Power Door Lock Relay: Testing and Inspection

INSPECT KEY UNLOCK WARNING SYSTEM (INSPECT INTEGRATION RELAY OPERATION)




a. Connect the positive (+) lead from the battery to terminal 3.
b. Connect the negative (-) lead from the battery to terminals 4, 7 and 8.
c. Check that the buzzer sounds.




d. Disconnect the negative (-) lead from the battery to terminal 8.
e. Check that the buzzer stops sounding.







f. Connect the negative (-) lead from the battery to terminal 8 and operate the buzzer sound again.
g. Disconnect the negative (-) lead from the battery to terminal 4.
h. Check that the buzzer stops sounding.
If operation is not as specified, replace the relay.

INSPECT INTEGRATION RELAY CIRCUIT







a. Disconnect the connector from the integration relay and inspect the connectors on the wire harness side.
If the circuit is not as specified, inspect the circuits connected to other parts.







b. Remove the integration relay from the instrument panel junction block and inspect the connectors on the junction block side.
If the circuit is as specified, try replacing the relay with a new one.
If the circuit is not as specified, inspect the circuits connected to other parts.

Key-Off power window signal: INSPECT INTEGRATION RELAY OPERATION

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




a. Connect the positive (+) lead from the voltmeter to terminal 14 and the negative (-) lead to body ground.
b. Close the door with ignition switch turned to LOCK or ACC, and check that the meter needle indicates battery positive voltage.
c. Open the door and check that the meter needle indicates 0 V.




d. Turn the ignition switch ON and check that the meter needle indicates battery positive voltage again.
If operation is not as specified, replace the relay.







INSPECT DOOR LOCK CONTROL RELAY (INTEGRATION RELAY) CIRCUIT
Disconnect the connector from the integration 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 and key-off power window signal.







Door lock signal: INSPECT DOOR LOCK CONTROL RELAY (INTEGRATION RELAY) OPERATION

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

a. Connect the relay connector.
b. Connect the positive (+) lead from the voltmeter to terminal 8 and the negative (-) lead to terminal 7.
c. Set the door lock control 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 control 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.