TSB : Normal Operation

Details

When any keypad button is pressed the Smart Junction Box (SJB) sends voltage to the keyless entry keypad LEDs on the illumination circuit to assist the driver in entering an access code at night. The keyless entry keypad has a separate ground circuit for the LEDs. The keyless entry keypad has an anti-scan feature to help prevent theft. If a valid 5-digit code is not entered within 7 attempts (35 consecutive button presses), the keyless entry keypad goes into anti-scan mode. In anti-scan mode, the keypad illumination flashes and all input is ignored except for pressing the 7/8 and 9/0 buttons, which locks all the doors. DTC B1624 (Lamp Keypad Output Open Circuit) - a continuous and on-demand DTC that sets when the SJB detects the keyless entry keypad illumination output circuit is open or shorted to voltage. DTC B1626 (Lamp Keypad Output Short Circuit To Ground) - an on-demand DTC that sets when the SJB detects the keyless entry keypad illumination output circuit is shorted to ground. This pinpoint test is intended to diagnose the following: Wiring, terminals or connectors Keyless entry keypad SJB