Test E: DTC B2A25 - Trim Panel Lock Switch Circuit Failure
PINPOINT TEST E: DTC B2A25 - TRIM PANEL LOCK SWITCH CIRCUIT FAILURENormal Operation
The door lock control switches provide a ground circuit GD179 (BK/VT) for the smart junction box (SJB) lock and unlock signal circuits CPK19 (BU/GN) and CPK23 (YE/VT). The door lock actuator output circuits CPL11 (GY/BN), CPL13 (BN/GN) and CPL43 (VT/GY) are at ground on circuit GD179 (BK/VT) through the SJB when the lock and unlock relays are not energized.
When the SJB receives a lock request through circuit CPK19 (BU/GN), the SJB processes the lock request and energizes the all lock relay, supplying voltage to circuit CPL11 (GY/BN) to lock the doors. Circuits CPL13 (BN/GN) and CPL43 (VT/GY) are at ground on circuit GD179 (BK/VT) through the SJB.
When the SJB receives an unlock request through circuit CPK23 (YE/VT), the SJB processes the unlock request and energizes the all unlock relay and driver unlock relay supplying voltage to circuits CPL13 (BN/GN) and CPL43 (VT/GY) to unlock the doors. Circuit CPL11 (GY/BN) is at ground on circuit GD179 (BK/VT) through the SJB.
- DTC B2A25 (Trim Panel Lock Switch Circuit Failure) - is an on-demand DTC that sets when the SJB detects a short to ground from the lock or unlock request input circuits. This DTC may also set if either of the door lock control switches are pressed for longer than 2 minutes.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Door lock control switch
- SJB
E1-E4:
E4-E5:
