Test H: The Doors Do Not Lock/Unlock Using The Keyless Entry Keypad
PINPOINT TEST H: THE DOORS DO NOT LOCK/UNLOCK USING THE KEYLESS ENTRY KEYPADNormal Operation
The smart junction box (SJB) monitors the voltage drop on the 12-volt reference circuits CPK29 (GY/BU), CPK30 (VT/GN), and CPK31 (YE/GN) for the keyless entry keypad. When an individual keypad button is pressed, circuits CPK29 (GY/BU), CPK30 (VT/GN), and CPK31 (YE/GN) each have a different voltage drop value. The SJB then determines which button was pressed based on the voltage drop values on each of the circuits. Once the SJB determines that the 5-digit personal entry code, or the factory set 5-digit entry code has been entered on the keypad, the SJB then energizes the driver door unlock relay to unlock the driver door.
To unlock all the doors and liftgate, the 3/4 button must be pressed within 5 seconds of the 5-digit code being entered.
To lock all the doors and liftgate, the 5-digit code does not need to be entered. Press the 7/8 and 9/0 buttons at the same time, with the driver door closed.
- DTC B2A26 (Keypad Switch Circuit Failure) - is a continuous and on-demand DTC that sets when the SJB detects a short to ground on any of the keypad input circuits. This DTC may also set if any of the keypad buttons are pressed for longer than 2 minutes.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Keyless entry keypad
- SJB
H1-H5:
H5-H8:
H8-H10:
