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HomeShopEngineSPN 411 (MCM) (GHG17)

SPN 411 (MCM) (GHG17)

$20.00

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Description

1. 08 03-17

Additions, Revisions, or Updates

DiagnosticLink users: Please update the troubleshooting guides in DiagnosticLink with this newest version. To update the tool troubleshooting guide, open DiagnosticLink and from the Help – Troubleshooting Guides menu, select the appropriate troubleshooting manual, then click Update.

2. SPN 411/FMI 4 – GHG17

EGR Delta Pressure Sensor Circuit Failed Low

Table 1.

Check as follows:

1. Connect DiagnosticLink ®.

2. Turn the ignition ON (key ON, engine OFF).

3. Check for multiple fault codes. Is fault code SPN 3509/FMI 4 also present?
a. Yes; diagnose fault code SPN 3509/FMI 4.
b. No; Go to step 4.

4. Turn the ignition OFF.

5. Disconnect and inspect the EGR Delta P sensor electrical connector harness side. Is there any corrosion present?
a. Yes; replace the EGR Delta P sensor and the electrical connector. Refer to section “Removal of the Delta P
Sensor”. Verify repair.
b. No; Go to step 6.

6. Is the connector or any of the pins damaged?
a. Yes; Go to step 7.
b. No; Go to step 8.

7. Inspect the EGR Delta P sensor electrical connector component side, is the connector or are any of the pins damaged?
a. Yes; replace the EGR Delta P sensor and the electrical connector. Refer to section “Removal of the Delta P
Sensor”. Verify repair.
b. No; replace the EGR Delta P sensor electrical connector.

8. Turn the ignition ON (key ON, engine OFF).

9. Measure the voltage between pin 1 and pin 2 of the EGR Delta P sensor electrical connector harness side. Is the
voltage between 4.5 and 5.5 volts?
a. Yes. Go to step 11.
b. No; Go to step 10.

10. Measure the voltage between pin 1 and ground. Is the voltage between 4.5 and 5.5 volts?
a. Yes; repair the circuit between pin 1 of the EGR Delta P sensor electrical connector harness side and the splice.
Verify repair.
b. No; repair the circuit between pin 2 of the EGR Delta P sensor electrical connector harness side and the splice.
Verify repair.

11. Use the appropriate flex probes to jump pin 1 and pin 3 of the EGR Delta P sensor electrical connector harness side together.

12. Check the fault codes, does fault code SPN 411 FMI 4 become inactive and fault code SPN 411/FMI 3 become active?
a. Yes; replace the EGR Delta P sensor. Refer to section “Removal of the Delta P Sensor”. Verify repair.
b. No; repair the circuit between pin 3 of the EGR Delta P sensor electrical connector harness side and pin 109 of
the 120-pin MCM electrical connector harness side.

 

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