Door Unlock Detection Switch Circuit: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Main Body / Data List.
5. Read the display on the Techstream.
   MAIN BODY
   
   

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

   Result

   Result	Proceed to
   OK	A
   Front door unlock detection switch LH does not operate	B
   Front door unlock detection switch RH does not operate	C
   Rear door unlock detection switch LH does not operate	D
   Rear door unlock detection switch RH does not operate	E

B → See step   2 

C → See step   4 

D → See step   6 

E → See step   9 

A → See step   12 

1. Inspect the front door lock assembly LH. Refer to INSPECTION .

   OK

   Front door lock assembly LH is normal.

NG → See step   13 

OK: Go to next step 

1. Disconnect the O8 front door lock assembly LH connector.
2. Disconnect the L7 main body ECU (multiplex network body ECU) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   O8-8 (LSSR) - L7-7 (LSFL)	Always	Below 1 Ω
   O8-8 (LSSR) - Body ground	Always	10 kΩ or higher
   O8-7 (E) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   17 

1. Inspect the front door lock assembly RH. Refer to INSPECTION .

   OK

   Front door lock assembly RH is normal.

NG → See step   14 

OK: Go to next step 

1. Disconnect the N8 front door lock assembly RH connector.
2. Disconnect the L7 main body ECU (multiplex network body ECU) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection (Symbols)	Condition	Specified Condition
   N8-7 (LSSR) - L7-18 (LSFR)	Always	Below 1 Ω
   N8-7 (LSSR) - Body ground	Always	10 kΩ or higher
   N8-8 (E) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   17 

1. Inspect the rear door lock assembly LH. Refer to INSPECTION .

   OK

   Rear door lock assembly LH is normal.

NG → See step   15 

OK: Go to next step 

1. Disconnect the Q1 rear door lock assembly LH connector.
2. Disconnect the 2D instrument panel junction block assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   Q1-6 (LSSR) - 2D-25	Always	Below 1 Ω
   Q1-6 (LSSR) - Body ground	Always	10 kΩ or higher
   Q1-9 (E) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the instrument panel junction block assembly.
   Fig 1: Identifying Instrument Panel Junction Block Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   2D-25 - A-5 (LSR)	Always	Below 1 Ω
   2D-25 - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Instrument Panel Junction Block Assembly)

NG → REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

OK → See step   17 

1. Inspect the rear door lock assembly RH. Refer to INSPECTION .

   OK

   Rear door lock assembly RH is normal.

NG → See step   16 

OK: Go to next step 

1. Disconnect the P1 rear door lock assembly RH connector.
2. Disconnect the 2B main body ECU (multiplex network body ECU) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   P1-6 (LSSR) - 2B-29	Always	Below 1 Ω
   P1-6 (LSSR) - Body ground	Always	10 kΩ or higher
   P1-9 (E) - Body ground	Always	Below 1 Ω

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Remove the instrument panel junction block assembly.
   Fig 2: Identifying Instrument Panel Junction Block Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   2B-29 - A-5 (LSR)	Always	Below 1 Ω
   2B-29 - Body ground	Always	10 kΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Component without harness connected (Instrument Panel Junction Block Assembly)

NG → REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY 

OK → See step   17