Power Door Lock Relay: Testing and Inspection

Door lock signal:

INSPECT INTEGRATION RELAY OPERATION




a. Connect the positive (+) lead from the battery to terminal 1.
b. Connect the negative (-) lead from the battery to terminals 5, 6 and 10.
c. Check the buzzer sounds.




d. Disconnect the negative (-) lead from the battery to terminal 6.
e. Check that the buzzer stops sounding.




f. Connect the negative (-) lead from the battery to terminal 6.
g. Disconnect the negative (-) lead from the battery to terminal 5.
h. Check that the buzzer stops sounding.
If operation is not as specified, replace the relay.

INSPECT INTEGRATION RELAY CIRCUIT







a. Remove the relay from the junction block No.1 and inspect the connector on the junction block side.










b. Disconnect the connector from the integration relay and inspect the connectors on the wire harness 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.

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




a. Connect the positive (+) lead from the voltmeter to terminal A12 and the negative (-) lead to terminal A25.
b. 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.




c. Reverse the polarity of the voltmeter leads.
d. 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 integration relay.

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 A3 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 INTEGRATION RELAY CIRCUIT

Inspection switch adjustment procedures
1. Connect the power window master switch to the wire harness and turn the ignition switch ON.
2. Fully open the door glass manually.
3. Using a round bar that is 2 Sq. mm, press the reset switch.

CAUTION: When using an iron wire, take care not to use a wire with a sharp edge.

4. With the reset switch pressed, fully open the door glass with the master switch.

CAUTION:
- Operate manually.
- While opening the door glass, if any vibration is felt on the pressed reset switch, pressing force is weak, so repeat step (2).

5. Remove the bar and fully open the door glass. Operate manually.
6. Check that the door glass can be opened and closed fully by AUTO operation.
7. Checklist for power window malfunction.

INSPECT INTEGRATION RELAY SEAT BELT WARNING SYSTEM OPERATION




a. Connect the positive (+) lead from the battery to terminals 1 and 7.
b. Connect the terminal 7 to terminal 9 through the 3.4W test bulb.
c. Connect the negative (-) lead from the battery to terminal 10.
d. Check that the bulb lights and the buzzer sounds for 4 to 8 seconds.
e. Return to step a.and operate the chime again.




f. Connect the negative (-) lead from the battery to terminal 8.
g. Check that the buzzer stops sounding.

HINT: Check the buzzer within a period of 4 to 8 seconds.
If operation is not as specified, replace the relay.

Seat belt warning
INSPECT INTEGRATION RELAY CIRCUIT







Remove the relay from the junction block No.1 and inspect the connectors on the junction block side.
If the circuit is as specified, try to replace the relay with a new one.
If the circuit is not as specified, inspect the circuits connected to other parts.