Keyless Entry System Inoperative (Passive)

WARNING: This page is about a different car, the 2006 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.

Step	Action	Yes	No
Schematic Reference: Keyless Entry Schematics Connector End View Reference: Keyless Entry Connector End Views
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2	Approach the vehicle with the keyless entry transmitter and attempt to open each door and the rear compartment. Do all doors and the rear compartment open?	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems	Go to Step 3
3	Do any doors or the rear compartment open?	Go to Step 4	Go to Step 5
4	IMPORTANT: The voltage signal sent by the remote control door lock receiver (RCDLR) to the passive antenna is an AC voltage signal. The DMM must be set on AC voltage setting to record the voltage pulse to the passive antenna. Use a DMM to record the voltage pulse using the MIN MAX setting to capture the AC voltage pulse to the passive antenna. Disconnect the keyless entry antenna at the inoperative door or rear compartment. With the DMM measure/capture for an AC voltage signal between the keyless entry antenna power circuit and the ground circuit. With a scan tool, go to the RCDLR special functions menu. Select and authenticate the affected antenna. Was an AC voltage signal captured on the DMM?	Go to Step 7	Go to Step 6
5	Test the passive portion of the transmitter: Turn on the J 43241 Keyless Entry Tester. See Special Tools . Place the transmitter on the J 43241 test pad. See Special Tools . With the J 43241 in hand, approach the vehicle and attempt to open each door and the rear compartment. See Special Tools . Does the J 43241 beep during each entry attempt? See Special Tools .	Go to Step 8	Go to Step 9
6	Test the affected antenna's keyless entry antenna signal and low reference circuit for an open or a short to ground. Refer to Circuit Testing andWiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 8
7	Inspect for poor connections at the affected keyless entry antenna. Refer to Testing for Intermittent Conditions and Poor Connections andConnector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 12
8	Inspect for poor connections at the RCDLR. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 14	Go to Step 13
9	Replace the transmitter battery. Refer to Transmitter Battery Replacement . Did you find and correct the condition?	Go to Step 14	Go to Step 10
10	Replace the keyless entry transmitter. Refer to Transmitter Programming (Domestic) or Transmitter Programming (Export - Including Canada) . Did you complete the replacement?	Go to Step 11	-
11	IMPORTANT: All transmitters which are to be recognized by the RCDLR must be programmed in a single programming sequence. Perform the transmitter programming procedure. Refer to Transmitter Programming (Domestic) or Transmitter Programming (Export - Including Canada) .Did the driver information center (DIC) beep and display a message ready for next fob?	Go to Step 14	Go to Step 13
12	Replace the affected keyless entry antenna. Refer to Remote Control Door Lock and Theft Deterrent Receiver Replacement . Did you complete the replacement?	Go to Step 14	-
13	Replace the RCDLR. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement?	Go to Step 14	-
14	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 3