DTC B16F1: Passenger Side Belt Warning Indicator Circuit: Procedure

1. Turn the ignition switch off.
2. Disconnect the cable from the negative (-) battery terminal.
   WARNING:

   Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

3. Check that the connectors are properly connected to the airbag ECU assembly and combination meter assembly.

   OK

   The connectors are properly connected.

   HINT: 

   If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

4. Disconnect the connectors from the airbag ECU assembly and combination meter assembly.
5. Check that the terminals of connectors are not damaged.

   OK

   The connectors are not deformed or damaged.

NG → REPLACE INSTRUMENT PANEL WIRE 

OK: Go to next step 

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D27-15 (PBE) - D7-38 (PBKL)	Always	Below 1 Ω

   TEXT IN ILLUSTRATION
   
   

   *1	Combination Meter Assembly
   *2	Airbag ECU Assembly
   *3	Instrument Panel Wire
   *a	Front view of wire harness connector (to Airbag ECU Assembly)
   *b	Front view of wire harness connector (to Combination Meter Assembly)

NG → REPLACE INSTRUMENT PANEL WIRE 

OK: Go to next step 

1. Connect the cable to the negative (-) battery terminal.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Turn the ignition switch to ON.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   D27-15 (PBE) - Body ground	Ignition switch ON	Below 1 V

4. Turn the ignition switch off.
5. Disconnect the cable from the negative (-) battery terminal.
   WARNING:

   Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

   TEXT IN ILLUSTRATION
   
   

   *1	Combination Meter Assembly
   *2	Airbag ECU Assembly
   *3	Instrument Panel Wire
   *a	Front view of wire harness connector (to Airbag ECU Assembly)

NG → REPLACE INSTRUMENT PANEL WIRE 

OK: Go to next step 

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D27-15 (PBE) - Body ground	Always	1 MΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Combination Meter Assembly
   *2	Airbag ECU Assembly
   *3	Instrument Panel Wire
   *a	Front view of wire harness connector (to Airbag ECU Assembly)

NG → REPLACE INSTRUMENT PANEL WIRE 

OK: Go to next step 

1. Connect the connectors to the combination meter assembly.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Connect the cable to the negative (-) battery terminal.
3. Check the passenger seat belt warning light operation after the ignition switch is turned to ON.

   OK

   Blinks for 6 seconds and then goes off

   TEXT IN ILLUSTRATION
   
   

   *1	Combination Meter Assembly
   *2	Airbag ECU Assembly

NG → See step   7 

OK: Go to next step 

1. Turn the ignition switch off.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the cable from the negative (-) battery terminal.
   WARNING:

   Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

3. Connect the connector to the airbag ECU assembly.
4. Connect the cable to the negative (-) battery terminal.
5. Clear the DTCs stored in memory. Refer to DTC CHECK / CLEAR [07/2013 - ] .
6. Turn the ignition switch off.
7. Turn the ignition switch to ON, and wait for at least 60 seconds.
8. Check for DTCs. Refer to DTC CHECK / CLEAR [07/2013 - ] .

   OK

   DTC B16F1 is not output.

   HINT: 

   Codes other than DTC B16F1 may be output at this time, but they are not related to this check.

   TEXT IN ILLUSTRATION
   
   

   *1	Combination Meter Assembly
   *2	Airbag ECU Assembly

NG → See step   9 

OK → See step   8