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Thermo Control Amp.

WARNING: This page is about a different car, the 2003 Nissan Altima. However, it is still accessible from the selected car via links, so may be relevant.
  1. Run engine and operate A/C system.
  2. Connect the voltmeter from harness side.
  3. Check the thermo control amp. operation as shown in Fig 1.
    Fig 1: Thermo Control Amp. Operation Table
    G02162473Courtesy of NISSAN MOTOR CO., U.S.A.
    Fig 2: Identifying Thermo Control Amp
    G02162474Courtesy of NISSAN MOTOR CO., U.S.A.