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 locked and rear door RH unlocked ON: Rear door LH unlocked and rear door RH locked ON: Rear door LH and rear door RH unlocked OFF: Rear door LH and rear door RH locked	-
   RR-Door Lock Pos SW	Rear door unlock detection switch RH signal/ON or OFF	ON: Rear door LH locked and rear door RH unlocked ON: Rear door LH unlocked and rear door RH locked ON: Rear door LH and rear door RH unlocked OFF: Rear door LH and rear door RH locked	-

   OK

   Normal conditions listed above are displayed.

   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 and rear door unlock detection switch RH does not operate	D

B → See step   2 

C → See step   4 

D → See step   6 

A → See step   11 

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

   OK

   Front door lock assembly LH is normal.

NG → See step   12 

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   16 

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

   OK

   Front door lock assembly RH is normal.

NG → See step   13 

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   16 

1. Remove the rear door lock with motor assembly LH. Refer to REMOVAL .
2. Inspect the rear door lock with motor assembly LH. Refer to INSPECTION .

   OK

   Rear door lock with motor assembly LH is normal.

NG → See step   14 

OK: Go to next step 

1. Disconnect the Q1 rear door lock with motor 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 rear door lock with motor assembly RH. Refer to REMOVAL .
2. Inspect the rear door lock with motor assembly RH. Refer to INSPECTION .

   OK

   Rear door lock with motor assembly RH is normal.

NG → See step   15 

OK: Go to next step 

1. Disconnect the P1 rear door lock with motor assembly RH connector.
2. Disconnect the 2B 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
   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. Refer to REMOVAL .
2. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly. Refer to REMOVAL .
   Fig 1: Inspecting 2B, 2D & MB Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   TEXT IN ILLUSTRATION
   
   

   *a

   Component without harness connected (Instrument Panel Junction Block Assembly)

   -

   -

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

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   2B-29 - MB-5 (LSR)	Always	Below 1 Ω
   2D-25 - MB-5 (LSR)	Always	Below 1 Ω

NG → See step   17 

OK → See step   16