Spn 411/Fmi 3 - Detroit Diesel EPA07 Series 60 DDEC VI Troubleshooting Manual

39.2

SPN 411/FMI 3

39.1.1.1 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.
39.2 SPN 411/FMI 3
This diagnosis is typically EGR Delta P Sensor circuit failed high.
39.2.1 Open Circuit Check
Check as follows:
1. Disconnect the EGR Delta P Sensor.
2. Measure the resistance across pins 1 and 3 of the EGR Delta P Sensor.
[a] If the resistance is greater than 130 kΩ, replace the EGR Delta P Sensor.
Refer to section 39.2.1.1.
[b] If the resistance is less than 130 kΩ, go to step 3.
3. Measure the resistance between pins 1 and 2 of the EGR Delta P Sensor.
[a] If the resistance is greater than 130 kΩ, replace the EGR Delta P Sensor.
Refer to section 39.2.1.1.
[b] If the resistance is less than 130 kΩ,, go to step 4.
4. Turn the ignition ON (key ON, engine OFF).
5. Measure the voltage between pins 1 and 2 of the EGR Delta P Sensor harness connector.
[a] If the voltage is between 4.5 and 5.5 volts, go to step 7.
[b] If the voltage is less than 4.5 volts, go to step 6.
6. Measure the voltage between pin 1 of the EGR Delta P Sensor harness connector and
ground.
39-4
All information subject to change without notice.
Copyright © 2007 DETROIT DIESEL CORPORATION