POWER DOOR LOCK CONTROL SYSTEM All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch

DESCRIPTION

The main body ECU receives switch signals from the door control switch and activates the door lock motor on each door according to these signals.

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   READ VALUE USING INTELLIGENT TESTER (DOOR LOCK AND UNLOCK SWITCH)

   
   

   1. Use the Data List to check if the door lock and unlock switches are functioning properly.

      Table 1. Main Body ECU

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      Door Lock SW-Lock	Door manual lock switch signal / ON or OFF	ON: Front passenger side door control switch on (lock) OFF: Front passenger side door control switch off	-
      Door Unlock SW-Unlock	Door manual unlock switch signal / ON or OFF	ON: Front passenger side door control switch on (unlock) OFF: Front passenger side door control switch off	-

      OK
      On the intelligent tester screen, each item changes between ON and OFF according to above chart.

   
   
   • OKClick here
   • NGClick here
2. Click here

   INSPECT FUSE (DOOR NO. 1, DOOR NO. 2)

   
   

   1. Remove the DOOR NO. 1 fuse from the main body ECU (cowl side junction block LH).

   2. Remove the DOOR NO. 2 fuse from the engine room relay block.

   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition DOOR NO. 1 fuse Always Below 1 Ω DOOR NO. 2 fuse Always Below 1 Ω

   
   
   • OKClick here
   • NGClick here
3. Click here

   CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - BATTERY AND BODY GROUND)

   
   

   1. Disconnect the 2A, 2B, and 2D ECU connectors.

   2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition 2A-1 (ALTB) - Body ground Always 11 to 14 V 2B-20 (BATB) - Body ground Always 11 to 14 V

   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition 2D-62 (GND2) - Body ground Always Below 1 Ω

   
   
   • OKClick here
   • NGClick here
4. Click here

   INSPECT DOOR CONTROL SWITCH ASSEMBLY (DOOR LOCK AND UNLOCK SWITCH)

   
   

   1. Remove the door control switch (Click here).

   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition 2 (UL) - 3 (E) Unlock Below 1 Ω 2 (UL) - 3 (E) 4 (L) - 3 (E) Off 10 kΩ or higher 4 (L) - 3 (E) Lock Below 1 Ω

   
   
   • OKClick here
   • NGClick here
5. Click here

   CHECK HARNESS AND CONNECTOR (MAIN BODY ECU - DOOR CONTROL SWITCH AND BODY GROUND)

   
   

   1. Disconnect the 2D ECU connector.

   2. Disconnect the I33 switch connector.

   3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition 2D-52 (UL1) - I33-2 (UL) Always Below 1 Ω 2D-49 (L1) - I33-4 (L) Always Below 1 Ω I33-3 (E) - Body ground Always Below 1 Ω I33-2 (UL) - Body ground Always 10 kΩ or higher I33-4 (L) - Body ground Always 10 kΩ or higher

   
   
   • OKClick here
   • NGClick here
6. Click here

   REPLACE MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

7. Click here

   REPLACE DOOR CONTROL SWITCH ASSEMBLYClick here

8. Click here

   REPAIR OR REPLACE HARNESS OR CONNECTOR

9. Click here

   REPLACE FUSE