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All Doors Cannot Be Locked / Unlocked Simultaneously








DOOR LOCK: POWER DOOR LOCK CONTROL SYSTEM: All Doors cannot be Locked / Unlocked Simultaneously

All Doors cannot be Locked / Unlocked Simultaneously

DESCRIPTION

The multiplex network body ECU activates the door lock motors with switch signals from the master switch, door control switch and driver/passenger side door key cylinder.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. INSPECT ALL DOORS LOCK/UNLOCK OPERATION
(a) All the doors can be locked/unlocked simultaneously using the following items:

- Door control switch on the master switch (switch operation)
- Door control switch on the front passenger side (switch operation)
- Door key cylinder linked with driver side door lock (key operation)

(b) If all the doors cannot be locked/unlocked simultaneously, proceed to the next step according to the malfunctioning part shown in the table below.
Result:





E -- INSPECT FUSE (ECU-B, DOOR1, D.C.C)
D -- INSPECT FRONT DOOR LOCK ASSEMBLY LH (DOOR LOCK MOTOR)
C -- INSPECT FRONT DOOR LOCK ASSEMBLY LH (DOOR LOCK MOTOR)
B -- INSPECT DOOR CONTROL SWITCH ASSEMBLY
A -- Continue to next step.
2. INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (DOOR CONTROL SWITCH)





(a) Measure the resistance of the door control switch.
Standard resistance:





NG -- REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY
OK -- Continue to next step.
3. CHECK WIRE HARNESS (MASTER SWITCH - INSTRUMENT PANEL J/B AND BODY GROUND)





(a) Disconnect the D8 switch connector.
(b) Disconnect the 2K J/B connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (MULTIPLEX NETWORK BODY ECU)
4. INSPECT DOOR CONTROL SWITCH ASSEMBLY





(a) Measure the resistance of the switch.
Standard resistance:





NG -- REPLACE DOOR CONTROL SWITCH ASSEMBLY
OK -- Continue to next step.
5. CHECK WIRE HARNESS (DOOR CONTROL SWITCH - INSTRUMENT PANEL J/B AND BODY GROUND)





(a) Disconnect the D9 switch connector.
(b) Disconnect the 2J J/B connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (MULTIPLEX NETWORK BODY ECU)
6. INSPECT FRONT DOOR LOCK ASSEMBLY LH (DOOR LOCK MOTOR)





(a) Apply battery voltage to the door lock and check operation of the door lock motor.
OK:





NG -- REPLACE FRONT DOOR LOCK ASSEMBLY LH
OK -- Continue to next step.
7. INSPECT FRONT DOOR LOCK ASSEMBLY LH (DOOR LOCK AND UNLOCK SWITCH AND POSITION SWITCH)





(a) Measure the resistance of the door lock and unlock switch and position switch.
Standard resistance:
Door lock and unlock switch
Position switch









NG -- REPLACE FRONT DOOR LOCK ASSEMBLY LH
OK -- Continue to next step.
8. CHECK WIRE HARNESS (DOOR LOCK - MPX BODY ECU, INSTRUMENT PANEL J/B - BODY GROUND)





(a) Disconnect the D7 lock connector.
(b) Disconnect the B8 ECU connector.
(c) Disconnect the 2K J/B connector.
(d) Measure the resistance of the wire harness side connectors.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (MULTIPLEX NETWORK BODY ECU)
9. INSPECT FRONT DOOR LOCK ASSEMBLY LH (DOOR LOCK MOTOR)





(a) Apply battery voltage to the door lock and check operation of the door lock motor.
OK:





NG -- REPLACE FRONT DOOR LOCK ASSEMBLY LH
OK -- Continue to next step.
10. INSPECT FRONT DOOR LOCK ASSEMBLY LH (DOOR LOCK AND UNLOCK SWITCH AND POSITION SWITCH)





(a) Measure the resistance of the door lock and unlock switch and position switch.
Standard resistance:
Door lock and unlock switch
Position switch









NG -- REPLACE FRONT DOOR LOCK ASSEMBLY LH
OK -- Continue to next step.
11. CHECK WIRE HARNESS (DOOR LOCK - MPX BODY ECU, INSTRUMENT PANEL J/B - BODY GROUND)





(a) Disconnect the D7 lock connector.
(b) Disconnect the B8 ECU connector.
(c) Disconnect the 2K J/B connector.
(d) Measure the resistance of the wire harness side connectors.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.
12. INSPECT POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY (DOOR CONTROL SWITCH)





(a) Measure the resistance of the door control switch.
Standard resistance:





NG -- REPLACE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY
OK -- Continue to next step.
13. CHECK WIRE HARNESS (MASTER SWITCH - INSTRUMENT PANEL J/B AND BODY GROUND)





(a) Disconnect the D8 switch connector.
(b) Disconnect the 2K J/B connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (MULTIPLEX NETWORK BODY ECU)
14. INSPECT FUSE (ECU-B, DOOR1, D.C.C)
(a) Remove the ECU-B fuse from the instrument panel J/B.
(b) Remove the DOOR1 and D.C.C fuses from the engine room J/B.
(c) Measure the resistance of the fuse.
Standard resistance:
Below 1 Ohms
NG -- REPLACE FUSE
OK -- Continue to next step.
15. CHECK WIRE HARNESS (INSTRUMENT PANEL J/B - INSTRUMENT PANEL J/B, BAT AND GND)
(a) Disconnect the 2C, 2F, 2G and 2K instrument panel J/B connectors.





(b) Measure the voltage and resistance of the wire harness side connectors.
Standard voltage:





Standard resistance:





HINT: *1: Coupe

*2: Convertible

NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (MULTIPLEX NETWORK BODY ECU)
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