Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Inspection Procedure
- IDENTIFY THE COMPONENT SHOWN BY SUB-CODE
- Enter the diagnostic mode.
- Press the preset switch "3" to change to "Detailed Information Mode".
- Identify the component shown by the sub-code.
HINT:
- "190 (radio receiver)" is the component shown by the subcode in the example shown in Fig 1.
- For details of the DTC display, refer to "DTC CHECK/ CLEAR " .
- CHECK COMPONENT SHOWN BY SUB-CODE
- 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 SHOWN BY SUB-CODEComponent Proceed to Radio Receiver (190) A Except Radio Receiver B A: REPLACE RADIO RECEIVER
B: Go To Next Step
- Select the component shown by sub-code.
- CHECK POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODE
- 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:
POWER SOURCE CIRCUIT OF COMPONENT SHOWN BY SUB-CODEComponent Proceed to Stereo component amplifier (440) STEREO COMPONENT AMPLIFIER POWER SOURCE CIRCUIT - Inspect the power source circuit of the component shown by the sub-code.
- INSPECT RADIO RECEIVER
- Disconnect the radio receiver connector.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITION CHARTTester connection Condition Specified condition ATX+(F26-5)-ATX-(F26-15) Always 60 to 80 Ω NG: REPLACE RADIO RECEIVER
OK: Go To Next Step
- 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 the "TERMINALS OF ECU " .
- 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.
- Disconnect all connectors between the "Bluetooth" handsfree module and the component shown by the sub-code.
- 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 is no open or short circuit.
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go To Next Step
- REPLACE COMPONENT SHOWN BY SUB-CODE
- 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
- Replace the component shown by the sub-code with a normal one and check if the same problem occurs again.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.