Pinpoint Test B - Keyless Entry Pad Diagnosis (Explorer)

Unlock driver's door with keypad code obtained from vehicle owner. Ensure that keypad and interior lights illuminate with first button press. Press 3/4 button within 5 seconds of unlocking doors with keypad code. Press 7/8 and 9/10 button to lock all doors, and turn off keypad and interior lights. If system operates as specified, no problem is indicated at this time. If keypad code did not work, go to next step. If doors unlock but keypad does not illuminate, go to step 4). If only one keypad button does not seem to function, go to step 3).
Connect NGS tester following manufacturers instructions. Enter PID/DATA. Select KEYCODE. Ensure displayed keycode matches vehicle owners keycode. If keycodes match, go to next step. If keycodes do not match, inform vehicle owner of correct keycode to use.
Enter PID/DATA. select KEY-PAD. Ensure that numbers do not display when keypad buttons are not pressed. Press all keypad buttons separately. Ensure display shows only button being pressed. If keypad operates as specified, contact RAP module manufacturer for additional information. If a keypad number is displayed when no buttons are pressed, check for keypad button short to ground. If no number is displayed when a button is pressed, check for open in keypad assembly. If more than one number is displayed when only one keypad button is pressed, check for short between keypad buttons.
Enter RAP and ACTIVE COMMANDS. select KEYPAD BACK LIGHTING and turn it on. If keypad illuminates, repeat step 3). If keypad does not illuminate, go to next step.
Disconnect RAP module. Temporarily jump keypad illumination circuit Pin No. 15 (Light Blue wire) to Pin No. 12 (White/Light Blue wire) at harness connector. If keypad does not illuminate, go to next step. If keypad illuminates, contact RAP module manufacturer for additional information.
Disconnect keypad pigtail from harness. Temporarily jumper keypad illumination circuit Light Blue wire to battery positive and jumper Black wire to ground on pigtail connected to keypad. If keypad illuminates, repair keypad wiring harness or poor ground. If keypad does not illuminate, replace keypad.