Part 2

SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B1660/43: Passenger Airbag ON/OFF Indicator Circuit Malfunction
B1660/43 - Passenger Airbag ON/OFF Indicator Circuit Malfunction

9. CHECK CONNECTORS

(a) Turn the power switch off.

(b) Disconnect the cable from the negative (-) battery terminal.

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

(c) Check that the connectors are properly connected to the center airbag sensor assembly and radio receiver assembly*1 or accessory meter assembly*2. Also check that the connectors that link the instrument panel wire and No. 2 instrument panel wire are properly connected.

*1: w/ Navigation System

*2: w/o Navigation System

OK:

The connectors are properly connected.

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

(d) Disconnect the connectors from the center airbag sensor assembly and radio receiver assembly*1 or accessory meter assembly*2. Also disconnect the connectors that link the instrument panel wire and No. 2 instrument panel wire.

*1: w/ Navigation System

*2: w/o Navigation System

(e) Check that the terminals of connectors are not damaged.

OK:

The terminals are not deformed or damaged.

NG -- REPLACE WIRE HARNESS
OK -- Continue to next step.

10. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (OPEN)

(a) Connect the connectors that link the instrument panel wire and No. 2 instrument panel wire.

(b) Using SST, connect terminals 23 (PAON) and 17 (P-AB) of connector B.

NOTICE:
Do not forcibly insert SST into the terminals of the connector when connecting the wire.

SST : 09843-18040

(c) w/ Navigation System:

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

Standard Resistance:

Text in Illustration

(d) w/o Navigation System:

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

Standard Resistance:

Text in Illustration

NG -- CHECK INSTRUMENT PANEL WIRE (OPEN)
OK -- Continue to next step.

11. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT)

(a) Disconnect SST from connector B.

(b) w/ Navigation System:

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

Standard Resistance:

Text in Illustration

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

Standard Resistance:

Text in Illustration

NG -- CHECK INSTRUMENT PANEL WIRE (SHORT)
OK -- Continue to next step.

12. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT TO GROUND)

(a) w/ Navigation System:

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

Standard Resistance:

Text in Illustration

(b) w/o Navigation System:

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

Standard Resistance:

Text in Illustration

NG -- CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND)
OK -- Continue to next step.

13. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (SHORT TO B+)

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

(b) Turn the power switch on (IG).

(c) w/ Navigation System:

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

Standard Voltage:

Text in Illustration

(d) w/o Navigation System:

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

Standard Voltage:

Text in Illustration

NG -- CHECK INSTRUMENT PANEL WIRE (SHORT TO B+)
OK -- Continue to next step.

14. CHECK PASSENGER AIRBAG ON / OFF INDICATOR (SOURCE VOLTAGE)

(a) Turn the power switch on (IG).

(b) w/ Navigation System:

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

Standard Voltage:

Result:

Text in Illustration

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

Standard Voltage:

Result:

Text in Illustration

C -- REPLACE WIRE HARNESS (ACCESSORY METER ASSEMBLY - BATTERY) OR BATTERY

B -- REPLACE WIRE HARNESS (RADIO RECEIVER ASSEMBLY - BATTERY) OR BATTERY
A -- Continue to next step.

15. CHECK PASSENGER AIRBAG ON/OFF INDICATOR

(a) Turn the power switch off.

(b) Disconnect the cable from the negative (-) battery terminal.

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

(c) Connect the connector to the radio receiver assembly*1 or accessory meter assembly*2.

*1: w/ Navigation System

*2: w/o Navigation System

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

(e) Turn the power switch on (IG).

(f) Check the indicator according to the conditions in the table below.

Result:

Result:

Text in Illustration

C -- REPLACE ACCESSORY METER ASSEMBLY Removal

B -- REPLACE RADIO RECEIVER ASSEMBLY Removal
A -- Continue to next step.

16. CHECK CENTER AIRBAG SENSOR ASSEMBLY

(a) Turn the power switch off.

(b) Disconnect the cable from the negative (-) battery terminal.

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

(c) Connect the connector to the center airbag sensor assembly.

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

(e) Turn the power switch on (IG), and wait for at least 60 seconds.

(f) Clear the DTCs stored in the memory DTC Check / Clear.

(g) Turn the power switch off.

(h) Turn the power switch on (IG), and wait for at least 60 seconds.

(i) Check for DTCs DTC Check / Clear.

OK:

DTC B1660/43 is not output.

Text in Illustration

*1: w/ Navigation System

*2: w/o Navigation System

HINT
Codes other than DTC B1660/43 may be output at this time, but they are not related to this check.

NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

17. CHECK INSTRUMENT PANEL WIRE (OPEN)

(a) Disconnect the instrument panel wire from the No. 2 instrument panel wire.

HINT
SST has already been inserted into connector B.

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

Standard Resistance:

Text in Illustration

*1: w/ Navigation System

*2: w/o Navigation System

NG -- REPLACE INSTRUMENT PANEL WIRE

OK -- REPLACE NO. 2 INSTRUMENT PANEL WIRE

18. CHECK INSTRUMENT PANEL WIRE (SHORT)

(a) Disconnect the instrument panel wire from the No. 2 instrument panel wire.

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

Standard Resistance:

Text in Illustration

*1: w/ Navigation System

*2: w/o Navigation System

NG -- REPLACE INSTRUMENT PANEL WIRE

OK -- REPLACE NO. 2 INSTRUMENT PANEL WIRE

19. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND)

(a) Disconnect the instrument panel wire from the No. 2 instrument panel wire.

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

Standard Resistance:

Text in Illustration

*1: w/ Navigation System

*2: w/o Navigation System

NG -- REPLACE INSTRUMENT PANEL WIRE

OK -- REPLACE NO. 2 INSTRUMENT PANEL WIRE

20. CHECK INSTRUMENT PANEL WIRE (SHORT TO B+)

(a) Turn the power switch off.

(b) Disconnect the cable from the negative (-) battery terminal.

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

(c) Disconnect the instrument panel wire from the No. 2 instrument panel wire.

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

(e) Turn the power switch on (IG).

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

Standard Voltage:

Text in Illustration

*1: w/ Navigation System

*2: w/o Navigation System

NG -- REPLACE INSTRUMENT PANEL WIRE

OK -- REPLACE NO. 2 INSTRUMENT PANEL WIRE