RM35X0E _58 Vehicle Interior _079257 SUPPLEMENTAL RESTRAINT SYSTEMS _0385034 AIRBAG SYSTEM(for Type B) C

SUPPLEMENTAL RESTRAINT SYSTEMS AIRBAG SYSTEM(for Type B) 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 side squib circuit consists of the airbag sensor assembly and instrument panel passenger without door airbag assembly.

The circuit instructs the SRS to deploy when deployment conditions are met.

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

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	Warning Indicate	Test Mode / Check Mode
B1805	Short in P Squib Circuit	One of the following conditions is met: · The airbag sensor assembly detects a line short circuit signal 5 times in the front passenger side squib circuit during the primary check. · A instrument panel passenger without door airbag assembly. · An airbag sensor assembly malfunction.	· Instrument panel wire · No. 2 instrument panel wire · Instrument panel passenger without door airbag assembly · Airbag sensor assembly	Comes on	Applicable
B1806	Open in P Squib Circuit	One of the following conditions is met: · The airbag sensor assembly detects an open circuit signal in the front passenger side squib circuit for 2 seconds. · A instrument panel passenger without door airbag assembly. · An airbag sensor assembly malfunction.	· Instrument panel wire · No. 2 instrument panel wire · Instrument panel passenger without door airbag assembly · Airbag sensor assembly	Comes on	Applicable
B1807	Short in P Squib Circuit (to Ground)	One of the following conditions is met: · The airbag sensor assembly detects a short circuit to ground signal in the front passenger side squib circuit for 0.5 seconds. · A instrument panel passenger without door airbag assembly. · An airbag sensor assembly malfunction.	· Instrument panel wire · No. 2 instrument panel wire · Instrument panel passenger without door airbag assembly · Airbag sensor assembly	Comes on	Applicable
B1808	Short in P Squib Circuit (to +B)	One of the following conditions is met: · The airbag sensor assembly detects a short circuit to B+ signal in the front passenger side squib circuit for 0.5 seconds. · A Instrument panel passenger without door airbag assembly. · An airbag sensor assembly malfunction.	· Instrument panel wire · No. 2 instrument panel wire · Instrument panel passenger without door airbag assembly · Airbag sensor assembly	Comes on	Applicable

WIRING DIAGRAM

5.396,0.323 5.5,0.469 0.104,0.146 10 false 4 5.604,0.406 5.875,0.594 0.271,0.188 10 false P+ 3.448,0.458 3.823,0.656 0.375,0.198 10 false NO3 3.552,0.271 3.813,0.458 0.26,0.188 10 false 4 3.458,1.24 3.875,1.458 0.417,0.219 10 false NO3 3.552,1.031 3.906,1.25 0.354,0.219 10 false 3 5.396,1.104 5.5,1.25 0.104,0.146 10 false 3 1.698,0.333 1.802,0.479 0.104,0.146 10 false 2 1.708,1.115 1.813,1.26 0.104,0.146 10 false 1 5.604,1.188 5.938,1.365 0.333,0.177 10 false P- 1.427,0.323 1.708,0.479 0.281,0.156 10 false P+ 1.427,1.104 1.719,1.26 0.292,0.156 10 false P- 3.51,0.667 3.802,0.844 0.292,0.177 10 false P+ 3.531,1.448 3.979,1.688 0.448,0.24 10 false P- 5.479,1.688 6.958,1.99 1.479,0.302 10 false N45 0.479,1.698 2.271,2.073 1.792,0.375 10 false O2 5.479,1.833 7.146,2.156 1.667,0.323 10 false Airbag Sensor Assembly 0.5,1.885 2.74,2.344 2.24,0.458 10 false Instrument Panel Passenger without Door Airbag Assembly

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 BATTERY201902,999999,_V1,_081196,_0393338,RM100000001HX6Q,

When disconnecting and reconnecting the battery

Click hereGeneral>SETUP>WHEN DISCONNECTING OR RECONNECTING BATTERY TERMINAL>WORK PROCEDURE201902,201906,_V1,_081196,_0393338,RM100000001HX6R,201906,999999,_V1,_081196,_0393338,RM100000001JBY9,

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 CHART201902,201906,_V1,_081196,_0393338,RM100000001HX6S,201906,999999,_V1,_081196,_0393338,RM100000001IWEY,

After replacing the airbag sensor assembly, refer to initialization.

Click hereGeneral>SETUP>WHEN REPLACING OR REMOVING/INSTALLING PARTS>WORK PROCEDURE201902,201906,_V1,_081196,_0393339,RM100000001HX6U,201906,202005,_V1,_081196,_0393339,RM100000001IWEZ,202005,202107,_V1,_081196,_0393339,RM100000001M43S,202107,202208,_V1,_081196,_0393339,RM100000001WMAF,202208,999999,_V1,_081196,_0393339,RM1000000024IQN,

HINT:: To perform the simulation method, enter check mode (signal check) with the GTS (Click here Vehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>DTC CHECK / CLEAR201902,999999,_58,_079257,_0385034,RM100000001GJPZ,), and then wiggle each connector of the airbag system or drive the vehicle on various types of road (Click here General>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING201902,999999,_V1,_078841,_0386803,RM100000001GTWY,).

PROCEDURE

1.CHECK CONNECTORS

0.469,0.885 0.781,1.042 0.313,0.156 10 false *1 2.344,1.646 2.656,1.802 0.313,0.156 10 false *2 0.938,0.844 1.25,1 0.313,0.156 10 false *3 1.49,0.844 1.802,1 0.313,0.156 10 false *4

*1	Instrument Panel Passenger without Door Airbag Assembly
*2	Airbag Sensor Assembly
*3	No. 2 Instrument Panel Wire
*4	Instrument Panel Wire

Turn the ignition switch off.

Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

Check that the connectors are properly connected to the instrument panel passenger without door airbag assembly and airbag sensor 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.

Disconnect the connectors from the instrument panel passenger without door airbag assembly and airbag sensor assembly. Also disconnect the instrument panel wire from the No. 2 instrument panel wire.

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

OK:: The terminals are not deformed or damaged.

Check that the No. 2 instrument panel wire connector (on the instrument panel passenger without door airbag assembly side) is not loose, deformed or damaged.

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

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

2.CHECK INSTRUMENT PANEL PASSENGER WITHOUT DOOR AIRBAG ASSEMBLY

REPLACE INSTRUMENT PANEL WIRE OR NO. 2 INSTRUMENT PANEL WIRE

2.CHECK INSTRUMENT PANEL PASSENGER WITHOUT DOOR AIRBAG ASSEMBLY

0.396,2.333 0.813,2.563 0.417,0.229 1.469,2.729 1.635,3.042 1.635,3.042 1.781,3.042 true 1.719,2.229 1.865,2.146 1.865,2.146 2,2.146 true 0.26,0.906 0.677,1.177 0.417,0.271 10 false *1 1.844,2.969 2.156,3.26 0.313,0.292 10 false *b 0.344,1.688 0.635,2.073 0.292,0.385 10 false *a 2.042,2.042 2.448,2.375 0.406,0.333 10 false *3 2.615,1.344 2.938,1.677 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 0.469,2.365 0.823,2.74 0.354,0.375 10 false O2

*1	Instrument Panel Passenger without Door Airbag Assembly
*2	Airbag Sensor Assembly
*3	SST
*a	Front view of wire harness connector (to Instrument Panel Passenger without Door Airbag Assembly)
*b	Color: Orange

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

Connect the white wire side of SST (resistance: 2.1 Ω) to connector E (orange connector).

CAUTION:: Never connect the tester to the instrument panel passenger without door 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 SST.

·

Insert SST straight into the terminals of the connector.

SST: 09843-18061

Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

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

Clear the DTCs stored in memory.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>DTC CHECK / CLEAR201902,999999,_58,_079257,_0385034,RM100000001GJPZ,

Body Electrical > SRS Airbag > Clear DTCs: 50002 188

Turn the ignition switch off.

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

Check for DTCs.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>DTC CHECK / CLEAR201902,999999,_58,_079257,_0385034,RM100000001GJPZ,

Body Electrical > SRS Airbag > Trouble Codes: 50001 188

Result:

Proceed to
DTCs B1805, B1806, B1807 and B1808 are not output
DTC B1805, B1806, B1807 or B1808 is output

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

Turn the ignition switch off.

Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

Disconnect SST from connector E.

DTCs B1805, B1806, B1807 and B1808 are not output

REPLACE INSTRUMENT PANEL PASSENGER WITHOUT DOOR AIRBAG ASSEMBLY

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>FRONT PASSENGER AIRBAG ASSEMBLY>REMOVAL201902,201906,_58,_079257,_0384938,RM100000001GJ8C,201906,999999,_58,_079257,_0384938,RM100000001IIB8,

DTC B1805, B1806, B1807 or B1808 is output

3.CHECK FRONT PASSENGER SIDE SQUIB CIRCUIT

0.229,2.438 0.646,2.667 0.417,0.229 1.146,2.573 1.417,2.833 1.417,2.833 1.583,2.833 true 1.063,2.073 1.344,1.865 1.344,1.865 1.51,1.865 true 0.927,2.073 0.656,1.865 0.656,1.865 0.49,1.865 true 0.354,1.063 0.771,1.333 0.417,0.271 10 false *1 1.688,2.792 2,3.083 0.313,0.292 10 false *b 0.292,1.615 0.583,2 0.292,0.385 10 false *a 2.542,1.438 2.865,1.771 0.323,0.333 10 false *2 2.146,0.833 2.448,1.188 0.302,0.354 10 false A 1.875,0.844 2.115,1.219 0.24,0.375 10 false B 1.417,0.844 1.76,1.094 0.344,0.25 10 false C 1.26,0.833 1.844,1.208 0.583,0.375 10 false D 0.802,0.844 1.344,1.156 0.542,0.313 10 false E 0.552,0.854 1.021,1.156 0.469,0.302 10 false F 0.333,2.458 0.688,2.833 0.354,0.375 10 false O2 1.573,1.792 1.885,1.99 0.313,0.198 10 false P+ 0.292,1.781 0.604,1.979 0.313,0.198 10 false P-

*1	Instrument Panel Passenger without Door Airbag Assembly
*2	Airbag Sensor Assembly
*a	Front view of wire harness connector (to Instrument Panel Passenger without Door Airbag Assembly)
*b	Color: Orange
	Release the activation prevention mechanism

Disconnect the instrument panel wire from the airbag sensor assembly.

Check for a short to B+ in the circuit.

Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

ii.

Turn the ignition switch to ON.

iii.

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
O2-1 (P-) - Body ground	Ignition switch ON	Below 1 V
O2-2 (P+) - Body ground	Ignition switch ON	Below 1 V

iv.

Turn the ignition switch off.

Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

Check for an open in the circuit.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
O2-1 (P-) - O2-2 (P+)	Always	Below 1 Ω

Check for a short to ground in the circuit.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
O2-1 (P-) - Body ground	Always	1 MΩ or higher
O2-2 (P+) - Body ground	Always	1 MΩ or higher

Check for a short in the circuit.

Release the activation prevention mechanism built into connector B.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>SYSTEM DESCRIPTION201902,999999,_58,_079257,_0385034,RM100000001GJPU,

ii.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
O2-1 (P-) - O2-2 (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

4.CHECK DTC

5.CHECK INSTRUMENT PANEL WIRE

4.CHECK DTC

0.333,1.177 0.896,1.604 0.563,0.427 10 false *1 2.49,1.604 2.823,2.01 0.333,0.406 10 false *2

*1	Instrument Panel Passenger without Door Airbag Assembly
*2	Airbag Sensor Assembly

Connect the connectors to the instrument panel passenger without door airbag assembly and airbag sensor assembly.

Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

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

Clear the DTCs stored in memory.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>DTC CHECK / CLEAR201902,999999,_58,_079257,_0385034,RM100000001GJPZ,

Body Electrical > SRS Airbag > Clear DTCs: 50002 188

Turn the ignition switch off.

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

Check for DTCs.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>DTC CHECK / CLEAR201902,999999,_58,_079257,_0385034,RM100000001GJPZ,

Body Electrical > SRS Airbag > Trouble Codes: 50001 188

Result:

Proceed to
DTCs B1805, B1806, B1807 and B1808 are not output
DTC B1805, B1806, B1807 or B1808 is output

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

DTCs B1805, B1806, B1807 and B1808 are not output

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING201902,999999,_V1,_078841,_0386803,RM100000001GTWY,

DTC B1805, B1806, B1807 or B1808 is output

REPLACE AIRBAG SENSOR ASSEMBLY

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>CENTER AIRBAG SENSOR ASSEMBLY>REMOVAL201902,201906,_58,_079257,_0384942,RM100000001GJ8V,201906,999999,_58,_079257,_0384942,RM100000001IN22,

5.CHECK INSTRUMENT PANEL WIRE

0.333,2.177 0.708,2.448 0.375,0.271 1.833,2.833 1.667,2.833 1.667,2.833 1.396,2.344 true 0.833,2.833 1,2.833 1,2.833 1.292,2.365 true 2.24,0.667 2.396,0.865 0.156,0.198 10 false A 1.969,0.656 2.125,0.854 0.156,0.198 10 false B 1.458,0.656 1.615,0.854 0.156,0.198 10 false C 1.188,0.656 1.344,0.854 0.156,0.198 10 false D 0.667,0.656 0.823,0.854 0.156,0.198 10 false E 0.406,0.656 0.563,0.854 0.156,0.198 10 false F 0.188,0.458 0.385,0.667 0.198,0.208 10 false *1 0.885,0.458 1.083,0.667 0.198,0.208 10 false *3 1.677,0.458 1.875,0.667 0.198,0.208 10 false *4 2.625,1.323 2.823,1.531 0.198,0.208 10 false *2 0.313,1.656 0.51,1.865 0.198,0.208 10 false *a 1.906,2.76 2.156,2.958 0.25,0.198 10 false P+ 0.646,2.75 0.896,2.948 0.25,0.198 10 false P- 0.375,2.25 0.75,2.458 0.375,0.208 10 false NO3

*1	Instrument Panel Passenger without Door Airbag Assembly
*2	Airbag Sensor Assembly
*3	No. 2 Instrument Panel Wire
*4	Instrument Panel Wire
*a	Front view of wire harness connector (to No. 2 Instrument Panel Wire)
	Release the activation prevention mechanism

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

Check for a short to B+ in the circuit.

Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

ii.

Turn the ignition switch to ON.

iii.

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
NO3-4 (P+) - Body ground	Ignition switch ON	Below 1 V
NO3-3 (P-) - Body ground	Ignition switch ON	Below 1 V

iv.

Turn the ignition switch off.

Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

Check for an open in the circuit.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
NO3-4 (P+) - NO3-3 (P-)	Always	Below 1 Ω

Check for a short to ground in the circuit.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
NO3-4 (P+) - Body ground	Always	1 MΩ or higher
NO3-3 (P-) - Body ground	Always	1 MΩ or higher

Check for a short in the circuit.

Release the activation prevention mechanism built into connector B.

Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM (for Type B)>SYSTEM DESCRIPTION201902,999999,_58,_079257,_0385034,RM100000001GJPU,

ii.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
NO3-4 (P+) - NO3-3 (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

REPLACE NO. 2 INSTRUMENT PANEL WIRE

REPLACE INSTRUMENT PANEL WIRE