Inspection and verification
1. Check the legitimacy of the customer's complaint by activating the system using the customer's cell phone.
2. Perform a visual check 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 (And) – Loose or corroded electrical connector (s) – wiring harness – Central connection box (CJB), fuse F31 (15 A) – CJB, fuse F50 (7.5 A) |
3. If there is an obvious cause for a noted or received complaint, troubleshoot (if it is possible) before moving on to the next step.
4. If the cause of the problem is not visually obvious, check the symptom and refer to the Symptom Chart.
Symptom table
|
State |
Possible Causes |
Action |
|
• PHONE is not displayed on the audio unit display |
•Fuse (And). •Chain. |
•GO to Pinpoint Test A. |
|
•Audio block. |
• REFER to section 415 - 00. |
|
|
•Cell phone battery not charging |
•Fuse (And). •Chain. • Module to support work in a portable cell phone mode. |
•GO to Pinpoint Test B. |
|
• Cell phone battery. |
• REFER to the operating instructions for your cell phone. |
|
|
• Poor reception quality, interference during negotiations, frequent breaks in negotiations |
•Cellular telephone. •Antenna support work in a portable mode of a cell phone. •Cell phone handset bracket. |
•GO to Pinpoint Test C. |
|
• Phone system microphone is not working properly in hands-free mode |
• Hands-free microphone. • Module to support work in a portable cell phone mode. •Audio block. |
•GO to Pinpoint Test D. |
|
• Quiet sound or no sound from the speakers |
• Cellular telephone. • Cell phone handheld support module. • 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 |
•Cellular telephone. • Module to support work in a portable cell phone mode. |
•GO to Pinpoint Test F. |
|
•Audio block. |
• REFER to section 415-00. |
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