ch 88
Which of the following is NOT a characteristic of J2534 reprogramming?
A J2534 compliant pass-through system is a non-standardized programming and diagnostic system.
Which of the following steps must immediately precede the step involving checking technical service bulletins?
retrieving diagnostic trouble codes
Which of the following is least likely to be true about on-board diagnostics-II (OBD-II) active tests?
A type B diagnostic trouble code is emission-related and will cause the malfunction indicator lamp (MIL) to be turned on at the first trip if the computer has detected a problem.
Technicians diagnosing a car with an aftermarket scan tool find that they cannot clear the stored diagnostic trouble codes (DTCs) with the scan tool. Technician A suggests removing the negative terminal to the battery as the next step to clear the codes. Technician B suggests disconnecting the fuses to the computer as the next step to clear the codes. In this scenario, which of the following statements is correct?
Both technician A's and B's assessments are accurate.
Two technicians are discussing the retrieval of emission-related data using a scan tool. Technician A states that a global-type scan tool can be used. Technician B states that only a factory-level scan tool will provide the required data. Which of the following statements about this scenario is true?
Both technician A's and B's assessments are accurate.
Which of the following is least likely to be true about factory scan tools?
Factory scan tools work with multiple brands of vehicles.
Two technicians have serviced a vehicle and need to reset the powertrain control module (PCM) before state-mandated emission tests. Technician A suggests clearing the diagnostic trouble codes (DTCs) using a scan tool to reset the PCM. Technician B suggests that the vehicle be driven under similar conditions that were present when the fault occurred. Which of the following statements about this scenario is true?
Only technician B's assessment is accurate.
Which of the following is true about reprogramming a powertrain control module (PCM) chip?
Reprogramming a powertrain control module (PCM) can be done by downloading new calibration files from a personal computer (PC) onto the PCM's memory.
What does verification of repairs involve?
checking for and clearing all diagnostic trouble codes (DTCs)
Race technicians want to program new ignition timing and fuel mapping specifications onto the current powertrain control module (PCM) chip of their team car. They remove the chip from the car, connect it to the workshop personal computer (PC) through an adapter, reprogram it with the new map and timing, reconnect the PCM back into the vehicle, and take it out for a test drive. Which of the following types of programming are they using?
off-board programming
