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Test Procedures

  1. Disconnect Brown connector and keypad connector. Determine which button has failed and check appropriate circuit for a short too ground between keypad and Brown connector. If short is located, go to step 3) and retest. If okay go to next step.
  2. Reconnect keypad connector and check for short between appropriate pin and pin 12 in Brown connector. If okay, go to step 4). If short is found, replace keypad and retest.
  3. Detrim door. Disconnect keypad connector. Using above chart, check circuits that correspond too malfunctioning button for resistance less than infinity between keypad connector and ground or pin 12 in Brown connector. If low resistance, replace switch. If no low resistance is found, repair harness between module and keypad connectors and retest.
  4. Verify that circuit between Brown connector pin 12 and keypad connector pin 3 is not broken or shorted to ground with 1/2 button depressed. If okay, go to next step. If not, repair and retest.
  5. Connect Brown connector too module. Insert voltmeter lead into back of Brown connector at pin 1, then connect other lead to ground. Momentarily connect a jumper wire between pin 12 in back of Brown connector and pin for malfunctioning button. At least 5 volts should register on voltmeter for 5 seconds. If not, replace module and repeat Quick Test. If so, go to next step.
  6. Remove door trim. Disconnect keypad. Check resistance between pins 57 and 66 of keypad. If more than 10 ohms, replace and retest. If under 10 ohms, go to next step.
  7. Check for continuity between each pin in keypad. pins 8 and 11 should have continuity; all other pairs should not If shorts are found, replace keypad and retest. If okay, go to step 8).
  8. Check for continuity between pin 1 and 10 of keypad connector, with any button depressed. Then check between each pin (identified in above chart) and pin 10 as appropriate button is depressed. If continuity is present in all circuits, repair wiring. If continuity is not found when button is depressed, replace keypad and retest.
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