Power Door Lock Relay: Testing and Inspection

Terminal Identification:

Reference:

1. INSPECT DOOR LOCK CONTROL RELAY CIRCUIT
Disconnect the connector from the relay and inspect the connector on the wire harness side, as shown in the chart. If circuit is as specified, inspect the door lock signal.
If the circuit is not as specified, inspect the circuits connected to other parts.

Door Lock Signal:

HINT: When the relay circuit is as specified, inspect the door lock signal.

a. Connect the connector to the relay.
b. Connect the positive (+) lead from the voltmeter to terminal 3 and the negative (-) lead to terminal 4.
c. Set the door lock manual switch to UNLOCK, and check that the voltage rises from 0 V to battery positive voltage for approximately 0.2 seconds.

d. Reverse the polarity of the voltmeter leads.
e. Set the door lock manual switch to LOCK, and check that the voltage rises from 0 V to battery positive voltage for approximately 0.2 seconds.
If operation is not as specified, replace the relay.

Key-Off Power Window Signal:

HINT: When the relay circuit is as specified, inspect the key-off power window signal.

a. Connect the connector to the relay.
b. Connect the positive (+) lead from the voltmeter to terminal 15 and the negative (-) lead to terminal 16.
c. Close the door with ignition switch turned to LOCK or ACC, check that the meter needle indicates battery positive voltage.

d. Open the door, check that the meter needle indicates 0 V.
e. Turn the ignition switch ON, check that the meter needle indicate battery positive voltage again.
If operation is not as specified, replace the relay.