Power Supply And Ground Circuit Check

CHECK MAIN POWER SUPPLY CIRCUIT FOR SMART ENTRANCE CONTROL UNIT
1. Disconnect smart entrance control unit harness connector.
2. Check voltage between smart entrance control unit harness connector M23 terminal 10 (P) or 11 (W/G) and ground.
  
  Fig 1: Checking Voltage Between Smart Entrance Control Unit Harness Connector M23 Terminal 10 (P) Or 11 (W/G) & Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
Refer to Wiring Diagram - Multi - .

Battery voltage should exist.

OK or NG
1. OK : GO TO 2.
2. NG : Check the following.
  - 30A fusible link (letter d, located in fuse and fusible link box)
  - 10A fuse [No. 24, located in fuse block (J/B)]
  - M13 circuit breaker
  - Harness for open or short between control unit and fuse
CHECK IGNITION SWITCH "ACC" CIRCUIT
1. Disconnect smart entrance control unit harness connector.
2. Check voltage between control unit terminal 21 and ground while ignition switch is "ACC".
  
  Fig 2: Checking Voltage Between Control Unit Terminal 21 & Ground While Ignition Switch Is ACC
  Courtesy of NISSAN MOTOR CO., U.S.A.
Refer to Wiring Diagram - Multi - .

Battery voltage should exist.

OK or NG
1. OK : GO TO 3.
2. NG : Check the following.
  - 7.5A fuse [No. 10, located in fuse block (J/B)]
  - Harness for open or short between smart entrance control unit and fuse
CHECK GROUND CIRCUIT FOR CONTROL UNIT
Check continuity between control unit terminal 16 and ground.

Fig 3: Checking Continuity Between Control Unit Terminal 16 & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

Refer to Wiring Diagram - Multi - .

Battery voltage should exist.

OK or NG
1. OK : Power supply and ground circuits are OK.
2. NG : Check ground harness.