A2 Automatic
Transmission
Review Answers
Reading Your Results: A2 Automatic Transmission, Test 2
This test comes at the same content areas from the bench and the wiring harness rather than the driver's seat. There are more questions about how a measurement is taken, what a scan tool value actually proves, and what a pan full of debris is telling you, so the questions you missed here point somewhere different than Test 1's would.
If you missed the questions about what a scan tool value proves
Several questions on this test turn on the difference between what the module commanded and what the transmission actually did, and that gap is where most modern transmission diagnosis lives. Commanded line pressure of 180 psi against a measured pressure well below it means the module is asking correctly and the hydraulic side is not delivering, which sends you to a gauge rather than to a wiring diagram. Output shaft speed reading zero while the vehicle is moving at 35 mph is an impossible value, so the sensor or its circuit is the fault rather than the transmission. A solenoid that measures within its resistance specification is proven electrically and proven nothing hydraulically, since a solenoid can pass a resistance check and still fail to move. When you miss one of these, check whether you trusted a value instead of asking what the value was capable of proving.
If you missed the questions with a measurement and a limit
Three questions here give you numbers and a specification, and each is only valid under a condition the question expects you to know.
If you missed the procedure questions
Three questions here are about doing the job in an order that will not create a new problem. Valve body fasteners are torqued in sequence to specification because the body is a stack of machined surfaces and separator plates that will warp or cross-leak if it is drawn down unevenly. A voltage drop test on a solenoid ground is taken across the section being evaluated with current flowing, since a reading taken with the circuit off will always look perfect no matter how bad the connection. Lip seals are installed with the lip facing the pressure they are meant to hold, and lubricated rather than dry, because a dry lip rolls under and tears as the shaft goes through it. On the exam these questions are asking whether you know what the step is protecting against.
If you missed the EXCEPT and LEAST likely questions
There are four on this test, and the method is the same one that works on the real exam. Identify what the three real causes share before you look for the odd one out. On the pan debris question, the material you find tells you which family of parts is wearing, so three answers come from that family and one does not. On the vibration-above-50-mph question, three answers are speed-related rotating faults and one is not. Naming the shared trait first is faster and far more reliable than working through four options one at a time.