Tag: Detroit Diesel Engine Repair

Detroit Diesel GHG17 Low Pressure Fuel System – Measuring Fuel Pressure Using Fuel System Integrity Check – Two-Filter Fuel System

 

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DDDL 8.19 2024

Nexiq USB Link 2 Adapter

 

Note : KM59 GEN1 fuel filter module return lines are secured to the module with banjo bolts.

Note : KM63 GEN2 fuel filter module return lines are secured to the module with a mounting plate attached to the PLV return line.

This procedure is used to measure and record fuel pressures in the low pressure side of the fuel system at given locations and rpm. Once completed, it will provide electronic results that can be viewed in a DDDL log file.

Note : Step 1 only applies to the KM59 Gen 1 fuel system. For a KM63 Gen 2 fuel system, begin the test with step 2.

Check as follows:

1 For KM59 Gen 1 systems only , install tool number W470589099100 Fuel Pressure Test Plug into the high pressure flange. Refer to Tool Letter 11 TL-9 for installation instructions.

2 For KM59 Gen 1 fuel systems and KM63 Gen 2 fuel systems, install tool number W470589149100 Filter Cap w/Test Port. Refer to Tool Letter 12 TL-8 for installation instructions. Inspect the pre-filter at this time. If the filter is plugged, clean or replace only this filter as needed.

3 Connect the DDDL to the vehicle and turn the ignition on. From the “Service Routines,” open the Fuel System Integrity Check tab.

4 Start the Fuel System Integrity Check routine and follow the instructions in DDDL.

5 Monitor the low pressure pump outlet (LPPO) fuel pressure, the fuel compensation pressure and the low pressure pump inlet (LPPI) fuel pressure while the Fuel System Integrity Check routine is running.

6 Add the LPPI fuel pressure values as a user event into the log file. Press CTRL, SHIFT, and space bar at the same time, and add the pressure reading from the gauge.

7 Compare the recorded fuel pressure values with the normal fuel pressures.

8 Return to original troubleshooting. Remove the special tools from the engine after troubleshooting is completed

Detroit Diesel DEF Quantity Test provides the ability to troubleshoot the diesel exhaust fluid (DEF) dosing system by inspecting the nozzle spray pattern and measuring the amount of DEF dispensed. It may be used for diagnosing problems with DEF supply, pump pressure, metering unit, clogging, pressure limiting unit, vehicle air, and low NOx efficiency.This instruction show you guide on how to use JPRO Diagnostic software to do DEF quantity test for Detroit Diesel DD13,DD15 and DD16.

 

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JPRO Noregon Commercial Fleet Diagnostics 2024

Noregon JPRO DLA+ 2.0 Adapter

 

The DEF Quantity Test is supported on:
✓ Detroit Diesel EPA 10 to EPA 13 for all DD13, DD15 and DD16 engines
✓ Detroit Diesel GHG17 and newer with Engine Software Version:

o App_040B	o App_040D	o App_040E	o App_0410
o App_0411	o App_2104	o App_2105	o App_2107
o App_2108	o App_2109

and ACM Software Version:

o acm_0x0232	o acm_0x0236	o acm_0x023E	o acm_0x0250
o acm_0x024E

 

1.Select the DEF Quantity Test and press Enter or the Start button.

2.The DEF Quantity Test dialog displays, providing important information about steps to take before running the test.

3.Select the Next button once all instructions have been read and followed.
4. Ensure all preconditions have been met.
5. Select the Start button to begin the test. The DEF Doser should start pumping out DEF fluid into the measuring container over a period of 4 minutes.

6.The dialog displays examples of correct and problem spray patterns that can be detected by observing the valve as it dispenses DEF into the collection container.

7.When the test is completed, results information is displayed, including steps to take depending on how much DEF was dispensed.
8. If desired, you may select the Rerun button to rerun the test.
9. Once the test has been completed, click the Exit button to return to the test selection dialog.

 

This instruction show you guide on how to solve/optimize idle will arm but will not restart the engine for Detroit EPA07 GHG14 DDEC VI 10.

 

Preparations:

DDDL 8.18 2023

Nexiq USB Link 2 Adapter

 

Procedures:

Check as follows:

1 Is MCM fault code SPN 1663 /FMI 7 present?

1aYes; troubleshoot this code first.

1b No; Go to step 2.

 

2 Was the CPC recently programmed?

2a Yes; check for proper CPC parameter settings. Refer to section “Optimized Idle” of the A&I Manual (See table below).

2b No; Go to step 3.

 

3 Using DiagnosticLink, verify the operation of the Optimized Idle Safety Loop and the Vehicle Speed Sensor (VSS). Under Instrumentation, go to the Chart tab and select the following on the chart:

 

• DSL: Parking Brake
• DSL: Hood Tilt Switch
• DSL: Neutral Switch
• ASL: Road Speed

Cycle each switch and monitor their functionality. Monitor the Road Speed; it should read zero when the vehicle is stationary.

Was a fault with either the Optimized Idle Safety Loop or VSS found?

3a Yes; repair as necessary.

3b No; Go to step 4.

 

4 Is the vehicle equipped with an Auxiliary Power Unit (APU) or ParkSmart?

4a Yes; vehicles with an APU or ParkSmart may not use Optimized Idle to control the cab temperatures. If this is the customer’s complaint, refer to the APU or ParkSmart operation instructions.

4b No; Go to step 5.

 

5 Check the Optimized Idle Thermostat settings; Refer to section “Thermostat Operation” of the Optimized Idle User Manual (DDC-SVC-MAN-0019) . Is the Optimized Idle Thermostat properly configured?

5a Yes; install a test CPC. Go to step 6.

5b No; Refer to section “Thermostat Operation” of the Optimized Idle User Manual (DDC-SVC-MAN-0019) . Verify repair.

 

6 Will Optimized Idle work correctly with the test CPC?

6a Yes; replace the CPC.

6b No; Go to step 7.

 

7 Set the Optimized Idle Thermostat mode to cool the cab and put the vehicle on Optimized Idle mode. Using a heat gun, apply heat to the Optimized Idle Thermostat Skin Temperature sensor; refer to OEM literature for sensor location. Did Optimized Idle start the engine to cool the cab?

7a Yes; Refer to section “Optimized Idle” of the A&I Manual (See table below) for proper Optimized Idle parameter configuration

7b No; Go to step 8.

 

8.Monitor the Optimized Idle Thermostat temperature reading while applying heat to the sensor. Is the reading on the Thermostat display accurate?

8a Yes; replace the Optimized Idle Thermostat.

8b No; Go to step 9.

 

9 Disconnect the Optimized Idle Thermostat electrical connector and measure the resistance between pin 3 of the Optimized Idle Thermostat connector, harness side and the sensor ground circuit of the Skin Temperature sensor harness side connector. Is the resistance less than five ohms?

9a Yes; Go to step 10.

9b No; repair the circuit.

 

10 Measure the resistance between pin 1 of the Optimized Idle Thermostat connector, harness side and the sensor signal circuit of the Skin Temperature sensor harness side connector. Is the resistance less than five ohms?

10a Yes; replace the Optimized Idle Thermostat.

10b No; repair the circuit.