The code is typically an EGR Low Flow (System Leak Detected).
EGR Low Flow Leak Check
Check as follows:
- Turn the ignition ON (key ON, engine OFF).
- Using DDDL 7.X, perform the Turbo Hysteresis test.
- Check EGR valve operation. Command PWM1 to 50% while monitoring "EGR Actual Position." Does "EGR Actual Position" read between 48-52%?
- Command PWM1 to 90% while monitoring "EGR Actual Position." Does "EGR Actual Position" read between 88-92%?
- Turn the ignition OFF.
- Disconnect EGR Valve Harness connector.
- Inspect connector for damaged, corroded pins.
- If damage is found, repair as necessary.
- If no damaged pins are found, replace the EGR Valve. Refer to "126.96.36.199 Verify Repairs" .
- Remove and inspect air filter for plugging.
- Inspect all EGR delivery pipes for leaks or blockage.
- Service intake air system as necessary. Refer to "188.8.131.52 Verify Repairs" .
- If no issues are found with EGR delivery pipes, obtain DDDL log file of failure and contact the Detroit Diesel Customer Support Center (313–592–5800) for further instruction.
Verify repairs as follows:
- Turn ignition OFF.
- Reconnect any electrical connections that were disconnected to perform the diagnosis.
- Clear codes with DDDL 7.0 or latest version.
- Start and bring engine up to operating temperature (over 140°F/60°C).
- 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.
|EPA07 Series 60 DDEC VI Troubleshooting Guide - 6SE567|
|Generated on 10-13-2008|