Bluetooth Handsfree Module Communication Error

NAVIGATION: NAVIGATION SYSTEM: Bluetooth Handsfree Module Communication Error

Bluetooth Handsfree Module Communication Error

INSPECTION PROCEDURE

PROCEDURE

1. IDENTIFY THE COMPONENT SHOWN BY SUB-CODE





(a) Enter the diagnostic mode.
(b) Press the "LAN Mon" switch to change the mode to "LAN Monitor" mode.
(c) Identify the component shown by the sub-code.

HINT:
- For example, "110 (multi-display)" is the component shown by the sub-cod as shown in the illustration.
- The sub-code will be indicated by its physical address.

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:





B -- REPLACE RADIO RECEIVER
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:





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:






NG -- REPLACE RADIO RECEIVER
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 nearest the component shown by the sub-code first.
- For details of the connectors, refer to "TERMINALS OF ECU" Pinout Values and Diagnostic Parameters.
(a) Referring to the AVC-LAN wiring diagram below, check the AVC-LAN circuit between the "Bluetooth" handsfree module and the component shown by the sub-code.
(1) Disconnect all connectors between the "Bluetooth" handsfree module and the component shown by the sub-code.
(2) Check for an open or short in the AVC-LAN circuit between the "Bluetooth" handsfree module and the component shown by the sub-code.
OK:
There are no open or short circuits.






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 normal one and check if the same problem occurs again.
OK:
Same problem does not occur.

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