Power Door Lock Control Module: Testing and Inspection
DOOR LOCK CONTROL UNIT1. Remove the knee protector.
2. Remove the door lock control unit from the relay box.
3. Apply battery voltage to terminals (8).
4. Perform the following check.
1. With terminals (4), (5) and (7) grounded,
Connect a needle-type circuit tester between terminal (3) and the ground, and after switching it to the DCV range, and check if the needle moves at the instant when the connection at terminal (5) or (7) is removed.
2. With terminals (4) and (5) grounded,
Connect a needle-type circuit tester between terminal (3) and the ground, and after switching it to the DCV range, and check if the needle moves at the instant when the connection at terminal (7) is grounded.
3. With terminal (4) grounded,
Connect a needle-type circuit tester between terminal (3) and the ground, and after switching it to the DCV range, and check if the needle doesn't move when terminal (7) is grounded.
5. Also, check if there is a voltage of 12 V between terminal (6) and the ground, and between terminal (2) and the ground.
NOTE: The reason why the needle of the circuit tester moves in (4) above is because battery voltage appears between terminals (1) and (3) and the ground for approximately 0.5 seconds.