Diagnostic Procedure

Step	Inspection		Action
1	INSPECT COIL ANTENNA CONNECTOR CONDITION Switch the ignition to off. Disconnect the negative battery cable. Disconnect the coil antenna connector. Inspect the connector and terminals (corrosion, damage, pin disconnection). Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to the next step.
1		No	Go to the next step.
2	INSPECT KEYLESS CONTROL MODULE CONNECTOR CONDITION Disconnect the keyless control module connector. Inspect the connector and terminals (corrosion, damage, pin disconnection). Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to the next step.
2		No	Go to the next step.
3	INSPECT PUSH BUTTON START CONNECTOR CONDITION Disconnect the push button start connector. Inspect the connector and terminals (corrosion, damage, pin disconnection). Is there any malfunction?	Yes	Repair or replace the connector or terminals, then go to the next step.
3		No	Go to the next step.
4	INSPECT COIL ANTENNA POWER SUPPLY CIRCUIT FOR SHORT TO POWER SUPPLY Reconnect the negative battery cable. Measure the voltage between keyless control module terminal 4Q (wiring harness-side) and body ground. Is the voltage more than 2.2 V ?	Yes	Repair or replace the wiring harness for a possible short to power supply, then go to the next step.
4		No	Go to the next step.
5	INSPECT PUSH BUTTON START Reconnect the push button start connector. Measure the voltage between keyless control module terminal 4Q (wiring harness-side) and body ground. Is the voltage more than 2.2 V ?	Yes	Replace the push button start, then go to the next step. (See PUSH BUTTON START REMOVAL/INSTALLATION [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .)
5		No	Go to the next step.
6	INSPECT COIL ANTENNA Reconnect the coil antenna connector. Measure the voltage between keyless control module terminal 4Q (wiring harness-side) and body ground. Is the voltage more than 2.2 V ?	Yes	Replace the coil antenna, then go to the next step. (See COIL ANTENNA REMOVAL/INSTALLATION [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .)
6		No	Go to the next step.
7	PERFORM DTC INSPECTION Reconnect the keyless control module connector. Clear the DTC from the keyless control module and PCM memory using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM)] .) Disconnect the negative battery cable. Reconnect the negative battery cable. NOTE: The keyless control module performs on-board self-diagnostics while the negative battery cable is connected. Perform the immobilizer system (advanced keyless entry and push button start system) DTC inspection using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM)] .) Is the same DTC present?	Yes	Replace the keyless control module and program the immobilizer system-related parts, then go to the next step. (See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .) (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM] .)
7		No	Go to the next step.
8	VERIFY THAT NO OTHER DTCs ARE PRESENT Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [IMMOBILIZER SYSTEM (ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM)] .)
8		No	DTC troubleshooting completed.