Diagnostic Procedure

VEHICLE HAS POOR WAVE SIGNAL RECEPTION SENSITIVITY DIAGNOSTIC PROCEDURE

Step	Inspection	Results	Action
1	VERIFY ALL SYSTEM DTCs Perform the DTC inspection. (See DTC INSPECTION .) Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
1		No	Go to the next step.
2	INSPECT TELEMATICS COMMUNICATION UNIT, TEL ANTENNA NO. 1, AND TEL ANTENNA NO. 2 CONNECTORS FOR MALFUNCTION Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION .) Are the connector and terminal normal?	Yes	Go to the next step.
2		No	Repair or replace the malfunctioning location and perform the repair completion verification.
3	INSPECT TEL ANTENNA NO. 1 SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY, SHORT TO GROUND, AND OPEN CIRCUIT Inspect the signal circuit for a short to power supply, short to ground, and an open circuit. (See CIRCUIT INSPECTION .) Are the connector and terminal normal?	Yes	Go to the next step.
3		No	Repair or replace the malfunctioning location and perform the repair completion verification.
4	INSPECT TEL ANTENNA NO. 2 SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY, SHORT TO GROUND, AND OPEN CIRCUIT Inspect the signal circuit for a short to power supply, short to ground, and an open circuit. (See CIRCUIT INSPECTION .) Are the connector and terminal normal?	Yes	Go to the next step.
4		No	Repair or replace the malfunctioning location and perform the repair completion verification.
Repair completion verificationl	VERIFY THAT VEHICLE IS REPAIRED Install/connect the part removed/disconnected during the troubleshooting procedure. Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting. (Explain contents of repair to customer)
Repair completion verificationl		No	Disconnect the TEL antenna No. 1 connector and verify the [radio reception status display for the telematics communication unit]. If the [radio reception status display for the telematics communication unit] indicates out of range: Replace the TEL antenna No. 2, then go to the next step. (See TEL ANTENNA REMOVAL/INSTALLATION (US) .) If the [radio reception status display for the telematics communication unit] does not indicate out of range: Go to the next step.
Repair completion verification 2	VERIFY THAT VEHICLE IS REPAIRED Install/connect the part removed/disconnected during the troubleshooting procedure. Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting. (Explain contents of repair to customer)
Repair completion verification 2		No	Replace the TEL antenna No. 1, then go to the next step. (See TEL ANTENNA REMOVAL/INSTALLATION (US) .)
Repair completion verifications	VERIFY THAT VEHICLE IS REPAIRED Install/connect the part removed/disconnected during the troubleshooting procedure. Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting. (Explain contents of repair to customer)
Repair completion verifications		No	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW (US) .) If the CAN communication is normal, perform the diagnosis from Step 1. If the malfunction is not resolved, replace the telematics communication unit. (See TELEMATICS COMMUNICATION UNIT REMOVAL/INSTALLATION .)