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 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. The keypad is grounded through circuit GD133 (BK). When an individual keypad button is pressed an individual or a combination of the reference circuits are connected to ground. The SJB then determines which button was pressed based on which circuit(s) has a ground signal. Once the SJB determines that the 5-digit personal entry code, or the factory set 5-digit 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.
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:
H2-H7:
H7-H10:
