ASCD Pump

WARNING: This page is about a different car, the 2004 Infiniti Q45 and 2003 Infiniti Q45. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect vacuum hose from ASCD pump and ASCD pump harness connector.
If necessary remove ASCD pump.
Connect vacuum gauge to ASCD pump.
Apply 12V direct current to ASCD pump and check operation.

Fig 1: ASCD Pump Components Operation Chart

Courtesy of NISSAN MOTOR CO., U.S.A.

A vacuum pressure of at least - 40 kPa (- 0.41 kg/cm ² , - 5.8 psi) should be generated.

Fig 2: Checking ASCD Pump Component Operation

Courtesy of NISSAN MOTOR CO., U.S.A.