Diagnosis Procedure
WARNING: This page is about a different car, the 2016 Infiniti Q50. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK REAR MICROPHONE SIGNAL
- Turn ignition switch ON.
- Check the signal between BOSE amp. harness connector as per the following condition.
BOSE amp. Condition Reference value Connector (+) (-) Terminal B55 63 43 When inputting interior sound
Is the inspection result normal?
YES
Replace BOSE amp. Refer to REMOVAL AND INSTALLATION .
NO
GO TO STEP 2 .
- CHECK VOLTAGE BETWEEN BOSE AMP. AND GROUND
- Turn ignition switch OFF.
- Disconnect BOSE amp. harness connector.
- Turn ignition switch ON.
- Check the voltage between BOSE amp. harness connector and ground.
(+) (-) Voltage
(Approx.)BOSE amp. Connector Terminal B55 63 Ground 0 V 43
Is the inspection result normal?
YES
GO TO STEP 3 .
NO
Repair or replace malfunctioning parts.
- CHECK REAR MICROPHONE SIGNAL CIRCUIT FOR OPEN
- Turn ignition switch OFF.
- Disconnect rear microphone harness connector.
- Check the continuity between BOSE amp. harness connector and rear microphone harness connector.
BOSE amp. Rear microphone Continuity Connector Terminal Connector Terminal B55 63 R21 2 Existed 43 1
Is the inspection result normal?
YES
GO TO STEP 4 .
NO
Repair or replace malfunctioning parts.
- CHECK REAR MICROPHONE SIGNAL CIRCUIT FOR SHORT
Check the continuity between BOSE amp. harness connector and ground.
BOSE amp. Ground Continuity Connector Terminal B55 63 Not existed 43 Is the inspection result normal?
YES
Replace rear microphone. Refer to REMOVAL AND INSTALLATION .
NO
Repair or replace malfunctioning parts.