Test E: The Doors Do Not Lock/Unlock Using The Keyless Entry Keypad
PINPOINT TEST E: THE DOORS DO NOT LOCK/UNLOCK USING THE KEYLESS ENTRY KEYPADNormal Operation
The vehicle security module (VSM) monitors for a ground signal on the reference circuits 78 (LB/YE), 122 (YE) and 123 (RD) for the keyless entry keypad. When an individual keypad button is pressed, an individual or combination of the reference circuits is routed to ground. The VSM then determines which button was pressed based on which circuit(s) are grounded. The keypad is grounded through circuit 57 (BK). Once the VSM determines that the 5-digit entry code has been entered on the keypad, the VSM then energizes the driver door unlock relay to unlock the driver door.
To unlock all the doors, the 3/4 button must be pressed within 5 seconds of the 5-digit code being entered.
To lock all doors, the 5-digit code does not need to be entered. Press the 7/8 and 9/0 buttons at the same time.
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 will go into anti-scan. In anti-scan mode, the keypad illumination will flash and all input will be ignored except for pressing the 7/8 and 9/0 buttons, which will lock all doors.
- DTC B2695 (Keypad_A Switch Circuit Failure) - is an on-demand DTC that sets if the VSM detects a short to ground on the keyless entry keypad switch A input circuit 78 (LB/YE).
- DTC B2696 (Keypad_B Switch Circuit Failure) - is an on-demand DTC that sets if the VSM detects a short to ground on the keyless entry keypad switch B input circuit 122 (YE).
- DTC B2697 (Keypad_C Switch Circuit Failure) - is an on-demand DTC that sets if the VSM detects a short to ground on the keyless entry keypad switch C input circuit 123 (RD).
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Keyless entry keypad
- VSM
E1-E6:
E6-E9:
E9-E10:
