Question 1

What does the injector response time (IRT) allow DDEC electronics to do when managing pulse width in EUI-fueled engines such as the Series 60?

Accepted Answer

A)  compensate for minor EUI circuit resistances 
B)  adjust for EUI mechanical wear 
C)  compensate for a failed EUI control cartridge 
D)  adjust EUI firing sequence 
A)  compensate for minor EUI circuit resistances 
B)  adjust for EUI mechanical wear 
C)  compensate for a failed EUI control cartridge 
D)  adjust EUI firing sequence A

Question 2

Which was the first computer controlled, truck diesel engine to be manufactured in North America?

Accepted Answer

A)  DDC Series 92 DDEC I 
B)  DDC Series 50 
C)  DDC Series 60 
D)  DDC Series 40 
A)  DDC Series 92 DDEC I 
B)  DDC Series 50 
C)  DDC Series 60 
D)  DDC Series 40 A

Question 3

In current Detroit Diesel DDEC managed engines, which controller module is responsible for actuating fuel injection operations?

Accepted Answer

A)  motor control module (MCM) 
B)  common powertrain controller (CP
C)  
C)  electronic control unit (ECU) 
D)  distributor unit (DU) 
A)  motor control module (MCM) 
B)  common powertrain controller (CP
C)  
C)  electronic control unit (ECU) 
D)  distributor unit (DU) A

Question 4

When an idle speed balance (ISB) test is run on a DD-Series engine and one injector displays a high negative value, which of the following is the likely cause?

Accepted Answer

A)  injector is compensating for a high injection rate 
B)  injector is compensating for a low injection rate 
C)  injector actuator is drawing excessive current flow 
D)  injector actuator is producing excessive resistance 
A)  injector is compensating for a high injection rate 
B)  injector is compensating for a low injection rate 
C)  injector actuator is drawing excessive current flow 
D)  injector actuator is producing excessive resistance

Question 5

The CEL and SEL both illuminate while a DDEC managed engine is being operated on the highway. Which of the following is also likely?

Accepted Answer

A)  engine will shutdown in 30 seconds 
B)  immediate engine power ramp down 
C)  engine will not restart after shut down 
D)  a DPF regeneration is imminent 
A)  engine will shutdown in 30 seconds 
B)  immediate engine power ramp down 
C)  engine will not restart after shut down 
D)  a DPF regeneration is imminent

Question 6

Which version of DDEC replaced the 2007 release of DDEC VI?

Accepted Answer

A)  DDEC VII 
B)  DDEC VIII 
C)  DDEC IX 
D)  DDEC 10 
A)  DDEC VII 
B)  DDEC VIII 
C)  DDEC IX 
D)  DDEC 10

Question 7

In current Detroit Diesel DDEC managed engines, which controller module occupies the SA 00 address on the J1939 data bus?

Accepted Answer

A)  motor control module (MCM) 
B)  common powertrain controller (CP
C)  
C)  personality module (PM) 
D)  electronic control unit (ECU) 
A)  motor control module (MCM) 
B)  common powertrain controller (CP
C)  
C)  personality module (PM) 
D)  electronic control unit (ECU)

Question 8

When an idle speed balance (ISB) test is run on a DD-Series engine with ACRS and one injector displays a high positive value, which of the following is the likely cause?

Accepted Answer

A)  actuator malfunction 
B)  restricted nozzle 
C)  restricted high pressure line to the injector 
D)  any of the above conditions 
A)  actuator malfunction 
B)  restricted nozzle 
C)  restricted high pressure line to the injector 
D)  any of the above conditions

Question 9

What online service information software must be used when working with current Detroit Diesel engines?

Accepted Answer

A)  power service literature (PSL) 
B)  Detroit Diesel SIS 
C)  DAVIE 
D)  QuickServe OnLine (QSOL) 
A)  power service literature (PSL) 
B)  Detroit Diesel SIS 
C)  DAVIE 
D)  QuickServe OnLine (QSOL)

Question 10

Which of the following is the current DDEC term for the programming required to balance injector fuel flow variables?

Accepted Answer

A)  E-Trim 
B)  Cal codes 
C)  IQCC 
D)  IBQC 
A)  E-Trim 
B)  Cal codes 
C)  IQCC 
D)  IBQC

Question 11

Which sensor is used to signal engine position by camshaft location and confirm the crank position signal in a DDEC Series 60 engine?

Accepted Answer

A)  timing reference sensor (TRS) 
B)  synchronous reference sensor (SRS) 
C)  camshaft position sensor (CPS) 
D)  camshaft speed sensor (CSS) 
A)  timing reference sensor (TRS) 
B)  synchronous reference sensor (SRS) 
C)  camshaft position sensor (CPS) 
D)  camshaft speed sensor (CSS)

Question 12

What software is required to troubleshoot and reprogram current Detroit Diesel engines?

Accepted Answer

A)  Master Diagnostics (M
D)  
B)  Electronic Technician (ET) 
C)  Detroit Diesel Electronic Controls (DDE
C)  
D)  Detroit Diesel Reprogramming Station (DDRS) 
A)  Master Diagnostics (M
D)  
B)  Electronic Technician (ET) 
C)  Detroit Diesel Electronic Controls (DDE
C)  
D)  Detroit Diesel Reprogramming Station (DDRS)

Exam 45: Detroit Diesel Electronic Controls Ddec

What does the injector response time (IRT) allow DDEC electronics to do when managing pulse width in EUI-fueled engines such as the Series 60?

Which was the first computer controlled, truck diesel engine to be manufactured in North America?

In current Detroit Diesel DDEC managed engines, which controller module is responsible for actuating fuel injection operations?

When an idle speed balance (ISB) test is run on a DD-Series engine and one injector displays a high negative value, which of the following is the likely cause?

The CEL and SEL both illuminate while a DDEC managed engine is being operated on the highway. Which of the following is also likely?

Which version of DDEC replaced the 2007 release of DDEC VI?

In current Detroit Diesel DDEC managed engines, which controller module occupies the SA 00 address on the J1939 data bus?

When an idle speed balance (ISB) test is run on a DD-Series engine with ACRS and one injector displays a high positive value, which of the following is the likely cause?

What online service information software must be used when working with current Detroit Diesel engines?

Which of the following is the current DDEC term for the programming required to balance injector fuel flow variables?

Which sensor is used to signal engine position by camshaft location and confirm the crank position signal in a DDEC Series 60 engine?

What software is required to troubleshoot and reprogram current Detroit Diesel engines?

Introduction

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