Deck 45: Detroit Diesel Electronic Controls Ddec

Question 1

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

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

Answer 1

DDC Series 92 DDEC I

Question 2

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

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

Answer 2

synchronous reference sensor (SRS)

Question 3

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

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

Answer 3

common powertrain controller (CPC)

Question 4

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

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

Question 5

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

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

Question 6

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

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

Question 7

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

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

Question 8

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

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

Question 9

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

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 10

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?

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 11

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?

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

Question 12

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?

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