What must be checked before performing a starter current draw test?

The most critical aspect to check before performing a starter current draw test is the battery voltage. The battery must be in good condition and fully charged to ensure that the starter motor receives enough power to operate correctly. If the battery voltage is low, it can lead to erroneous readings during the test, as insufficient power may not allow the starter motor to function at optimal capacity. Low voltage can also indicate underlying issues with the battery, which could affect the reliability of the starter and the overall starting system.

Checking fault codes in the computer can provide insight into various vehicle issues, but it doesn't directly relate to the current draw of the starter itself. Similarly, while verifying wiring integrity is important for diagnosing electrical problems, it is generally done as part of preliminary checks or if there are signs of wiring issues. Lastly, fuel system pressure, while vital for engine operation, does not have a bearing on the starter's ability to draw current. Thus, the focus should be on the battery voltage to ensure that the starter system is being tested under the right conditions.