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Possible Causes

High power devices
Aftermarket systems
TV/radio transmission towers
RKE transmitter
SJB

NOTE:

All RKE transmitters must be present to begin diagnosis of the RKE system.

NOTE:

Aftermarket or dealer-installed systems may adversely affect the RKE system operation. These systems should be disconnected before diagnosing any RKE concerns.

REMOTE KEYLESS ENTRY (RKE) TRANSMITTER HAS POOR RANGE PERFORMANCE - PINPOINT TEST REFERENCE

PINPOINT TEST 7		THE REMOTE KEYLESS ENTRY (RKE) TRANSMITTER HAS POOR RANGE PERFORMANCE
STEP	INSPECTION		ACTION
1	CHECK FOR THE CORRECT RKE TRANSMITTERS Check that the correct RKE transmitters are used with the vehicle. Make sure the RKE transmitters are the originals provided with the original equipment manufacturer (OEM) system and not from an aftermarket system, or a dealer-installed system, that may have been installed on the vehicle. Are all the correct RKE transmitters present?	Yes	Go to next step.
1		No	The system cannot be tested without the correct RKE transmitters. Inform the customer that all the correct RKE transmitters need to be present to proceed with diagnosis of the system.
2	CHECK ALL THE RKE TRANSMITTERS FOR POOR RANGE PERFORMANCE NOTE: The 3 m (10 ft) measurement of range is not the standard but is a guideline that clearly indicates a vehicle is experiencing poor range performance. Check all RKE transmitters for poor range performance (less than 3 m or 10 ft). Do all RKE transmitters experience poor range?	Yes	Go to next step.
2		No	Replace the inoperative RKE transmitter and program all the RKE transmitters. see REMOTE KEYLESS ENTRY (RKE) TRANSMITTER PROGRAMMING . Inform the customer that any RKE transmitters not present need to be programmed. Clear the DTCs. TEST the system for normal operation.
3	CHECK THE LOCATION OF THE VEHICLE AND THE APPROACH ANGLES AROUND THE VEHICLE Make sure the poor performance is consistent in nature and is not from one approaching angle. The RKE transmitter range performance may be degraded in certain locations. For example, if the vehicle is within 0.5 miles (0.8 km) of high-power devices or radio/TV towers, the operating distance of the transmitters may be reduced. Is the poor range performance consistent around the vehicle?	Yes	Go to next step.
3		No	The system is operating correctly at this time. Clear the DTCs. Test the system for normal operation.
4	CHECK FOR CORRECT SJB OPERATION Disconnect all the SJB connectors. Check for: corrosion damaged pins pushed-out pins Connect all the SJB connectors and make sure they seat correctly. Operate the system and verify the concern is still present. Is the concern still present?	Yes	Install a new SJB. See SMART JUNCTION BOX (SJB) , . Program all RKE transmitters. see REMOTE KEYLESS ENTRY (RKE) TRANSMITTER PROGRAMMING . Inform the customer that any RKE transmitters not present need to be programmed, clear the DTCs. Repeat the self-test.
4		No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.