Part 1

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

DESCRIPTION

The passenger airbag ON/OFF indicator circuit consists of the center airbag sensor assembly and passenger airbag ON/OFF indicator.

The passenger airbag ON/OFF indicator indicates the operation condition of the front passenger airbag, front passenger side knee airbag.

DTC B1660/43 is recorded when a malfunction is detected in the passenger airbag ON/OFF indicator circuit.

* *1: w/ Navigation System

* *2: w/o Navigation System

WIRING DIAGRAM

INSPECTION PROCEDURE

PROCEDURE

1. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION

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

(b) Check the passenger airbag ON/OFF indicator operation.

HINT
Refer to the normal condition of the passenger airbag ON/OFF indicator Diagnosis System.

Result:

B -- CHECK CONNECTORS
A -- Continue to next step.

2. CHECK CONNECTORS

(a) Turn the engine 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.

3. CHECK PASSENGER AIRBAG ON/OFF INDICATOR

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

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

*1: w/ Navigation System

*2: w/o Navigation System

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

(d) Turn the engine switch on (IG).

(e) Check the passenger airbag ON/OFF indicator operation.

OK:

The passenger airbag ON/OFF indicator does not come on.

NG -- CHECK PASSENGER AIRBAG ON/OFF INDICATOR CIRCUIT (OPEN)
OK -- Continue to next step.

4. CHECK CENTER AIRBAG SENSOR ASSEMBLY

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

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

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

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

(e) Turn the engine switch off.

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

(g) 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

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

(a) Turn the engine 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 connector from the radio receiver assembly*1 or accessory meter assembly*2.

*1: w/ Navigation System

*2: w/o Navigation System

(d) 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

(e) w/ Navigation System:

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

Standard Resistance:

Text in Illustration

(f) 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.

6. 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.

7. 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.

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

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

(b) Turn the engine 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 -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY Removal

9. CHECK CONNECTORS

(a) Turn the engine 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.