Pinpoint Test Q: The Sync System Is Completely Inoperative

WARNING: This page is about a different car, the 2008 Mercury Sable, 2008 Ford Taurus X, and 2008 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Q1 CHECK THE AUDIO SYSTEM OPERATION
- Press the AUX button repeatedly until "SYNC LINE IN" appears on the display (except navigation), or look for the presence of the "USER DEVICE" tab (navigation).
- Is "SYNC LINE IN" available when pressing the AUX button (except navigation), or is the "USER DEVICE" tab present (navigation)?
1. YES : Go to Q2.
2. NO : Go to Q3.
Q2 CHECK THE SYNC SYSTEM OPERATION
NOTE: Carrying out a Master Reset will return all preference settings to the factory defaults, erase all the phone book and call histories and delete any devices paired with the SYNC system.
- Connect: Known Good MP3 Device (To Audio Input Jack)
- Using the ACM buttons, press AUX until "SYNC LINE IN" appears on the display (except navigation), or press MEDIA, select "USER DEVICE", and press "SOURCE" repeatedly until "LINE IN" appears (navigation).
- Using the known good MP3 device, attempt to play a file using the audio input jack.
- Disconnect: Known Good MP3 Device (From Audio Input Jack)
- Connect: Known Good USB Device (To USB Port)
- Using the ACM buttons, press AUX until "SYNC USB" appears on the display (except navigation), or press MEDIA, select "USER DEVICE", and press "SOURCE" repeatedly until "USB" appears (navigation).
- Using a known good MP3 device or mass storage device, attempt to play a file using the USB port.
- Disconnect: Known Good USB Device (From USB Port)
- Using a known good Bluetooth® device, attempt to pair to the APIM using Bluetooth®, and attempt to play an audio file using the Bluetooth® connection. Refer to the Owner's Literature.
- Do all of the SYNC inputs function correctly?
1. YES : The SYNC system is operating correctly at this time. CARRY OUT a SYNC system Master Reset.
  For vehicles without navigation, PRESS the "PHONE" button on the steering wheel controls, SCROLL until "SYSTEM SETTINGS" displays on the screen, PRESS "OK", SCROLL until "ADVANCED" displays on the screen, PRESS "OK", SCROLL until "MASTER RESET" displays on the screen, and PRESS "OK" twice.
  
  For vehicles with navigation, PRESS "PHONE" on the ACM display, SELECT the "SETTINGS" tab, PRESS "ADVANCED", SELECT "Master Reset", and PRESS "YES".
  
  REVIEW the pairing process with the customer. If the customer device still does not pair, the fault is with the customer device.
2. NO : If only some of the inputs are inoperative, go to Symptom Chart - SYNC System to diagnose the observed symptom.
  If all inputs are inoperative, go to Pinpoint Test U .
Q3 CHECK FOR SCAN TOOL COMMUNICATION
- Carry out the network test using the scan tool.
- Does the APIM pass the network test?
1. YES : Go to Q4.
2. NO : REFER to MODULE COMMUNICATIONS NETWORK article.
Q4 CHECK FOR CORRECT APIM OPERATION
- Connect: All Disconnected Connectors
- Disconnect the APIM connector.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect the APIM connector and make sure it seats correctly.
- Wait 2 minutes for the APIM to re-initalize.
- Operate the system and verify the concern is still present.
- Is the concern still present?
1. YES : INSTALL a new APIM. REFER to Accessory Protocol Interface Module (APIM) . TEST the system for normal operation.
2. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.