Driver Front Door Failing To Unlock From Any Switch
- Turn ignition off. Remove driver's door unlock relay from junction block. Measure voltage at terminal No. 87 at driver's door unlock relay socket on junction block. See Figure . If battery voltage exists, go to next step. If battery voltage does not exist, replace junction block.
- Measure voltage at terminal No. 88 at driver's door unlock relay socket on junction block. If battery voltage exists, go to next step. If battery voltage does not exist, replace junction block.
- Disconnect Body Control Module (BCM) from back of junction block. Measure resistance between terminal No. 90 at driver's door unlock relay socket on junction block and terminal No. 13 at BCM connector on back of junction block. See Figure and Figure . If resistance is 5 ohms or less, go to next step. If resistance is greater than 5 ohms, replace junction block.
- Connect BCM to junction block. Connect scan tool to Data Link Connector (DLC). Connect a test light between terminals No. 88 and 90 at driver's door unlock relay socket on junction block. Turn ignition on. Using scan tool, activate driver's door unlock relay. If test light illuminates, replace driver's door unlock relay. If test light does not illuminate, replace BCM.