Pinpoint Test R: Voice Recognition Is Inoperative/Does Not Operate Correctly
Information and Entertainment System
Pinpoint Tests
Pinpoint Test R: Voice Recognition Is Inoperative/Does Not Operate Correctly
Refer to Wiring Diagrams Set 130, Audio System for schematic and connector information. Diagrams By Number
Normal Operation
The voice recognition system is operational with the ignition in RUN and the audio system on. The voice recognition system does not function with the ignition in ACC because the interior rear view mirror only receives voltage in RUN.
The Accessory Protocol Interface Module (APIM) sends a reference voltage to the steering wheel controls through circuit VME45 (BU/OG). When the VOICE button is pressed, the APIM recognizes the change in reference voltage and the audio system enters voice recognition mode. A microphone located in the interior rear view mirror receives the voice command and sends a signal to the APIM through circuits VMN13 (YE/GN) and RME13 (BU). The microphone is also used to detect outgoing audio during a phone call.
The voice recognition only functions with the SYNC system; it does not have direct functionality with the Audio Control Module (ACM). As a result, the voice recognition does not control the radio tuner, CD player, or satellite audio system.
- DTC B1038 (Microphone Input Circuit Failure) - sets during the on-demand self-test if the APIM (V1) does not detect the microphone.
- DTC B1D79:01 (Microphone Input: General Electrical Failure) - sets during the on-demand self-test if the APIM (V2) does not detect the microphone.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Steering wheel controls
- Microphone (part of the interior rear view mirror)
- APIM
PINPOINT TEST R: VOICE RECOGNITION IS INOPERATIVE/DOES 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.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
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R1 CHECK THE OPERATION OF THE STEERING WHEEL CONTROLS
- Operate the audio system in radio tuner (AM/FM) mode.
- Press the VOICE button on the steering wheel controls.
- Does the audio system enter voice recognition mode?
Yes
GO to R2.
No
Go To Pinpoint Test L to diagnose the inoperative steering wheel controls. Pinpoint Test L: The Steering Wheel Controls Are Inoperative/Do Not Operate Correctly
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R2 CHECK THE OPERATION OF THE VOICE RECOGNITION
- Press the VOICE button on the steering wheel controls.
- Wait for the SYNC system to acknowledge the VOICE button being pressed.
- While still in voice recognition mode, speak the command "PHONE", and observe the audio system.
- Does the SYNC system acknowledge the command "PHONE"?
Yes
The system is operating correctly at this time. ADVISE the customer on the correct operation of the voice recognition system.
No
GO to R3.
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R3 CHECK CIRCUIT CPL60 (BN/YE) FOR VOLTAGE
- Ignition OFF.
- Disconnect: Interior Rear View Mirror C911.
- Ignition ON.
- Measure the voltage between the interior rear view mirror C911-1, circuit CPL60 (BN/YE), harness side and ground.
- Is the voltage greater than 10 volts?
Yes
GO to R4.
No
VERIFY the Smart Junction Box (SJB) fuse 41 (15A) is OK. If OK, REPAIR the circuit. TEST the system for normal operation. If not OK, REFER to the Wiring Diagrams to identify the possible causes of the circuit short.
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R4 CHECK CIRCUIT GD161 (BK/YE) FOR AN OPEN
- Ignition OFF.
- Disconnect: Negative Battery Cable.
- Measure the resistance between the interior rear view mirror C911-10, circuit GD161 (BK/YE), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
GO to R5.
No
REPAIR the circuit. TEST the system for normal operation.
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R5 CHECK THE MICROPHONE CIRCUITS FOR A SHORT TO VOLTAGE
- Connect: Negative Battery Cable.
- Disconnect: APIM C2298.
- Ignition ON.
- Measure the voltage between the interior rear view mirror C911-4, circuit VMM13 (YE/GN), harness side and ground; and between the interior rear view mirror C2298-5, circuit RMM13 (BU), harness side and ground.
- Is any voltage present?
Yes
REPAIR the circuit in question. TEST the system for normal operation.
No
GO to R6.
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R6 CHECK THE MICROPHONE CIRCUITS FOR AN OPEN OR SHORT TO GROUND
- Ignition OFF.
- Measure the resistance between the inside rear view mirror, harness side and the APIM, harness side; and between the interior rear view mirror, harness side and ground as follows:
- Is the resistance less than 5 ohms between the interior rear view mirror and the APIM, and greater than 10,000 ohms between the interior rear view mirror and ground?
Yes
GO to R7.
No
REPAIR the circuit in question. TEST the system for normal operation.
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R7 ISOLATE THE INTERIOR REAR VIEW MIRROR
- Connect: APIM C2298.
- Install a new interior rear view mirror.
- Operate the audio system in radio tuner (AM/FM) mode.
- Press the VOICE button on the steering wheel controls, and attempt several voice commands.
- Does the voice recognition operate correctly?
Yes
The fault was caused by an inoperative interior rear view mirror. The system is now operating correctly.
No
GO to R8.
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R8 CHECK FOR CORRECT APIM OPERATION
- 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-initialize.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new APIM. 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.
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