Inspection and verification
1. Check the validity of the customer's complaint by activating the system using the customer's mobile phone.
2. Perform a visual inspection for obvious signs of mechanical or electrical damage.
Visual inspection table
|
Mechanical factors |
Electrical factors |
|
- Damaged cell phone - Damaged microphone - Damaged cell phone handset bracket - Damaged audio unit - Damaged antenna |
– Fuse(s) – Loose or corroded electrical connector(s) - Wiring harness – Central Junction Box (CJB), fuse F31 (15 A) – CJB, fuse F50 (7.5 A) |
3. If an obvious cause for a reported or received complaint is found, correct the problem (if possible) before proceeding to the next step.
4. If the cause of the problem is not visually obvious, check the malfunction symptom and refer to the Malfunction Symptom Table.
Table of signs of malfunction
|
State |
Possible Causes |
Action |
|
•The audio unit display does not show PHONE |
•Fuse(s). •Chain. |
•GO to Pinpoint Test A. |
|
•Audio block. |
•REFER to section 415 - 00. |
|
|
•No battery charge on cell phone |
•Fuse(s). •Chain. •Module for supporting operation in portable mode of a mobile phone. |
•GO to Pinpoint Test B. |
|
•Cell phone battery. |
•REFER to your cell phone's operating instructions. |
|
|
•Poor reception quality, interference during negotiations, frequent interruptions in negotiations |
•Cell phone. •Antenna supporting operation in portable mode of a cellular phone. •Cell phone handset bracket. |
•GO to Pinpoint Test C. |
|
•The microphone of the telephone system does not work properly in speakerphone mode |
•Speakerphone mode microphone. •Module for supporting operation in portable mode of a mobile phone. •Audio block. |
•GO to Pinpoint Test D. |
|
• Low or no sound from speakers |
• Cell phone. • Module for supporting operation in portable mode of a cellular phone. • Bracket for cell phone handset. |
•GO to Pinpoint Test E. |
|
•Audio block. |
•REFER to section 415-00. |
|
|
•Cell phone messages are not displayed on the audio unit display |
•Cell phone. •Module for supporting operation in portable mode of a mobile phone. |
•GO to Pinpoint Test F. |
|
•Audio block. |
•REFER to section 415-00. |