Circuit/System Verification
- Verify no DTCs are present.
- If any DTCs are present
Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Go to next step: If no DTCs are present
- If any DTCs are present
- Verify the K74 Human Machine Interface Control Module calibrations are current.
- If the K74 Human Machine Interface Control Module calibrations are not current
Reprogram the K74 Human Machine Interface Control Module and re-evaluate the concern.
- Go to next step: If no update calibrations are available
- If the K74 Human Machine Interface Control Module calibrations are not current
- Ignition ON, infotainment system ON.
- Verify the infotainment system successfully pairs with the MIT tool.
- If the infotainment system does not successfully pair with the MIT tool.
- Perform the 3 vehicle Factory Resets located in Setting>System>Return to Factory Settings.
- Verify the infotainment system successfully pairs with the MIT tool.
- If the infotainment system does not successfully pair with the MIT tool.
Replace the K74 Human Machine Interface Control Module.
- If the infotainment system does not successfully pair with the MIT tool.
- Go to next step: If the infotainment system successfully pairs with the MIT tool.
- Verify the infotainment system successfully completes the desired feature test using the MIT tool.
- If the feature test is successful but the audio is distorted.
Refer to Speaker Malfunction (UQA) Speaker Malfunction (without UQA)
- If the feature test is not successful
Replace the K74 Human Machine Interface Control Module.
- Go to next step: If the feature test is successful
- If the feature test is successful but the audio is distorted.
- Verify the customers device can be paired with the infotainment system.
- If the device can not be paired with the infotainment system.
Perform a reset on the device. Refer to device manufacture's information.
- Verify the customers device can be paired with the infotainment system.
If the device still will not pair inform the customer the issue is with the device.
- Go to next step: If the device successfully pairs with the infotainment system.
- If the device can not be paired with the infotainment system.
- Verify audio can be heard while streaming from the device.
- If audio can not be heard while streaming.
Ensure the volume on the device is turned up to an adequate level.
- Go to next step: If audio can be heard while streaming.
- If audio can not be heard while streaming.
- All OK.
The MIT tool can be used to test either cellular phone or streaming audio functions. Refer to the tool instructions, and perform the appropriate test (s) related to the customers concern in the following steps.