AudioPilot(tm) Does Not Work

1. Turn ignition switch ON.
2. Check voltage signal between BOSE speaker amp. harness connector B231 terminal 3 (W) and 4 (R/L) with CONSULT-II or oscilloscope, when inputting some sounds (voice, etc.) toward the microphone.
   Fig 1: Checking Voltage Signal Between BOSE Speaker Amp. Harness Connector B231 Terminal 3 (W) And 4 (R/L)

   Courtesy of NISSAN MOTOR CO., U.S.A.
   Fig 2: Reference Value Graph

   Courtesy of NISSAN MOTOR CO., U.S.A.
   1. 3 - 4 

Does the voltage signal change with sounds?

1. Yes - Replace BOSE speaker amp.
2. No - GO TO 2.

1. Turn ignition switch OFF.
2. Disconnect BOSE speaker amp. and microphone connector.
3. Check continuity between BOSE speaker amp. harness connector B231 terminal 3 (W) and microphone harness connector M73 terminal 1 (W).
   1. Continuity should exist. 
4. Check continuity between BOSE speaker amp. harness connector B231 terminal 3 (W) and ground.
   Fig 3: Checking Continuity Between BOSE Speaker Amp. Harness Connector B231 Terminal 3 (W) And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
   1. Continuity should not exist. 

OK or NG

1. OK - GO TO 3.
2. NG - Repair or replace harness.

1. Check continuity between BOSE speaker amp. harness connector B231 terminal 4 (R/L) and microphone harness connector M73 terminal 2 (L/R).
   Fig 4: Check Continuity Between BOSE Speaker Amp. Harness Connector B231 Terminal 4 (R/L) And Microphone Harness Connector M73 Terminal 2 (L/R)

   Courtesy of NISSAN MOTOR CO., U.S.A.
   1. Continuity should exist. 
2. Check continuity between BOSE speaker amp. harness connector B231 terminal 4 (R/L) and ground.
   1. Continuity should not exist. 

OK or NG

1. OK - Replace microphone.
2. NG - Repair or replace harness.