Door Mirror Defogger Power Supply Circuit Check

CHECK FUSE
Check if any of the following fuses for Fuse block (J/B) are blown.

Fig 1: Identifying Fuse Numbers
Courtesy of NISSAN MOTOR CO., U.S.A.

NOTE: Refer to "COMPONENT PARTS AND HARNESS CONNECTOR LOCATION ".

OK or NG
1. OK >> GO TO 2.
2. NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse, refer to "POWER SUPPLY ROUTING ".
CHECK DOOR MIRROR DEFOGGER RELAY POWER SUPPLY CIRCUIT 1
1. Turn ignition switch OFF.
2. Remove door mirror defogger relay.
3. Turn ignition switch ON.
4. Check voltage between door mirror defogger relay connector and ground.
  
  Fig 2: Voltage Specifications Between Door Mirror Defogger Relay Connector And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 3: Checking Voltage Between Door Mirror Defogger Relay Connector And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK >> GO TO 3.
2. NG >> Repair or replace between harness rear window defogger and door mirror defogger relay and door mirror defogger relay.
CHECK DOOR MIRROR DEFOGGER RELAY
Check continuity between door mirror defogger relay terminals 3 and 5.

Fig 4: Continuity Specifications Between Door Mirror Defogger Relay Terminals 3 And 5
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK >> GO TO 4.
2. NG >> Replace door mirror defogger relay.
Fig 5: Checking Door Mirror Defogger Relay
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK DOOR MIRROR DEFOGGER RELAY GROUND HARNESS
1. Turn ignition switch OFF.
2. Check continuity between door mirror defogger relay connector B10 terminal 1 and ground.
  1. 1 (B) - Ground :Continuity should exist
OK or NG
1. OK >> GO TO 5.
2. NG >> Repair or replace harness between door mirror defogger relay and ground.
CHECK DOOR MIRROR DEFOGGER RELAY POWER SUPPLY CIRCUIT 2
Check voltage between door mirror defogger relay connector B10 terminal 5 and ground.
1. 5 (P/B) - Ground : Battery voltage
Fig 7: Checking Voltage Between Door Mirror Defogger Relay Connector B10 Terminal 5 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK >> GO TO 6.
2. NG >> Repair or replace harness between door mirror defogger relay and fuse.
CHECK DOOR MIRROR DEFOGGER POWER SUPPLY CIRCUIT
1. Connect door mirror defogger relay.
2. Turn ignition switch ON.
3. Check voltage between door mirror connector D2 (driver side) or D32 (passenger side) terminal 6 and ground.
  
  Fig 8: Voltage Specifications Between Door Mirror Connector D2 (Driver Side) Or D32 (Passenger Side) Terminal 6 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 9: Checking Voltage Between Door Mirror Connector D2 (Driver Side) Or D32 (Passenger Side) Terminal 6 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK >> INSPECTION END.
2. NG >> Repair or replace harness between malfunction door mirror and door mirror defogger relay.