LIGHTING SYSTEM Door Unlock Detection Switch Circuit

DESCRIPTION

The main body ECU detects the condition of each door unlock detection switch.

PROCEDURE

1. Click here

   READ VALUE USING INTELLIGENT TESTER

   
   

   1. Connect the intelligent tester to the DLC3.

   2. Turn the ignition switch to ON.

   3. Turn the intelligent tester on.

   4. Enter the following menus: Body / Main Body / Data List.

   5. According to the display on the intelligent tester, read the Data List.

      Table 1. Main Body

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      FR Door Lock Pos	Front door unlock detection switch RH signal / LOCK or UNLOCK	LOCK: Front door RH locked UNLOCK: Front door RH unlocked	-
      FL Door Lock Pos	Front door unlock detection switch LH signal / LOCK or UNLOCK	LOCK: Front door LH locked UNLOCK: Front door LH unlocked	-
      RR-Door Lock Pos SW*1*2	Rear door unlock detection switch LH and RH signal / OFF or ON	OFF: Rear door LH and RH locked ON: Rear door LH or RH unlocked	-
      RL-Door Lock Pos SW*1*2	Rear door unlock detection switch LH and RH signal / OFF or ON	OFF: Rear door LH and RH locked ON: Rear door LH or RH unlocked	-

      OK
      Normal conditions listed above are displayed.

      Table 2. Result

      Result	Proceed to
      OK	A
      NG (Front door unlock detection switch does not operate)	B
      NG (Rear door unlock detection switch does not operate)*1*2	C

      
      

      • *1: for 5 Door

      • *2: for TMMF Made

   
   
   • A

     PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (Click here)

   • BClick here
   • CClick here
2. Click here

   INSPECT FRONT DOOR LOCK ASSEMBLY

   
   

   1. Inspect the front door lock assembly (Click here).

   
   
   • OKClick here
   • NG

     REPLACE FRONT DOOR LOCK ASSEMBLY (Click here)

3. Click here

   CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY - MAIN BODY ECU AND BODY GROUND)

   
   

   1. Disconnect the H5 or G5 front door lock assembly connector.

   2. Disconnect the F76 main body ECU connector.

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

      Standard Resistance
      Table 3. LH Tester Connection Condition Specified Condition H5-8 (LSSR) - F76-7 (LSFL) Always Below 1 Ω H5-8 (LSSR) - Body ground Always 10 kΩ or higher H5-7 (E) - Body ground Always Below 1 Ω
      Table 4. RH Tester Connection Condition Specified Condition G5-7 (LSSR) - F76-18 (LSFR) Always Below 1 Ω G5-7 (LSSR) - Body ground Always 10 kΩ or higher G5-8 (E) - Body ground Always Below 1 Ω

   
   
   • OK

     REPLACE MAIN BODY ECU (Click here)

   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

4. Click here

   INSPECT REAR DOOR LOCK ASSEMBLY

   
   

   1. Inspect the rear door lock assembly (Click here).

   
   
   • OKClick here
   • NG

     REPLACE REAR DOOR LOCK ASSEMBLY (Click here)

5. Click here

   CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

   
   

   1. Disconnect the J3 or I3 rear door lock assembly connector.

   2. Disconnect the 3D instrument panel junction block assembly connector.

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

      Standard Resistance
      w/ Double Locking System
      Table 5. LH Tester Connection Condition Specified Condition J3-5 (LSSR) - 3D-24 Always Below 1 Ω J3-5 (LSSR) - Body ground Always 10 kΩ or higher J3-6 (E) - Body ground Always Below 1 Ω
      Table 6. RH Tester Connection Condition Specified Condition I3-9 (LSSR) - 3D-25 Always Below 1 Ω I3-9 (LSSR) - Body ground Always 10 kΩ or higher I3-10 (E) - Body ground Always Below 1 Ω
      w/o Double Locking System
      Table 7. LH Tester Connection Condition Specified Condition J3-6 (LSSR) - 3D-24 Always Below 1 Ω J3-6 (LSSR) - Body ground Always 10 kΩ or higher J3-9 (E) - Body ground Always Below 1 Ω
      Table 8. RH Tester Connection Condition Specified Condition I3-6 (LSSR) - 3D-25 Always Below 1 Ω I3-6 (LSSR) - Body ground Always 10 kΩ or higher I3-9 (E) - Body ground Always Below 1 Ω

   
   
   • OKClick here
   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR

6. Click here

   INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

   
   

   1. Remove the instrument panel junction block assembly.

   2. Remove the main body ECU from the instrument panel junction block assembly.

   3. 

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

      Table 9. Text in Illustration

      *a

      Component without harness connected (Instrument Panel Junction Block Assembly)

      -

      -

      Standard Resistance
      Table 10. LH Tester Connection Condition Specified Condition 3D-24 - MB-5 (LSR) Always Below 1 Ω
      Table 11. RH Tester Connection Condition Specified Condition 3D-25 - MB-5 (LSR) Always Below 1 Ω

   
   
   • OK

     REPLACE MAIN BODY ECU (Click here)

   • NG

     REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY