Keyless Entry System Inoperative
Keyless Entry System Inoperative
Diagnostic Fault Information
Perform the Diagnostic System check - Vehicle prior to using this diagnostic procedure.
Circuit/System Description
When a keyless entry transmitter button is pressed, an RF signal is sent to the vehicle. The remote control door lock receiver (RCDLR) receives this RF signal by way of the keyless entry/tire pressure antenna. When the RF signal is received, the RCDLR determines the specific command sent by the transmitter and will relay this message to the body control module (BCM) via serial data. The BCM will then perform the command.
Reference Information
Schematic Reference Diagrams
Connector End View Reference
Table 1: Hood Ajar Switch (AP3/AP8)
Table 2: Remote Control Door Lock Receiver (RCDLR)
Connector Part Information
OEM: 15326808
Service: See Catalog
Description: 3-Way F GT 150 Series Sealed 4.5 (BK)
Terminal Part Information
Terminal/Tray: 12191819/8
Core/Insulation Crimp: E/A
Release Tool/Test Probe: 15315247/J-35616-2A (GY)
Hood Ajar Switch (AP3/AP8)
Remote Control Door Lock Receiver (RCDLR)
Electrical Information Reference
Circuit Testing Circuit Testing
Connector Repairs Connector Repairs
Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
Wiring Repairs Wiring Repairs
Scan Tool Reference
Scan Tool Data List Scan Tool Data List
Scan Tool Data Definitions Scan Tool Data Definitions
Special Tools required
J43241 Keyless Entry Tester Tools and Equipment
Circuit /System Testing
1. Verify that the transmitter being used is a correct transmitter for the vehicle.
- If not the correct transmitter, replace the transmitter.
2. Place the transmitter on the test pad of the J 43241 and press each button of the transmitter one at a time. The tester should sound a tone and illuminate a green light when each button is pressed.
- If any of the buttons do not sound the tone and illuminate the green light, replace the transmitter battery. Retest with the J 43241. If the transmitter continues to malfunction, replace the affected transmitter.
3. Verify the scan tool Fob Programmed parameter for the transmitter being used is Yes.
- If not the specified value, program the applicable transmitter.
4. Press each transmitter button. Verify the scan tool Fob Function parameter for the transmitter being used responds to each button press.
- If the parameter does not respond, test the keyless entry antenna for an open/high resistance. If all circuits test normal, replace the RCDLR.
5. If all circuits test normal, test or replace the RCDLR.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Note: After a repair has been made, some DTCs require the ignition to be turned OFF then back ON before the scan tool function will clear the DTC.
1. Ignition OFF.
2. Install any components or connectors that have been removed or replaced during diagnosis.
3. Perform any adjustment, programming or setup procedures that are required when a component or module is removed or replaced.
4. Ignition ON.
5. Clear the DTCs.
6. Turn the ignition OFF for 60 seconds.
7. If the repair was related to a DTC, duplicate the Conditions for Running the DTC and use the Freeze Frame/Failure Records, if applicable, in order to verify the DTC does not set. If the DTC sets or another DTC is present, refer to the Diagnostic Trouble Code (DTC) List - Vehicle A L L Diagnostic Trouble Codes ( DTC ) and perform the appropriate diagnostic procedure. Or If the repair was symptom related, duplicate the conditions under which the customer concern occurred to verify the repair. If the customer concern reoccurs or another symptom is present, return to Symptoms - Vehicle and perform the appropriate symptom diagnostic. Symptom Related Diagnostic Procedures
Transmitter Battery Replacement Keyless Entry Transmitter Battery
Remote Control Door Lock Transmitter Programming
Important: Keyless entry transmitters may also be programmed using the driver information center (DIC). Refer to the vehicle owners manual for information.
Important: All transmitters which are to be recognized by the remote control door lock receiver (RCDLR) must be programmed in a single programming sequence. Once the Invalidate All Fobs selection is made, all learned transmitters are erased. Up to 8 transmitters can be programmed. Do not operate or program the transmitters in the vicinity of other vehicles that are in the keyless entry program mode. This prevents the programming of the transmitters to the incorrect vehicle.
1. With a scan tool, access the Remote Control Door Lock Receiver Module Setup menu. Select Program Key Fobs.
2. Select Invalidate All Fobs. This will erase all learned keyless entry transmitters and prepare the RCDLR to learn transmitters.
3. Select Next Available Slot. Follow the on-screen instructions. Simultaneously hold the LOCK and UNLOCK buttons on the keyless entry transmitter to program.
4. When all the desired transmitters have been programmed, exit the vehicle and operate the transmitter functions in order to verify correct system operation.
Control Module references for RCDLR replacement, setup and programming. Programming and Relearning