Pinpoint Test F: The Doors Do Not Lock/Unlock Using The Keyless Entry Keypad

Locks, Latches and Entry Systems







Pinpoint Test F: The Doors Do Not Lock/Unlock Using The Keyless Entry Keypad

Refer to Wiring Diagram Set 117, Remote Keyless Entry and Alarm for schematic and connector information. Diagrams By Number

Normal Operation

The Smart Junction Box (SJB) monitors for a ground signal 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, 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. Circuit GD134 (BK/VT) is the ground for the keypad buttons. 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, the 3/4 button must be pressed within 5 seconds of the 5-digit code being entered.

To lock all the doors, 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.

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 goes into anti-scan. In anti-scan mode, the keypad illumination flashes and all input is ignored except for pressing the 7/8 and 9/0 buttons, which locks all doors.

- DTC B2A26 (Keypad Switch Circuit Failure) - a continuous and on-demand DTC that sets when the SJB detects a short to ground on any of the keyless entry keypad input circuits CPK29 (GY/BU), CPK30 (VT/GN) or CPK31 (YE/GN). The DTC is also set if any of the keyless entry keypad buttons are actuated for longer than 2 minutes.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- Keyless entry keypad
- SJB



PINPOINT TEST F: THE DOORS DO NOT LOCK/UNLOCK USING THE KEYLESS ENTRY KEYPAD

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.

F1-F6:

F6-F9:

F9-F10: