Audio System DTC Troubleshooting: 2623
Honda HRV Hybrid DTC 2623: Remote Tuner Diag
How to use this manual
Before you troubleshoot, review the How to Troubleshoot.
NOTE:
Check the connectors for poor connections or loose terminals.
■ Overview
If the audio unit indicates NG in the Remote Tuner diagnosis (the Remote Tuner icon is red in the System Links), the audio unit determines an abnormality and stores the DTC.
■ Inspection Outline
The components to be tested are indicated by a dotted line.
Inspection Items
- a External Circuit : TUNER_6V, TUNER_9V, TUNER_RS485+, TUNER_RS485-, TUNER_GND, TUNER_RS485_SH Circuit Inspection
- b. Tuner Unit: Tuner Unit Inspection
- c. Audio Unit: Audio Unit Inspection
a. TUNER_6V, TUNER_9V, TUNER_RS485+, TUNER_RS485-, TUNER_GND, TUNER_RS485_SH Circuit Inspection
■ Test Procedure
- Preparation
Audio unit connector C (16P): disconnected
Tuner unit connector A (10P): disconnected - Procedure
Perform the inspection according to the following table.
NOTE:
Refer to the Open/Shorted Wire Inspection Description for the method to inspect the shorted circuit below, then start to inspect according to circumstances.
■ Results
If abnormal, there is a problem in the circuit.
b.Tuner Unit Inspection
NOTE:
Since there is no direct method to test the inspection item, troubleshooting is performed using a known-good component.
■ Test Procedure
Install a known-good tuner unit and attempt to reproduce the failure.
■ Results
If the failure is reproduced, there is a problem with other related components.
If the symptom/DTC goes away, the tuner unit must be faulty.
c. Audio Unit Inspection
■ Test Procedure
If the other inspection item(s) indicated a normal condition, then it is determined that the remaining audio unit is the cause.
■ Results
There is a problem with the audio unit.
■ Confirmation Procedure
1.Turn the vehicle to the ON mode.
