1993 Nissan-Datsun Maxima SE, Standard, RS5F50VFACTORY OEM SERVICE PROCEDURE

Maxima (VE30DE Engine)

  1. Disconnect power transistor connector. Check continuity between terminal "d" and terminals "a", "b", "c", "e", "f" and "g" of power transistor connector (check with polarity in one direction, and then with polarity in opposite direction). See Figure -Figure . If there is no continuity regardless of ohmmeter test lead polarity, replace power transistor.
  2. If there is continuity, connect ohmmeter positive lead to terminal "d" and negative lead to terminals No. 1, 2, 3, 4, 5 and 6. If there is no continuity, replace power transistor. If there is continuity, reverse ohmmeter test lead polarity, checking continuity between the same terminals.
  3. If there is continuity, replace power transistor. If there is no continuity, check continuity between the following terminals, noting ohmmeter test lead polarity:
    • "a" (+) and No. 1 (-).
    • "b" (+) and No. 2 (-).
    • "c" (+) and No. 3 (-).
    • "e" (+) and No. 4 (-).
    • "f" (+) and No. 5 (-).
    • "g" (+) and No. 6 (-).
  4. If there is no continuity, replace power transistor. If there is continuity, reverse ohmmeter test lead polarity and check continuity between terminals listed in previous step. If there is continuity, replace power transistor. If there is no continuity, power transistor is okay.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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