[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
54 -CHASSIS ELECTRICAL > 54A-CHASSIS ELECTRICAL > HANDS FREE-ECU > SYMPTOM PROCEDURES > WHEN THE SPEECH SWITCH IS PRESSED, THE VOICE INFORMATION IS OUTPUT, BUT THE VOICE RECOGNITION IS NOT PERFORMED.
Inspection Procedure 3: When the speech switch is pressed, the voice guide is output, but the voice recognition is not performed.
 
 
cautionBefore replacing the hands free-ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.
 
 
COMMENTS ON TROUBLE SYMPTOM
When the speech switch is pushed, if the voice guide is sent but voice recognition is not executed, the microphone unit, hands free-ECU or the communication between the microphone unit and hands free-ECU may have a problem. It may also be possible that the voice recognition is interfered by external noise.
 
 
 
PROBABLE CAUSES
  • Malfunction of the hands free-ECU
  • Malfunction of the microphone unit
  • Damaged harness wires and connectors
 
 
 
 
DIAGNOSIS PROCEDURE
STEP 1. Retest the system.
Close all the windows to suppress external noise as much as possible. Then check whether the voice recognition operates normally when you utter a word as close to the microphone unit as possible.
Is the check result normal?
Diagnosis complete.
Go to Step 2.
 
STEP 2. Check the diagnosis mode
Check if the microphone check result "HFM MIC Check" is displayed on the diagnosis mode of hands free-ECU. (Refer to <Vehicles with 1CD audio>, <Vehicles with display audio> or <Vehicles with MMCS>.)
Is the check result normal?
Go to Step 4.
Go to Step 3.
 
STEP 3. Check of short to power supply, short to earth, and open circuit in MIC+ and MIC- line between hands free-ECU connector and microphone unit connector.
Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).
Repair the connector(s) or wiring harness.
 
STEP 4. Replace the microphone unit temporarily, and check the trouble symptom.
Is the check result normal?
Replace the microphone unit.
Go to Step 5.
 
STEP 5. Replace the hands free-ECU temporarily, and check the trouble symptom.
Is the check result normal?
Replace the hands free-ECU.
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).