2. Check ASCD Pump Circuit

WARNING: This page is about a different car, the 2004 Infiniti M45 and 2003 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect ASCD control unit connector.
Check harness for open or short between ASCD control unit terminals and ASCD pump terminals.

Fig 1: ASCD Pump Circuit Terminal & Wire Color Locator Chart

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

Fig 2: Checking ASCD Pump Circuit Continuity

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

Continuity should exist .

OK or NG

OK: GO TO 3.
NG: Repair harness or connector.