ASCD Pump

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

Fig 1: Checking Automatic Speed Control Device Pump
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Continuity Table
Courtesy of NISSAN MOTOR CO., U.S.A.

A vacuum pressure of at least -5.8 psi (-40 kPa) should be generated.