SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (w/o Occupant Classification System): B1805-B1808; Short in P Squib Circuit; 2019 - 2020 MY RAV4 RAV4 HV [11/2018

Last Modified: 01-30-2024	6.11:8.1.0	Doc ID: RM100000001FQRW
Model Year Start: 2019	Model: RAV4	Prod Date Range: [11/2018 - 08/2020]
Title: SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (w/o Occupant Classification System): B1805-B1808; Short in P Squib Circuit; 2019 - 2020 MY RAV4 RAV4 HV [11/2018 - 08/2020]

DTC

B1805

Short in P Squib Circuit

DTC

B1806

Open in P Squib Circuit

DTC

B1807

Short in P Squib Circuit (to Ground)

DTC

B1808

Short in P Squib Circuit (to +B)

DESCRIPTION

The front passenger side squib circuit consists of the airbag ECU 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 ECU 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 ECU assembly malfunction.	Instrument panel wire No. 2 instrument panel wire Instrument panel passenger without door airbag assembly Airbag ECU assembly	Comes on	Applicable
B1806	Open in P Squib Circuit	One of the following conditions is met: The airbag ECU 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 ECU assembly malfunction.	Instrument panel wire No. 2 instrument panel wire Instrument panel passenger without door airbag assembly Airbag ECU assembly	Comes on	Applicable
B1807	Short in P Squib Circuit (to Ground)	One of the following conditions is met: The airbag ECU 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 ECU assembly malfunction.	Instrument panel wire No. 2 instrument panel wire Instrument panel passenger without door airbag assembly Airbag ECU assembly	Comes on	Applicable
B1808	Short in P Squib Circuit (to +B)	One of the following conditions is met: The airbag ECU 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 ECU assembly malfunction.	Instrument panel wire No. 2 instrument panel wire Instrument panel passenger without door airbag assembly Airbag ECU assembly	Comes on	Applicable

WIRING DIAGRAM

for HV Model:

for Gasoline Model:

CAUTION / NOTICE / HINT

NOTICE:

After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal.
Click here
When disconnecting the cable from the negative (-) auxiliary battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected.
Click here
After replacing the airbag ECU assembly, refer to initialization.
Click here

HINT:

To perform the simulation method, enter check mode (signal check) with the Techstream (Click here ), and then wiggle each connector of the airbag system or drive the vehicle on various types of road (Click here ).

PROCEDURE

1.	CHECK CONNECTORS

(a) Turn the ignition switch off.

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

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

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

(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.

REPLACE INSTRUMENT PANEL WIRE OR NO. 2 INSTRUMENT PANEL WIRE

2.	CHECK INSTRUMENT PANEL PASSENGER WITHOUT DOOR AIRBAG ASSEMBLY

(a) Connect the instrument panel wire to the No. 2 instrument panel wire and airbag ECU assembly.

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

(b) 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

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

(e) Clear the DTCs stored in memory.

Click here

Body Electrical > SRS Airbag > Clear DTCs

(f) Turn the ignition switch off.

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

(h) Check for DTCs.

Click here

Body Electrical > SRS Airbag > Trouble Codes

HINT:

Codes other than DTC 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 (-) auxiliary battery terminal, and wait for at least 90 seconds.

(k) Disconnect SST from connector E.

DTCs B1805, B1806, B1807 and B1808 are not output

REPLACE INSTRUMENT PANEL PASSENGER WITHOUT DOOR AIRBAG ASSEMBLY

DTC B1805, B1806, B1807 or B1808 is output

3.	CHECK FRONT PASSENGER SIDE SQUIB CIRCUIT

(a) Disconnect the instrument panel wire from the airbag ECU assembly.

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

(b) Check for a short to B+ in the circuit.

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

(2) Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection	Switch Condition	Specified Condition
G78-1 (P-) - Body ground	Ignition switch ON	Below 1 V
G78-2 (P+) - Body ground	Ignition switch ON	Below 1 V

(4) Turn the ignition switch off.

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

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
G78-1 (P-) - G78-2 (P+)	Always	Below 1 Ω

(d) Check for a short to ground in the circuit.

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
G78-1 (P-) - Body ground	Always	1 MΩ or higher
G78-2 (P+) - Body ground	Always	1 MΩ or higher

(e) Check for a short in the circuit.

(1) Release the activation prevention mechanism built into connector B.

Click here

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
G78-1 (P-) - G78-2 (P+)	Always	1 MΩ or higher

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

GO TO STEP 5

CHECK DTC

(a) Connect the connectors to the instrument panel passenger without door airbag assembly and airbag ECU assembly.

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

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

(d) Clear the DTCs stored in memory.

Click here

Body Electrical > SRS Airbag > Clear DTCs

(e) Turn the ignition switch off.

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

(g) Check for DTCs.

Click here

Body Electrical > SRS Airbag > Trouble Codes

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

DTC B1805, B1806, B1807 or B1808 is output

REPLACE AIRBAG ECU ASSEMBLY

5.	CHECK INSTRUMENT PANEL WIRE

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

for HV Model:

*1	Instrument Panel Passenger without Door Airbag Assembly
*2	Airbag 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)
	Release the activation prevention mechanism

for Gasoline Model:

*1	Instrument Panel Passenger without Door Airbag Assembly
*2	Airbag 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)
	Release the activation prevention mechanism

(b) Check for a short to B+ in the circuit.

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

(2) Turn the ignition switch to ON.

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

Standard Voltage:

for HV Model:

Tester Connection	Switch Condition	Specified Condition
GG1-1 (P+) - Body ground	Ignition switch ON	Below 1 V
GG1-2 (P-) - Body ground	Ignition switch ON	Below 1 V

for Gasoline Model:

Tester Connection	Switch Condition	Specified Condition
GG2-1 (P+) - Body ground	Ignition switch ON	Below 1 V
GG2-2 (P-) - Body ground	Ignition switch ON	Below 1 V

(4) Turn the ignition switch off.

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

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

Standard Resistance:

for HV Model:

Tester Connection	Condition	Specified Condition
GG1-1 (P+) - GG1-2 (P-)	Always	Below 1 Ω

for Gasoline Model:

Tester Connection	Condition	Specified Condition
GG2-1 (P+) - GG2-2 (P-)	Always	Below 1 Ω

(d) Check for a short to ground in the circuit.

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

Standard Resistance:

for HV Model:

Tester Connection	Condition	Specified Condition
GG1-1 (P+) - Body ground	Always	1 MΩ or higher
GG1-2 (P-) - Body ground	Always	1 MΩ or higher

for Gasoline Model:

Tester Connection	Condition	Specified Condition
GG2-1 (P+) - Body ground	Always	1 MΩ or higher
GG2-2 (P-) - Body ground	Always	1 MΩ or higher

(e) Check for a short in the circuit.

(1) Release the activation prevention mechanism built into connector B.

Click here

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

Standard Resistance:

for HV Model:

Tester Connection	Condition	Specified Condition
GG1-1 (P+) - GG1-2 (P-)	Always	1 MΩ or higher

for Gasoline Model:

Tester Connection	Condition	Specified Condition
GG2-1 (P+) - GG2-2 (P-)	Always	1 MΩ or higher

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

REPLACE NO. 2 INSTRUMENT PANEL WIRE

REPLACE INSTRUMENT PANEL WIRE