
   1. If other faults are active in addition to fault 111/3, troubleshoot the other faults first.
   2. If only fault 111/3 is active, go to step 2 .
2. Check the voltage between the CPC #3 connector (21-pin ) wire 3/11 on the ECL Sensor. See Figure "Engine Coolant Level Sensor Installation for CPC" .
   

   Figure 1. Engine Coolant Level Sensor Installation for CPC

   1. If voltage is about 5 volts, replace ECL sensor. Refer to "30.2.1.1 Verify Repairs" .
   2. If voltage is the same as battery voltage, repair short to wire in ECL Sensor wire 3/11. Refer to "30.2.1.1 Verify Repairs" .
   3. If voltage is 0 volts, go to step 3 .
3. Bridge wire 3/11 to battery ground.
   1. If fault 111/3 is active, repair open circuit in ECL Sensor wire 3/11. Refer to "30.2.1.1 Verify Repairs" .
   2. If fault 111/4 is active, repair open circuit in ECL Sensor wire 3/2. Refer to "30.2.1.1 Verify Repairs" .

Section 30.2.1.1
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.