1|Page
Automotive Electrical and Engine Performance, 9th
Edition by James Halderman Latest Update 2026
2027 ( BRANDNEW!!!!)
Which two components or systems are disconnected from each other
when the Power Control Relay (PCR) is opened? ......ANSWER......Not
Auxiliary battery and the vehicle's entire electrical system
Not Main battery and starter cable
Not Main battery and the vehicle's entire electrical system
Auxiliary battery and starter cable
To remote start a vehicle, the key fob button must be pressed two times
in how many seconds? ......ANSWER......Not 2
5
Which of the following modules is responsible for validating the key fob
using Low-Frequency (LF) antennas? ......ANSWER......Radio Frequency
Hub Module (RFHM
How does an Electronic Voltage Regulator (EVR) maintain voltage in the
electrical system? ......ANSWER......Not Opening and closing the
generator output circuit using the Power Control Relay (PCR)
pg. 1
,2|Page
Adjusting the signal on the Pulse-Width Modulated (PWM) generator
field control circuit
Which of the following is the primary Electronic Control Unit (ECU) for
the Engine Stop/Start (ESS) system? ......ANSWER......Not Body Control
Module (BCM)
Powertrain Control Module (PCM)
Which of the following describes the purpose of opening the Power
Control Relay (PCR)? ......ANSWER......Stabilize battery voltage during
engine starting events
Under which of the following conditions does the Power Control Relay
(PCR) open? ......ANSWER......When the engine is cranking during a
Stop/Start event
How is State of Charge (SOC) represented? ......ANSWER......Battery
charge as a percentage
The Power Control Relay (PCR) is located between which of the two
following components? ......ANSWER......
Which module authenticates a request from the Telematics Box Module
(TBM) to remote start the vehicle? ......ANSWER......Security Gateway
(SGW)
pg. 2
, 3|Page
What type of ignition system only requires the keyfob to be located in
the vehicle? ......ANSWER......Keyless go
Why is a smart generator's set point voltage regulated to the lowest
possible value when accelerating? ......ANSWER......Decrease the
generators passive torque
Why is a smart generator's set point voltage regulated to the highest
possible value when decelerating? ......ANSWER......Not Increase the
generator's passive torque
What is the purpose of the transmission Hydraulic Impulse Storage (HIS)
accumulator found on vehicles equipped with an Engine Stop/Start
(ESS) system? ......ANSWER......Eliminate hydraulic fluid build-up time
and clutch engagement delay after a stop/start event
What is the primary component used to stabilize voltage in Engine
Stop/Start (ESS) vehicles equipped with a single-battery system?
......ANSWER......Not In-rush Current Relay
Voltage Stabilization Module (VSM)
Which component isolates the main battery from the auxiliary battery
during Stop/Start events on dual-battery Engine Stop/Start (ESS)
systems? ......ANSWER......Power Control Relay (PCR)
pg. 3
Automotive Electrical and Engine Performance, 9th
Edition by James Halderman Latest Update 2026
2027 ( BRANDNEW!!!!)
Which two components or systems are disconnected from each other
when the Power Control Relay (PCR) is opened? ......ANSWER......Not
Auxiliary battery and the vehicle's entire electrical system
Not Main battery and starter cable
Not Main battery and the vehicle's entire electrical system
Auxiliary battery and starter cable
To remote start a vehicle, the key fob button must be pressed two times
in how many seconds? ......ANSWER......Not 2
5
Which of the following modules is responsible for validating the key fob
using Low-Frequency (LF) antennas? ......ANSWER......Radio Frequency
Hub Module (RFHM
How does an Electronic Voltage Regulator (EVR) maintain voltage in the
electrical system? ......ANSWER......Not Opening and closing the
generator output circuit using the Power Control Relay (PCR)
pg. 1
,2|Page
Adjusting the signal on the Pulse-Width Modulated (PWM) generator
field control circuit
Which of the following is the primary Electronic Control Unit (ECU) for
the Engine Stop/Start (ESS) system? ......ANSWER......Not Body Control
Module (BCM)
Powertrain Control Module (PCM)
Which of the following describes the purpose of opening the Power
Control Relay (PCR)? ......ANSWER......Stabilize battery voltage during
engine starting events
Under which of the following conditions does the Power Control Relay
(PCR) open? ......ANSWER......When the engine is cranking during a
Stop/Start event
How is State of Charge (SOC) represented? ......ANSWER......Battery
charge as a percentage
The Power Control Relay (PCR) is located between which of the two
following components? ......ANSWER......
Which module authenticates a request from the Telematics Box Module
(TBM) to remote start the vehicle? ......ANSWER......Security Gateway
(SGW)
pg. 2
, 3|Page
What type of ignition system only requires the keyfob to be located in
the vehicle? ......ANSWER......Keyless go
Why is a smart generator's set point voltage regulated to the lowest
possible value when accelerating? ......ANSWER......Decrease the
generators passive torque
Why is a smart generator's set point voltage regulated to the highest
possible value when decelerating? ......ANSWER......Not Increase the
generator's passive torque
What is the purpose of the transmission Hydraulic Impulse Storage (HIS)
accumulator found on vehicles equipped with an Engine Stop/Start
(ESS) system? ......ANSWER......Eliminate hydraulic fluid build-up time
and clutch engagement delay after a stop/start event
What is the primary component used to stabilize voltage in Engine
Stop/Start (ESS) vehicles equipped with a single-battery system?
......ANSWER......Not In-rush Current Relay
Voltage Stabilization Module (VSM)
Which component isolates the main battery from the auxiliary battery
during Stop/Start events on dual-battery Engine Stop/Start (ESS)
systems? ......ANSWER......Power Control Relay (PCR)
pg. 3
