1. Check ASCD Pump

1. Disconnect ASCD pump connector.
2. Measure resistance between ASCD pump terminals 1 and 2, 3, 4.

Fig 1: ASCD Pump Terminal Resistance Chart

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

Fig 2: Checking ASCD Pump Terminal Continuity

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

Refer to wiring diagram in SYSTEM WIRING DIAGRAMS .

OK or NG 

1. OK: GO TO 2.
2. NG: Replace ASCD pump.