Pinpoint Test Q: The SYNC(R) System Audible Prompts Or Voice Guidance Features Are Inoperative Or Do Not Operate Correctly

Information and Entertainment System

Pinpoint Test Q: The SYNC(R) System Audible Prompts Or Voice Guidance Features Are Inoperative Or Do Not Operate Correctly

Normal Operation

The Text-To-Speech (TTS) and voice prompt features speak certain text information and interaction requests to minimize driver distraction by having to look at the audio system display while driving. The ringtone alerts the driver to an incoming call.

Audible prompts can range from a simple tone to more elaborate spoken text, based on the customer setting. When interaction mode is set to standard, detailed guidance is provided. When interaction mode is set to advanced, most prompts are tones only and minimal audible guidance is provided. Refer to the Owner's Literature for further information on voice interaction.

For the Premium audio system, the audio signals for the TTS (Text-To-Speech) and voice prompt features, the ringtones, and audio from the outside device during a phone call, are sent from the Accessory Protocol Interface Module (APIM) to the Audio Front Control Module (ACM).

For Sony(R) audio and THX(R) audio systems, the audio signals for the TTS (Text-To-Speech) and voice prompt features, the ringtones, and audio from the outside device during a phone call, are sent from the APIM (Accessory Protocol Interface Module) to the audio Digital Signal Processing (DSP) module.

This pinpoint test is intended to diagnose the following:

- Customer setting

- Wiring, terminals or connectors

- APIM (Accessory Protocol Interface Module)

- ACM (Audio Front Control Module) (Premium audio)

- Audio DSP (Digital Signal Processing) module (Sony(R) or THX(R) audio)

PINPOINT TEST Q : THE SYNC(R) SYSTEM AUDIBLE PROMPTS OR VOICE GUIDANCE FEATURES ARE INOPERATIVE OR DO NOT OPERATE CORRECTLY

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

Q1 CHECK THE AUDIBLE PROMPT SETTING

- Operate the audio system in SYNC(R) mode.

- Verify the audible prompts are enabled. Refer to "SYNC(R) Voice Recognition Feature" in the Owner's Literature.

- Press the VOICE switch on the steering wheel controls and observe the SYNC(R) audible prompt.

Does the SYNC(R) system produce an audible prompt correctly?

Yes
The system is operating correctly at this time. The concern was caused by a customer setting. INSTRUCT the customer in the correct operation of the audible prompt feature.

No
GO to Q2.

Q2 CHECK FOR A VOLTAGE SIGNAL FROM THE APIM (Accessory Protocol Interface Module)

- Operate the audio system in SYNC(R) mode, and verify the audible prompts are enabled. Refer to "SYNC(R) Voice Recognition Feature" in the Owner's Literature.

- While pressing the VOICE switch repeatedly, measure the AC voltage by back-probing between:

System Module Positive Lead Negative Lead Premium ACM (Audio Front Control Module) C240B-8 C240B-21 Sony(R)Audio DSP (Digital Signal Processing) Module C4326A-5 C4326A-15 THX(R)Audio DSP (Digital Signal Processing) Module C4348A-10 C4348A-20

Is an AC voltage produced each time the VOICE switch is pressed?

Yes
For vehicles equipped with premium audio, GO to Q8.

For vehicles equipped with Sony(R) or THX(R) audio, GO to Q9.

No
GO to Q3.

Q3 CHECK THE AUDIBLE PROMPT CIRCUITS FOR A SHORT TO VOLTAGE

- Ignition OFF.

- Disconnect: ACM (Audio Front Control Module) C240B (Premium).

- Disconnect: Audio DSP (Digital Signal Processing) Module C4326A (Sony(R)) or C4348A (THX(R)).

- Disconnect: APIM (Accessory Protocol Interface Module) C2383.

- Ignition ON.

- Measure the voltage between the APIM (Accessory Protocol Interface Module) C2383-3, circuit VME80 (VT/GN), harness side and the APIM (Accessory Protocol Interface Module) C2383-4, circuit RME80 (BU/GY), harness side and ground.

Is any voltage present?

Yes
REPAIR the circuit in question. TEST the system for normal operation.

No
For vehicles equipped with premium audio, GO to Q4.

For vehicles equipped with Sony(R) audio, GO to Q5.

For vehicles equipped with THX(R) audio, GO to Q6.

Q4 CHECK THE PREMIUM AUDIO AUDIBLE PROMPT CIRCUITS FOR AN OPEN OR SHORT TO GROUND

- Ignition OFF.

- Measure the resistance between the APIM (Accessory Protocol Interface Module) C2383-3, circuit VME80 (VT/GN), harness side and the ACM (Audio Front Control Module) C240B-8, circuit VME80 (VT/GN), harness side; and between the APIM (Accessory Protocol Interface Module) C2383-3, circuit VME80 (VT/GN), harness side and ground.

- Measure the resistance between the APIM (Accessory Protocol Interface Module) C2383-4, circuit RME80 (BU/GY), harness side and the ACM (Audio Front Control Module) C240B-21, circuit RME80 (BU/GY), harness side; and between the APIM (Accessory Protocol Interface Module) C2383-4, circuit RME80 (BU/GY), harness side and ground.

Is the resistance less than 5 ohms between the APIM (Accessory Protocol Interface Module) and the ACM (Audio Front Control Module), and greater than 10,000 ohms between the APIM (Accessory Protocol Interface Module) and ground?

Yes
CONNECT the ACM (Audio Front Control Module). GO to Q7.

No
REPAIR the circuit in question. TEST the system for normal operation.

Q5 CHECK THE SONY(R) AUDIO AUDIBLE PROMPT CIRCUITS FOR AN OPEN OR SHORT TO GROUND

- Ignition OFF.

- Measure the resistance between the APIM (Accessory Protocol Interface Module) C2383-3, circuit VME80 (VT/GN), harness side and the audio DSP (Digital Signal Processing) module C4326A-5, circuit VME80 (VT/GN), harness side; and between the APIM (Accessory Protocol Interface Module) C2383-3, circuit VME80 (VT/GN), harness side and ground.

- Measure the resistance between the APIM (Accessory Protocol Interface Module) C2383-4, circuit RME80 (BU/GY), harness side and the audio DSP (Digital Signal Processing) module C4326A-15, circuit RME80 (BU/GY), harness side; and between the APIM (Accessory Protocol Interface Module) C2383-4, circuit RME80 (BU/GY), harness side and ground.

- Measure the resistance between the APIM (Accessory Protocol Interface Module) C2383-4, circuit RME80 (BU/GY), harness side and the audio DSP (Digital Signal Processing) module C4348A-20, circuit RME80 (BU/GY), harness side; and between the APIM (Accessory Protocol Interface Module) C2383-4, circuit RME80 (BU/GY), harness side and ground.

Is the resistance less than 5 ohms between the APIM (Accessory Protocol Interface Module) and the audio DSP (Digital Signal Processing) module, and greater than 10,000 ohms between the APIM (Accessory Protocol Interface Module) and ground?

Yes
CONNECT the audio DSP (Digital Signal Processing) module. GO to Q7.

No
REPAIR the circuit in question. TEST the system for normal operation.

Q7 CHECK FOR CORRECT APIM (Accessory Protocol Interface Module) OPERATION

- Disconnect the APIM (Accessory Protocol Interface Module) connector.

- Check for:
- corrosion

- damaged pins

- pushed-out pins

- Connect the APIM (Accessory Protocol Interface Module) connector and make sure it seats correctly.

- Wait 2 minutes for the APIM (Accessory Protocol Interface Module) to re-initialize.

Is the concern still present?

Yes
INSTALL a new APIM (Accessory Protocol Interface Module). REFER to Accessory Protocol Interface Module (APIM) Accessory Protocol Interface Module (APIM). TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Q8 CHECK FOR CORRECT ACM (Audio Front Control Module) OPERATION

- Ignition OFF.

- Disconnect all the ACM (Audio Front Control Module) connectors.

- Check for:
- corrosion

- damaged pins

- pushed-out pins

- Connect all the ACM (Audio Front Control Module) connectors and make sure they seat correctly.

- Operate the system and verify the concern is still present.

Is the concern still present?

Yes
INSTALL a new ACM (Audio Front Control Module). REFER to Audio Control Module (ACM) Audio Control Module (ACM). TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.

Q9 CHECK FOR CORRECT AUDIO DSP (Digital Signal Processing) MODULE OPERATION

- Ignition OFF.

- Disconnect all the audio DSP (Digital Signal Processing) module connectors.

- Check for:
- corrosion

- damaged pins

- pushed-out pins

- Connect all the audio DSP (Digital Signal Processing) module connectors and make sure they seat correctly.

- Operate the system and verify the concern is still present.

Is the concern still present?

Yes
INSTALL a new audio DSP (Digital Signal Processing) module. REFER to Audio Digital Signal Processing (DSP) Module Audio Digital Signal Processing (DSP) Module. TEST the system for normal operation.

No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.