Front Passenger Side Seat Belt Warning Light Malfunction: Procedure

1. Clear DTCs. Refer to DTC CHECK/CLEAR [03/2012 - ] .
2. Recheck for DTCs. Refer to DTC CHECK/CLEAR [03/2012 - ] .

   Result

   Result	Proceed to
   DTC is not output	A
   DTC is output	B

B → See step   7 

A: Go to next step 

1. Clear DTCs. Refer to DTC CHECK/CLEAR [03/2012 - ] .
2. Recheck for DTCs. Refer to DTC CHECK/CLEAR [03/2012 - ] .

   Result

   Result	Proceed to
   DTC is not output	A
   DTC is output	B

B → See step   8 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical/Occupant Detection/Data List.
5. Read the Data List according to the display on the Techstream.
   OCCUPANT DETECTION (OCCUPANT DETECTION ECU)
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Status of Passenger Side Buckle SW	Front passenger buckle switch/Set, Unset or NG	Set: Seat belt fastened Unset: Seat belt not fastened NG: Data is not determined	-

   RESULT
   
   

   Result	Proceed to
   Unset or Set is displayed on the Techstream screen according to the front passenger seat belt condition	A
   Unset or Set is not displayed normally on the Techstream screen according to the front passenger seat belt condition	B
   NG is displayed on the Techstream screen	C

B → See step   9 

C → See step   10 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical/Combination Meter/Data List.
5. Read the Data List according to the display on the Techstream.
   SRS AIRBAG (AIRBAG SENSOR ASSEMBLY)
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   P-Seatbelt Buckle SW	Front passenger buckle switch/ON or OFF	ON: Seat belt is not fastened OFF: Seat belt is fastened	-

   RESULT
   
   

   Result	Proceed to
   ON or OFF is displayed on the Techstream screen according to the front passenger seat belt condition	A
   ON or OFF is not displayed normally on the Techstream screen according to the front passenger seat belt condition	B

B → See step   11 

A: Go to next step 

1. Remove the clock assembly. Refer to REMOVAL [03/2012 - 05/2013] .
2. Apply battery voltage to the connector and check the illumination condition.
   Fig 1: Identifying Component Without Harness Connected (Clock Assembly)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Result

   Condition	Specified Condition
   Battery positive (+) → 10 (LAPB) Battery negative (-) → 6 (LAPL)	Front passenger side seat belt warning light comes on

   TEXT IN ILLUSTRATION
   
   

   *a	Component without harness connected (Clock Assembly)

NG → REPLACE CLOCK ASSEMBLY 

OK: Go to next step 

1. Disconnect the D18 clock assembly connector.
2. Disconnect the D7 combination meter assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Switch Condition	Specified Condition
   D18-6 (LAPL) - D7-13 (P/SB)	Always	Below 1 Ω
   D18-6 (LAPL) - Body ground	Always	10 kΩ or higher

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   D18-10 (LAPB) - Body ground	Ignition switch ON	11 to 14 V

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   12