Diagnostic Procedure

OPERATION USING REMOTE TRANSMITTER BUTTON NOT POSSIBLE 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 REMOTE TRANSMITTER FOR MALFUNCTION Inspect the applicable part. (See REMOTE TRANSMITTER BATTERY VOLTAGE INSPECTION .) Is the part normal?	Yes	Go to the next step.
2		No	Repair or replace the malfunctioning location and perform the repair completion verification.
3	DETERMINE IF MALFUNCTION CAUSE IS RADIO WAVE DISTURBANCE Did the malfunction occur under the following conditions? Remote transmitter is carried with communication devices such as mobile phone Remote transmitter contacts or is covered by metal object Remote transmitter is near electronic device such as personal computer Non-genuine electronic device is installed There is equipment which discharges radio waves near vehicle	Yes	The system is normal. (Explain to the customer that the operation cannot be performed due to radio wave disturbance.)
3		No	Go to the next step.
4	INSPECT KEYLESS RECEIVER AND LF CONTROL UNIT CONNECTORS FOR MALFUNCTION Inspect the applicable connector and terminal. (See CONNECTOR 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.
5	INSPECT KEYLESS RECEIVER SIGNAL CIRCUIT FOR SHORT TO GROUND AND OPEN CIRCUIT Inspect the signal circuit for a short to ground and open circuit. (See CIRCUIT INSPECTION .) Is the circuit normal?	Yes	Go to the next step.
5		No	Repair or replace the malfunctioning location and perform the repair completion verification.
6	INSPECT KEYLESS RECEIVER FOR MALFUNCTION Inspect the applicable part. (See KEYLESS RECEIVER INSPECTION .) Is the part normal?	Yes	Go to the next step.
6		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See KEYLESS RECEIVER REMOVAL/INSTALLATION .)
Repair completion verification	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		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 LF control unit. (See LF CONTROL UNIT REMOVAL/INSTALLATION .)