RM3660EC _58 Vehicle Interior _080741 SUPPLEMENTAL RESTRAINT SYSTEMS _0610731 AIRBAG SYSTEM(for NR Series Engine) C

SUPPLEMENTAL RESTRAINT SYSTEMS  AIRBAG SYSTEM(for NR Series Engine)  B1805  Short in P Squib Circuit  B1806  Open in P Squib Circuit  B1807  Short in P Squib Circuit (to Ground)  B1808  Short in P Squib Circuit (to +B)  


DESCRIPTION

The front passenger squib circuit consists of the airbag sensor with ECU assembly and instrument panel passenger airbag assembly.

The airbag sensor with ECU assembly uses this circuit to deploy the airbag when deployment conditions are met.

These DTCs are stored when a malfunction is detected in the front passenger squib circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1805 Short in P Squib Circuit
·

The airbag sensor with ECU assembly detects a line short in the front passenger squib circuit during the primary check.

·

Front passenger squib malfunction

·

Airbag sensor with ECU assembly malfunction


·

Instrument panel wire

·

No. 2 instrument panel wire

·

Front passenger squib (Instrument panel passenger airbag assembly)

·

Airbag sensor with ECU assembly


Comes on Applies to check mode
B1806 Open in P Squib Circuit
·

The airbag sensor with ECU assembly detects an open in the front passenger squib circuit.

·

Front passenger squib malfunction

·

Airbag sensor with ECU assembly malfunction


·

Instrument panel wire

·

No. 2 instrument panel wire

·

Front passenger squib (Instrument panel passenger airbag assembly)

·

Airbag sensor with ECU assembly


Comes on Applies to check mode
B1807 Short in P Squib Circuit (to Ground)
·

The airbag sensor with ECU assembly detects a short to ground in the front passenger squib circuit.

·

Front passenger squib malfunction

·

Airbag sensor with ECU assembly malfunction


·

Instrument panel wire

·

No. 2 instrument panel wire

·

Front passenger squib (Instrument panel passenger airbag assembly)

·

Airbag sensor with ECU assembly


Comes on Applies to check mode
B1808 Short in P Squib Circuit (to +B)
·

The airbag sensor with ECU assembly detects a short to B+ in the front passenger squib circuit.

·

Front passenger squib malfunction

·

Airbag sensor with ECU assembly malfunction


·

Instrument panel wire

·

No. 2 instrument panel wire

·

Front passenger squib (Instrument panel passenger airbag assembly)

·

Airbag sensor with ECU assembly


Comes on Applies to check mode

WIRING DIAGRAM

B617298E01
4.885,3.094 7.083,3.49 2.198,0.396 10 false Airbag Sensor with ECU Assembly 4.885,2.917 6.271,3.385 1.385,0.469 10 false I47 4.958,1.344 6.344,1.813 1.385,0.469 10 false P+ 4.958,1.896 6.344,2.365 1.385,0.469 10 false P- 4.781,1.344 6.167,1.813 1.385,0.469 10 false 4 4.781,1.896 6.167,2.365 1.385,0.469 10 false 3 3.5,1.438 4.885,1.906 1.385,0.469 10 false Ig2 3.531,1.24 4.125,1.604 0.594,0.365 10 false 3 3.531,1.802 4.125,2.167 0.594,0.365 10 false 4 1.792,1.344 3.177,1.813 1.385,0.469 10 false P+ 2.083,1.333 2.677,1.698 0.594,0.365 10 false 2 1.802,1.896 3.188,2.365 1.385,0.469 10 false P- 2.083,1.896 2.677,2.26 0.594,0.365 10 false 1 0.875,2.396 2.26,2.865 1.385,0.469 10 false g1 0.875,2.573 3.198,3.021 2.323,0.448 10 false Front Passenger Squib (Instrument Panel Passenger Airbag Assembly) 3.5,1.99 4.885,2.458 1.385,0.469 10 false Ig2

CAUTION / NOTICE / HINT

NOTICE:
·

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) battery terminal.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>BEFORE DISCONNECTING BATTERY

HINT:

When disconnecting and reconnecting the battery, there is an automatic learning function that completes learning when the respective system is used.

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>AUTOMATIC LEARNING CHART




HINT:
·

Perform the simulation method by selecting check mode (Signal Check) using the GTS.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for NR Series Engine)>CHECK MODE PROCEDURE

·

After selecting check mode (Signal Check), perform the simulation method by wiggling each connector of the airbag system or driving the vehicle on a city road or rough road.

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING



PROCEDURE

1.CHECK CONNECTORS
a.
C238337C01
0.281,1.115 0.281,1.542 false 1.76,1.115 1.76,1.542 false 0.979,0.979 0.979,0.604 0.979,0.604 0.823,0.604 false 0.219,1.563 0.563,1.781 0.344,0.219 10 *1 0.646,0.521 1.021,0.771 0.375,0.25 10 *3 2.708,0.958 3.042,1.302 0.333,0.344 10 *2 2.26,0.958 2.573,1.323 0.313,0.365 10 A 1.948,0.958 2.198,1.448 0.25,0.49 10 B 1.479,0.969 1.688,1.188 0.208,0.219 10 C 1.167,0.969 1.469,1.229 0.302,0.26 10 D 0.698,0.969 0.896,1.177 0.198,0.208 10 E 0.396,0.969 0.677,1.198 0.281,0.229 10 F 1.698,1.563 2.031,1.844 0.333,0.281 10 *4
*1 Instrument Panel Passenger Airbag Assembly
*2 Airbag Sensor with ECU Assembly
*3 No. 2 Instrument Panel Wire
*4 Instrument Panel Wire


Turn the ignition switch off.


b.

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

CAUTION:

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 instrument panel passenger airbag assembly and airbag sensor with ECU assembly. Also check that the connectors that link the instrument panel wire and No. 2 instrument panel wire are properly connected.

OK:

The connectors are properly connected.


HINT:

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



d.

Disconnect the connectors from the instrument panel passenger airbag assembly and airbag sensor with ECU assembly. Also disconnect the instrument panel wire from the No. 2 instrument panel wire.


e.

Check that the terminals of the connectors are not deformed or damaged.

OK:

The terminals are not deformed or damaged.



f.

Check that the No. 2 instrument panel wire connector (on the instrument panel passenger airbag assembly side) is not loose, deformed or damaged.

OK:

The airbag connector locking button is not disengaged, and the claw of the lock is not deformed or damaged.



g.

Check that the short springs of the activation prevention mechanisms of the instrument panel wire connector and No. 2 instrument panel wire connector are not deformed or damaged.

OK:

The short springs are not deformed or damaged.



Result:
Proceed to
OK
NG



OK

2.CHECK INSTRUMENT PANEL PASSENGER AIRBAG ASSEMBLY

NG

REPLACE WIRE HARNESS

2.CHECK INSTRUMENT PANEL PASSENGER AIRBAG ASSEMBLY
a.
C238338C43
0.396,2.333 0.729,2.552 0.333,0.219 0.385,0.844 0.385,1.104 false 1.75,2.281 2.031,2.281 false 1.5,2.708 1.781,2.708 false 0.323,1.104 0.74,1.375 0.417,0.271 10 false *1 1.813,2.635 2.125,2.927 0.313,0.292 10 false *b 0.344,1.688 0.635,2.073 0.292,0.385 10 false *a 2.073,2.198 2.479,2.531 0.406,0.333 10 false SST 2.594,0.677 2.917,1.01 0.323,0.333 10 false *2 2.177,0.677 2.479,1.031 0.302,0.354 10 false A 2.021,0.677 2.26,1.052 0.24,0.375 10 false B 1.531,0.688 1.875,0.938 0.344,0.25 10 false C 1.375,0.688 1.958,1.063 0.583,0.375 10 false D 0.896,0.688 1.438,1 0.542,0.313 10 false E 0.5,0.688 0.969,0.99 0.469,0.302 10 false F 0.5,2.354 0.854,2.729 0.354,0.375 10 false g1
*1 Instrument Panel Passenger Airbag Assembly
*2 Airbag Sensor with ECU Assembly
*a Front view of wire harness connector
(to Instrument Panel Passenger Airbag Assembly)
*b Color: Orange


Connect the instrument panel wire to the No. 2 instrument panel wire and airbag sensor with ECU assembly.


b.

Connect SST (resistance 2.1 Ω) to connector E (orange connector).

CAUTION:

Never connect a tester to the instrument panel passenger airbag assembly for measurement, as this may lead to a serious injury due to airbag deployment.


NOTICE:
·

Do not forcibly insert SST into the terminals of the connector when connecting it.

·

Insert SST straight into the terminals of the connector.




SST
09843-18061  

c.

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


d.

Turn the ignition switch to ON, and wait for at least 60 seconds.


e.

Clear the DTCs stored in memory.

Body Electrical > SRS Airbag > Clear DTCs
50002 188

f.

Turn the ignition switch off.


g.

Turn the ignition switch to ON, and wait for at least 60 seconds.


h.

Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes
50001 188
OK:

DTC B1805, B1806, B1807 or B1808 is not output.


HINT:

Codes other than DTCs B1805, B1806, B1807 and B1808 may be output at this time, but they are not related to this check.



i.

Turn the ignition switch off.


j.

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

CAUTION:

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



k.

Disconnect SST from connector E.


Result:
Proceed to
OK
NG



OK

REPLACE INSTRUMENT PANEL PASSENGER AIRBAG ASSEMBLY

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>FRONT PASSENGER AIRBAG ASSEMBLY>REMOVAL


NG

3.CHECK FRONT PASSENGER SQUIB CIRCUIT
3.CHECK FRONT PASSENGER SQUIB CIRCUIT
a.
C238339C39
0.542,2.302 0.896,2.542 0.354,0.24 0.26,0.833 0.26,1.115 false 1.51,2.5 1.844,2.5 false 1.219,2.115 0.917,1.906 true 1.708,1.906 1.406,2.115 true 0.385,0.698 0.844,1.094 0.458,0.396 10 false F 0.802,0.688 1.344,1.198 0.542,0.51 10 false E 1.24,0.688 1.563,1.094 0.323,0.406 10 false D 1.396,0.688 1.792,1.313 0.396,0.625 10 false C 1.833,0.688 2.083,1.208 0.25,0.521 10 false B 2.26,0.677 2.625,1.167 0.365,0.49 10 false A 0.188,1.146 0.5,1.406 0.313,0.26 10 false *1 2.688,0.677 3.021,1 0.333,0.323 10 false *2 0.323,1.688 0.719,1.979 0.396,0.292 10 false *a 1.75,1.833 2.115,2.167 0.365,0.333 10 false P+ 0.719,1.833 1.313,2.115 0.594,0.281 10 false P- 0.656,2.333 1.188,2.719 0.531,0.385 10 false g1 1.875,2.417 2.219,2.729 0.344,0.313 10 false *b
*1 Instrument Panel Passenger Airbag Assembly
*2 Airbag Sensor with ECU Assembly
*a Front view of wire harness connector
(to Instrument Panel Passenger Airbag Assembly)
*b Color: Orange


Disconnect the instrument panel wire from the airbag sensor with ECU assembly.


b.

Check for a short to B+ in the circuit.

i.

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


ii.

Turn the ignition switch to ON.


iii.

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

Standard Voltage:
Tester Connection Condition Specified Condition
g1-2 (P+) - Body ground Ignition switch ON Below 1 V
g1-1 (P-) - Body ground Ignition switch ON Below 1 V



iv.

Turn the ignition switch off.


v.

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

CAUTION:

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




c.

Check for an open in the circuit.

i.

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

Standard Resistance:
Tester Connection Condition Specified Condition
g1-2 (P+) - g1-1 (P-) Always Below 1 Ω




d.

Check for a short to ground in the circuit.

i.

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

Standard Resistance:
Tester Connection Condition Specified Condition
g1-2 (P+) - Body ground Always 1 MΩ or higher
g1-1 (P-) - Body ground Always 1 MΩ or higher




e.

Check for a short in the circuit.

i.

Release the activation prevention mechanism built into connector B.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for NR Series Engine)>SYSTEM DESCRIPTION


ii.

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

Standard Resistance:
Tester Connection Condition Specified Condition
g1-2 (P+) - g1-1 (P-) Always 1 MΩ or higher



iii.

Restore the released activation prevention mechanism of connector B to the original condition.



Result:
Proceed to
OK
NG



OK

4.CHECK DTC

NG

5.CHECK INSTRUMENT PANEL WIRE
4.CHECK DTC
a.
C238340C07
0.448,1.115 0.448,1.406 false 0.573,0.969 1.698,1.51 1.125,0.542 10 false F 0.719,0.969 1.323,1.552 0.604,0.583 10 false E 1.24,0.969 2.115,1.438 0.875,0.469 10 false D 1.396,0.969 1.896,1.458 0.5,0.49 10 false C 1.917,0.969 2.438,1.427 0.521,0.458 10 false B 2.073,0.969 2.458,1.344 0.385,0.375 10 false A 0.385,1.427 0.948,1.854 0.563,0.427 10 false *1 2.49,0.979 2.823,1.385 0.333,0.406 10 false *2
*1 Instrument Panel Passenger Airbag Assembly
*2 Airbag Sensor with ECU Assembly


Connect the connectors to the instrument panel passenger airbag assembly and airbag sensor with ECU assembly.


b.

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


c.

Turn the ignition switch to ON, and wait for at least 60 seconds.


d.

Clear the DTCs stored in memory.

Body Electrical > SRS Airbag > Clear DTCs
50002 188

e.

Turn the ignition switch off.


f.

Turn the ignition switch to ON, and wait for at least 60 seconds.


g.

Check for DTCs.

Body Electrical > SRS Airbag > Trouble Codes
50001 188
OK:

DTC B1805, B1806, B1807 or B1808 is not output.


HINT:

Codes other than DTCs B1805, B1806, B1807 and B1808 may be output at this time, but they are not related to this check.



Result:
Proceed to
OK
NG



OK

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


NG

REPLACE AIRBAG SENSOR WITH ECU ASSEMBLY

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>CENTER AIRBAG SENSOR ASSEMBLY>REMOVAL


5.CHECK INSTRUMENT PANEL WIRE
a.
B518813C09
0.708,2.323 1.063,2.552 0.354,0.229 0.26,0.833 0.26,1.115 false 0.99,0.802 0.99,1.083 false 1.625,2.417 1.458,2.854 true 1.802,2.406 1.948,2.865 true 1.823,0.74 1.823,0.344 1.823,0.344 1.594,0.344 false 0.385,0.688 0.667,1.198 0.281,0.51 10 false F 0.708,0.698 0.979,1 0.271,0.302 10 false E 1.219,0.688 1.5,1.063 0.281,0.375 10 false D 1.542,0.688 1.792,1.125 0.25,0.438 10 false C 2.052,0.677 2.344,1.167 0.292,0.49 10 false B 2.385,0.677 2.708,1.25 0.323,0.573 10 false A 0.188,1.125 0.604,1.458 0.417,0.333 10 false *1 2.75,0.688 3.125,1.198 0.375,0.51 10 false *2 0.656,1.792 1.052,2.031 0.396,0.24 10 false *a 1.885,2.875 2.135,3.073 0.25,0.198 10 false P- 0.917,1.094 1.219,1.427 0.302,0.333 10 false *3 0.813,2.354 1.167,2.708 0.354,0.354 10 false Ig2 1.448,0.271 1.854,0.698 0.406,0.427 10 false *4 1.354,2.865 1.604,3.063 0.25,0.198 10 false P+
*1 Instrument Panel Passenger Airbag Assembly
*2 Airbag Sensor with ECU Assembly
*3 No. 2 Instrument Panel Wire
*4 Instrument Panel Wire
*a Front view of wire harness connector
(to No. 2 Instrument Panel Wire)


Disconnect the No. 2 instrument panel wire from the instrument panel wire.


b.

Check for a short to B+ in the circuit.

i.

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


ii.

Turn the ignition switch to ON.


iii.

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

Standard Voltage:
Tester Connection Condition Specified Condition
Ig2-3 (P+) - Body ground Ignition switch ON Below 1 V
Ig2-4 (P-) - Body ground Ignition switch ON Below 1 V



iv.

Turn the ignition switch off.


v.

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

CAUTION:

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




c.

Check for an open in the circuit.

i.

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

Standard Resistance:
Tester Connection Condition Specified Condition
Ig2-3 (P+) - Ig2-4 (P-) Always Below 1 Ω




d.

Check for a short to ground in the circuit.

i.

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

Standard Resistance:
Tester Connection Condition Specified Condition
Ig2-3 (P+) - Body ground Always 1 MΩ or higher
Ig2-4 (P-) - Body ground Always 1 MΩ or higher




e.

Check for a short in the circuit.

i.

Release the activation prevention mechanism built into connector B.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for NR Series Engine)>SYSTEM DESCRIPTION


ii.

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

Standard Resistance:
Tester Connection Condition Specified Condition
Ig2-3 (P+) - Ig2-4 (P-) Always 1 MΩ or higher



iii.

Restore the released activation prevention mechanism of connector B to the original condition.



Result:
Proceed to
OK
NG



OK

6.CHECK NO. 2 INSTRUMENT PANEL WIRE

NG

REPLACE INSTRUMENT PANEL WIRE

6.CHECK NO. 2 INSTRUMENT PANEL WIRE
a.
C238342C33
0.594,2.5 0.917,2.719 0.323,0.219 0.25,0.958 0.25,1.24 false 1.75,0.958 1.75,1.24 false 1.281,2.208 0.927,2.073 true 1.792,2.083 1.479,2.219 true 0.958,0.823 0.958,0.51 0.958,0.51 1.115,0.51 false 1.583,2.677 1.885,2.677 false 0.365,0.813 0.667,1.323 0.302,0.51 10 false F 0.635,0.813 1.052,1.208 0.417,0.396 10 false E 1.167,0.813 1.448,1.188 0.281,0.375 10 false D 1.438,0.813 1.635,1.146 0.198,0.333 10 false C 1.979,0.813 2.281,1.438 0.302,0.625 10 false B 2.25,0.813 2.615,1.229 0.365,0.417 10 false A 0.177,1.26 0.438,1.531 0.26,0.271 10 false *1 2.688,0.813 3.052,1.198 0.365,0.385 10 false *2 0.323,1.875 0.646,2.24 0.323,0.365 10 false *a 1.833,2 2.177,2.333 0.344,0.333 10 false P+ 1.688,1.25 2.104,1.594 0.417,0.344 10 false *4 0.729,2 1.115,2.313 0.385,0.313 10 false P- 0.698,2.51 1.063,2.844 0.365,0.333 10 false g1 1.146,0.427 1.521,0.729 0.375,0.302 10 false *3 1.927,2.594 2.26,2.833 0.333,0.24 10 false *b
*1 Instrument Panel Passenger Airbag Assembly
*2 Airbag Sensor with ECU Assembly
*3 No. 2 Instrument Panel Wire
*4 Instrument Panel Wire
*a Front view of wire harness connector
(to Instrument Panel Passenger Airbag Assembly)
*b Color: Orange


Check for a short to B+ in the circuit.

i.

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


ii.

Turn the ignition switch to ON.


iii.

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

Standard Voltage:
Tester Connection Condition Specified Condition
g1-2 (P+) - Body ground Ignition switch ON Below 1 V
g1-1 (P-) - Body ground Ignition switch ON Below 1 V



iv.

Turn the ignition switch off.


v.

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

CAUTION:

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




b.

Check for an open in the circuit.

i.

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

Standard Resistance:
Tester Connection Condition Specified Condition
g1-2 (P+) - g1-1 (P-) Always Below 1 Ω




c.

Check for a short to ground in the circuit.

i.

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

Standard Resistance:
Tester Connection Condition Specified Condition
g1-2 (P+) - Body ground Always 1 MΩ or higher
g1-1 (P-) - Body ground Always 1 MΩ or higher




d.

Check for a short in the circuit.

i.

Release the activation prevention mechanism built into connector D.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for NR Series Engine)>SYSTEM DESCRIPTION


ii.

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

Standard Resistance:
Tester Connection Condition Specified Condition
g1-2 (P+) - g1-1 (P-) Always 1 MΩ or higher



iii.

Restore the released activation prevention mechanism of connector D to the original condition.



Result:
Proceed to
OK
NG



OK

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


NG

REPLACE NO. 2 INSTRUMENT PANEL WIRE