Bluetooth Handsfree Module Communication Error

AUDIO / VIDEO: AUDIO AND VISUAL SYSTEM: Bluetooth Handsfree Module Communication Error
- Bluetooth Handsfree Module Communication Error

INSPECTION PROCEDURE

PROCEDURE

1. IDENTIFY COMPONENT SHOWN BY SUB-CODE

(a) Enter the diagnostic mode.





(b) Press preset switch "2" to change to "Detailed Information Mode".

(c) Identify the component shown by the sub-code.

HINT
* "P190" set by the radio receiver is shown in the preceding illustration as an example.
* For details of the DTC display, refer to DTC Check/Clear Reading and Clearing Diagnostic Trouble Codes.

NEXT -- Continue to next step.

2. CHECK COMPONENT SHOWN BY SUB-CODE

(a) Select the component shown by sub-code.

HINT
The "Bluetooth" handsfree module is built into the radio receiver. If there is a problem between the "Bluetooth" handsfree module and radio receiver, replace the radio receiver.

Component Table

Component Table:

B -- REPLACE RADIO RECEIVER Removal
A -- Continue to next step.

3. CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE

(a) Inspect the power source circuit of the component shown by the sub-code.

If the power source circuit is operating normally, proceed to the next step.

Component Table

Component Table:

NEXT -- Continue to next step.

4. INSPECT RADIO RECEIVER

(a) Disconnect the radio receiver connectors.





(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





Text in Illustration

Text in Illustration:

NG -- REPLACE RADIO RECEIVER Removal
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR ("BLUETOOTH" HANDSFREE MODULE - COMPONENT SHOWN BY SUB-CODE)

HINT
* Start the check from the circuit that is near the component shown by the sub-code first.
* For details of the connectors, refer to Terminal of ECU Pinout Values and Diagnostic Parameters.

(a) Referring to the following AVC-LAN wiring diagram, check the AVC-LAN circuit between the "Bluetooth" handsfree module and component shown by the sub-code.

(1) Disconnect all connectors between the "Bluetooth" handsfree module and component shown by the sub-code.

(2) Check for an open or short in the AVC-LAN circuit between the "Bluetooth" handsfree module and component shown by the sub-code.

OK:

There is no open or short circuit.





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

6. REPLACE COMPONENT SHOWN BY SUB-CODE

(a) Replace the component shown by the sub-code with a known good one and check if the same problem occurs again.

OK:

Malfunction disappears.

NG -- REPLACE RADIO RECEIVER (BUILT-IN "BLUETOOTH" HANDSFREE MODULE) Removal

OK -- END