final adv electrical
A customer complains that the turn signal indicator flashes unusually fast when the turn signal switch is in a left turn position. Technician A says the left side turn signal flasher is defective. Technician B says one of the left turn signal bulbs is the wrong wattage. Who is correct?
B only
Technician A says a lamp may contain only one filament. Technician B says some lamps contain two filaments. Who is correct?
both A and B
Technician A says some types of sensors provide input to the computer by modifying or controlling a reference voltage (Vref) signal. Technician B says some types of sensors provide a voltage generated signal. Who is correct?
both A and B
Technician A uses a ohmmeter to diagnose gauge problems. Technician B uses a scan tool to test the ECT [engine coolant temperature] sensor. Who is correct?
both A and B
Which of the following does NOT use a magnetic pulse generator [PM generator]? crankshaft position sensor wheel speed sensor throttle position sensor vehicle speed sensor
throttle position sensor
A digital speedometer constantly reads zero mph. Technician A says the problem may be the vehicle speed sensor. Technician B says the problem may be the throttle position sensor. Who is correct?
A only
A technician is diagnosing an HID headlight that intermittently turns on and off. Technician A says the problem is a worn out HID arc tube{bulb]. Technician B says the problem is a blown headlight fuse. Who is correct?
A only
Composite headlights are being discussed. Technician A says they have replaceable bulbs. Technician B says a cracked or broken lens will prevent the operation of a composite headlamp. Who is correct?
A only
Occupant classification sensors are being discussed. Technician A says the sensor uses a silicone-filled bladder in the seat cushion that has a pressure sensor connected to it. Technician B says that piezoresistive sensors are located between the seat track and the floor. Who is correct?
A only
Technician A says diodes are semiconductors. Technician B says diodes function as electronic circuit relays. Who is correct?
A only
Technician A says the condition of the vehicle's springs and shocks should be checked before aligning the headlamps. Technician B says the vehicle should have a full tank of fuel when its headlamps are being adjusted. Who is correct?
A only
Technician A says transistors are semiconductors. Technician B says transistors function as one-way valves for current flow. Who is correct?
A only
Technician A uses the vehicle's built-in bubble level to adjust headlight vertical aim. Technician B uses a screen at ten feet from the vehicle to aim headlights. Who is correct?
A only
The oil pressure light stays on whenever the engine is running. The oil pressure has been checked and it meets specifications. Technician A says a short to ground in the circuit between the indicator light and the pressure switch could be the cause. Technician B says an open in the pressure switch could be the cause. Who is correct?
A only
A technician is diagnosing a vehicle for slow wiper operation. When the linkage from the motor is disconnected and the wiper motor is turned on, the motor runs normally. Technician A says the motor has a poor ground connection. Technician B says the linkage is binding. Who is correct?
B only
Actuators (outputs) are being discussed. Technician A says they are variable resistance/ reference-type switches, and thermistors. Technician B says they convert electrical current into mechanical action. Who is correct?
B only
Cruise control systems are being discussed. Technician A says the cruise control system uses a governor valve operated by automatic transmission fluid [ATF] pressure to control the throttle. Technician B says vehicles that use electronic throttle control [throttle by wire] do not require a separate cruise control module, stepper motor, or cable to control engine speed. Who is correct?
B only
Park distance control systems are being discussed. Technician A says that as the distance between the vehicle and an object becomes closer, the intervals between the warning tones become longer. Technician B says that some systems have both visual and audible warnings. Who is correct?
B only
Technician A says on all vehicles, the fuse that protects the backup light system is the same fuse that protects the turn signal system. Technician B says vehicles equipped with automatic transmissions use a combination backup/neutral start switch. Who is correct?
B only
Transistor operation is being discussed. Technician A says that when the base of a PNP is connected to ground, the transistor is turned off. Technician B says that when the base of an NPN transistor has a positive voltage applied to it, the transistor is turned on. Who is correct?
B only
Analog gauges use digital displays of numbers.
False
Electronic odometer display readings are stored in the computer's RAM.
False
A technician is testing a power seat that operates slower than normal. The dome light noticeably dims while operating the power seat motors. The problem is likely ______.
binding in the seat mechanism
A six-way power seat is NOT operating in any switch position. Technician A says to check the circuit breaker. Technician B says there may be excessive resistance in the electrical circuit. Who is correct?
both A and B
All gauges do not work. Technician A says the connection to the instrument cluster may be open. Technician B says the cluster's IVR may be open. Who is correct?
both A and B
Energy storage is being discussed. Technician A says a battery stores energy chemically. Technician B says a capacitor stores energy in an electrostatic field between two electrodes. Who is correct?
both A and B
Semiconductors are being discussed. Technician A says a semiconductor can be used as a conductor. Technician B says a semiconductor can be used as an insulator. Who is correct?
both A and B
Smart keys are being discussed. Technician A says the transponder on some systems must be inserted into a slot in the instrument panel before the engine can be started. Technician B says some smart keys can unlock the doors and allow the engine to be started when the transponder is within a few feet of the vehicle. Who is correct ?
both A and B
Technician A says a Hall-effect switch uses a semiconductor, permanent magnet, and shutter wheel to measure shaft speed. Technician B says an engine coolant temperature sensor is basically a thermistor. Who is correct?
both A and B
Technician A says an oil pressure sending unit may be tested with an ohmmeter. Technician B says an engine coolant temperature sending unit may be tested with an ohmmeter. Who is correct?
both A and B
Technician A says blinking headlights can be caused by the self-resetting circuit breaker installed between battery and the headlight switch, that is kicking out due to a short. Technician B says flickering vehicle lights can be caused by a loose electrical connection. Who is correct?
both A and B
Technician A says most digital temperature gauges are bar-type displays. The number of illuminated bars varies according to the current flow from the sending unit. Technician B says some warning lights are triggered by the PCM and BCM. Who is correct?
both A and B
Technician A says on some vehicles, if the turn signals on one side blink faster than normal, the problem may be a burned out bulb. Technician B says on some vehicles, if all of the turn signals don't operate, the problem may be a defective flasher. Who is correct?
both A and B
Technician A says the cruise control system disengages if the brake pedal is depressed. Technician B says the cruise control system is disengaged if the clutch pedal is depressed. Who is correct?
both A and B
Technician A says the low fuel warning indicator light is turned on when the fuel level drops below one-eighth of the tank capacity. Technician B says the fuel gauge sending unit is normally combined with the electric fuel pump. Who is correct?
both A and B
Technician A says when positive voltage is applied to the base of an NPN transistor, the transistor is turned on. Technician B says when an NPN transistor is turned on, current flows through the collector and emitter of the transistor. Who is correct?
both A and B
The reasons for slower than normal wiper operation are being discussed. Technician A says the problem may be in the mechanical linkage. Technician B says there may be excessive resistance in the electrical circuit. Who is correct?
both A and B
Windshield wiper motors are being discussed. Technician A says wiper motors are permanent magnet type motors. Technician B says wiper motors are electromagnet field type motors. Who is correct?
both A and B
Technician A says that the worn brake pad warning indicator light is triggered by a switch on the back of the brake pedal. Technician B says the worn brake pad warning indicator is triggered by a switch on the master cylinder. Who is correct?
neither A nor B