Section 74.2
Troubleshooting Flash Code 82, PID 411/FMI 4
The following procedure will troubleshoot Flash Code 82 p 411/4.
For all EGR related codes, always perform the “Exhaust Gas Recirculation System Basic Checks.” Refer to "20.18 Exhaust Gas Recirculation System Basic Checks for Series 60 Engines" .
Section 74.2.1
Check EGR Delta-Pressure Sensor
Perform the following steps to check the EGR Delta-Pressure Sensor:
- Unplug the EGR Delta-P Sensor connector.
- Unplug the Engine Harness connector.
- Install a jumper wire between cavities 2 and 3 at the EGR Delta-Pressure Sensor: See Figure
"EGR Pressure Sensor Wiring"
.
Figure 1. EGR Pressure Sensor Wiring
- Measure resistance between cavities E-38 and E-15. See Figure
"EGR Pressure Sensor Wiring"
.
- If the resistance measurement is less than or equal to 5 Ω, Refer to "74.2.2 Check for Open" .
- If the resistance measurement is greater than 5 Ω, circuit E-38 or E-12 is open. Repair the open and refer to "74.2.2.1 Verify Repair" .
Section 74.2.2
Check for Open
Perform the following steps to check for an open.
- Remove jumper cable.
- Measure resistance between cavities E-38 and E-15. See Figure
"EGR Pressure Sensor Wiring"
.
- If the resistance measurement is less than 5 Ω, E-38 is shorted to E-15. Repair short and refer to "74.2.2.1 Verify Repair" .
- If the resistance measurement is greater than 5 Ω, replace the sensor and refer to "74.2.2.1 Verify Repair" .
Section 74.2.2.1
Verify Repair
Perform the following steps to verify repairs for the EGR temperature or pressure sensor:
- Connect all connectors.
- Start and run the engine.
- Road test the engine.
- If code 82 was not logged, no further troubleshooting is required.
- If code 82 was logged, please review this section from the first step to find the error. Refer to "74.2.1 Check EGR Delta-Pressure Sensor" . If this is the second time through the procedure, call the Detroit Diesel Customer Support Center (313–592–5800) or try a test ECM/ECU.
Series 60 DDEC V Troubleshooting Guide - 6SE570 |
Generated on 10-13-2008 |