Toyota Venza Quiz
Supplemental Restraint Systems

Passenger Airbag ON/OFF Indicator Circuit Malfunction (B1660/43)

In this manual: Supplemental Restraint Systems
Introduction — 15Maintenance — 8Audio / Video — 102Garage Door Opener — 8Navigation / Multi Info Display — 81Park Assist / Monitoring — 50Brake (front) — 7Brake (rear) — 7Brake Control / Dynamic Control Systems — 79Brake System (other) — 28Parking Brake — 22Axle And Differential — 44Drive Shaft / Propeller Shaft — 24Mf1a Transfer / 4wd / Awd — 46U660e Automatic Transmission / Transaxle — 1241ar-fe Cooling — 311ar-fe Emission Control — 101ar-fe Engine Control — 1331ar-fe Engine Mechanical — 441ar-fe Fuel — 311ar-fe Intake / Exhaust — 211ar-fe Lubrication — 111ar-fe Starting — 16Cruise Control — 241ar-fe Battery / Charging — 162gr-fe Battery / Charging — 17Networking — 67Power Distribution — 8Power Assist Systems — 34Steering Column — 37Steering Gear / Linkage — 29Alignment / Handling Diagnosis — 4Front Suspension — 39Rear Suspension — 35Tire / Wheel — 4Tire Pressure Monitoring — 35Door / Hatch — 83Exterior Panels / Trim — 56Horn — 4Lighting (ext) — 89Mirror (ext) — 36Sliding Roof / Convertible — 26Window / Glass — 87Wiper / Washer — 30Door Lock — 85Heating / Air Conditioning — 82Interior Panels / Trim — 20Lighting (int) — 37Meter / Gauge / Display — 41Mirror (int) — 9Power Outlets (int) — 10Seat — 84Seat Belt — 43Supplemental Restraint Systems — 131Theft Deterrent / Keyless Entry — 155
~13min read
1special tools
DESCRIPTION

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

The passenger airbag ON/OFF indicator indicates the operation condition of the front passenger airbag and front seat belt pretensioner RH.

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

DTC No.

DTC Detection Condition

Trouble Area

B1660/43
  • The center airbag sensor assembly receives a line short circuit signal, an open circuit signal, a short circuit to ground signal or a short circuit to B+ signal in the passenger airbag ON/OFF indicator circuit.
  • Accessory meter assembly malfunction
  • Center airbag sensor assembly malfunction
  • Instrument panel wire
  • No. 2 Instrument panel wire
  • No. 3 Instrument panel wire
  • Accessory meter assembly (Passenger airbag ON/OFF indicator)
  • Center airbag sensor assembly
WIRING DIAGRAM
CAUTION / NOTICE / HINT

HINT:

  • Perform the simulation method by selecting check mode (Signal Check) using the Techstream (See page ).
  • 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 or rough road (See page ).
PROCEDURE

  1. CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION

(a) Turn the ignition switch to ON.

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

HINT:

Refer to the normal condition of the passenger airbag ON/OFF indicator (See page ).



ON/OFF Indicator Illumination

Proceed to

Always ON

A

OFF

B

B

GO TO STEP 9
A

  1. CHECK CONNECTORS

(a) Turn the ignition switch off.

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

(c) Check that the connectors are properly connected to the center airbag sensor assembly and accessory meter assembly. Also check that the connectors that link the instrument panel wire, No. 2 instrument panel wire and No. 3 instrument panel wire are properly connected.

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 accessory meter assembly. Also disconnect the connectors that link the instrument panel wire, No. 2 instrument panel wire and No. 3 instrument panel wire.

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

OK:

The terminals are not deformed or damaged.


NG

REPLACE WIRE HARNESS
OK

  1. CHECK PASSENGER AIRBAG ON/OFF INDICATOR

(a) Connect the connectors that link the instrument panel wire, No. 2 instrument panel wire and No. 3 instrument panel wire.

(b) Connect the connector to the accessory meter assembly.

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

(d) Turn the ignition switch to ON.

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

OK:

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


NG

GO TO STEP 5
OK

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

(d) Clear the DTCs stored in memory (See page ).


(e) Turn the ignition switch off.

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

(g) Check for DTCs (See page ).


OK:

DTC B1660/43 is not output.

Text in Illustration

*1

Accessory Meter Assembly

*2

Center Airbag Sensor Assembly

HINT:

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


OK

USE SIMULATION METHOD TO CHECK

NG

REPLACE CENTER AIRBAG SENSOR ASSEMBLY

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

(a) Turn the ignition switch off.


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

(c) Connect the connectors that link the instrument panel wire, No. 2 instrument panel wire and No. 3 instrument panel wire.

(d) Disconnect the connector from the accessory meter assembly.

(e) 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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F2-23 (PAON) - F2-11 (P-AB)

Always

Below 1 Ω
Text in Illustration

*1

Accessory Meter Assembly

*2

Center Airbag Sensor Assembly

*3

Front view of wire harness connector

(to Center Airbag Sensor Assembly)

*4

Front view of wire harness connector

(to Accessory Meter Assembly)

*5

Connector B

*6

Connector E

NG

GO TO STEP 17
OK

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

(a) Disconnect SST from connector B.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F2-23 (PAON) - F2-11 (P-AB)

Always

1 MΩ or higher
Text in Illustration

*1

Accessory Meter Assembly

*2

Center Airbag Sensor Assembly

*3

Front view of wire harness connector

(to Accessory Meter Assembly)

*4

Connector E

NG

GO TO STEP 18
OK

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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F2-23 (PAON) - Body ground

Always

1 MΩ or higher

F2-11 (P-AB) - Body ground

Always

1 MΩ or higher
Text in Illustration

*1

Accessory Meter Assembly

*2

Center Airbag Sensor Assembly

*3

Front view of wire harness connector

(to Accessory Meter Assembly)

*4

Connector E

NG

GO TO STEP 19
OK

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

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

(b) Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

F2-23 (PAON) - Body ground

Ignition switch ON

Below 1 V

F2-11 (P-AB) - Body ground

Ignition switch ON

Below 1 V
Text in Illustration

*1

Accessory Meter Assembly

*2

Center Airbag Sensor Assembly

*3

Front view of wire harness connector

(to Accessory Meter Assembly)

*4

Connector E

OK

REPLACE ACCESSORY METER ASSEMBLY

NG

GO TO STEP 20

  1. CHECK CONNECTORS

(a) Turn the ignition switch off.

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

(c) Check that the connectors are properly connected to the center airbag sensor assembly and accessory meter assembly. Also check that the connectors that link the instrument panel wire, No. 2 instrument panel wire and No. 3 instrument panel wire are properly connected.

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 accessory meter assembly. Also disconnect the connectors that link the instrument panel wire, No. 2 instrument panel wire and No. 3 instrument panel wire.

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

OK:

The terminals are not deformed or damaged.


NG

REPLACE WIRE HARNESS
OK

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

(a) Connect the connectors that link the instrument panel wire, No. 2 instrument panel wire and No. 3 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) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

F2-23 (PAON) - F2-11 (P-AB)

Always

Below 1 Ω
Text in Illustration

*1

Accessory Meter Assembly

*2

Center Airbag Sensor Assembly

*3

Front view of wire harness connector

(to Center Airbag Sensor Assembly)

*4

Front view of wire harness connector

(to Accessory Meter Assembly)

*5

Connector B

*6

Connector E

NG

GO TO STEP 17
OK

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

(a) Disconnect SST from connector B.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F2-23 (PAON) - F2-11 (P-AB)

Always

1 MΩ or higher
Text in Illustration

*1

Accessory Meter Assembly

*2

Center Airbag Sensor Assembly

*3

Front view of wire harness connector

(to Accessory Meter Assembly)

*4

Connector E

NG

GO TO STEP 18
OK

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

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F2-23 (PAON) - Body ground

Always

1 MΩ or higher

F2-11 (P-AB) - Body ground

Always

1 MΩ or higher
Text in Illustration

*1

Accessory Meter Assembly

*2

Center Airbag Sensor Assembly

*3

Front view of wire harness connector

(to Accessory Meter Assembly)

*4

Connector E

NG

GO TO STEP 19
OK

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

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

(b) Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

F2-23 (PAON) - Body ground

Ignition switch ON

Below 1 V

F2-11 (P-AB) - Body ground

Ignition switch ON

Below 1 V
Text in Illustration

*1

Accessory Meter Assembly

*2

Center Airbag Sensor Assembly

*3

Front view of wire harness connector

(to Accessory Meter Assembly)

*4

Connector E

NG

GO TO STEP 20
OK

  1. CHECK ACCESSORY METER ASSEMBLY (SOURCE VOLTAGE)

(a) Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

F2-13 (IG+) - Body ground

Ignition switch ON

10 to 14 V
Text in Illustration

*1

Front view of wire harness connector

(to Accessory Meter Assembly)

NG

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

  1. CHECK PASSENGER AIRBAG ON/OFF INDICATOR

(a) Turn the ignition switch off.

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

(c) Connect the connector to the accessory meter assembly.

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

(e) Turn the ignition switch to ON.

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

Tester Connection

Switch Condition

Passenger Airbag ON/OFF Indicator

D6-23 (PAON) - Body ground

Ignition switch ON

"ON" comes on

D6-17 (P-AB) - Body ground

Ignition switch ON

"OFF" comes on
Text in Illustration

*1

Front view of wire harness connector

(to Center Airbag Sensor Assembly)

NG

REPLACE ACCESSORY METER ASSEMBLY
OK

  1. CHECK CENTER AIRBAG SENSOR ASSEMBLY

(a) Turn the ignition switch off.

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

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

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

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

(f) Clear the DTCs stored in memory (See page ).


(g) Turn the ignition switch off.

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

(i) Check for DTCs (See page ).


OK:

DTC B1660/43 is not output.

Text in Illustration

*1

Accessory Meter Assembly

*2

Center Airbag Sensor Assembly

HINT:

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


OK

USE SIMULATION METHOD TO CHECK

NG

REPLACE CENTER AIRBAG SENSOR ASSEMBLY

  1. CHECK WIRE HARNESS (OPEN)

(a) Disconnect the wire harness from the No. 3 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:

Tester Connection

Condition

Specified Condition

EF2-10 (PAON) - EF2-1 (P-AB)

Always

Below 1 Ω
Text in Illustration

*1

Accessory Meter Assembly

*2

Center Airbag Sensor Assembly

*3

No. 3 Instrument Panel Wire

*4

Wire Harness

*5

Front view of wire harness connector

(to Center Airbag Sensor Assembly)

*6

Front view of wire harness connector

(to No. 3 Instrument Panel Wire)

*7

Connector B

*8

Connector C

OK

REPLACE NO. 3 INSTRUMENT PANEL WIRE

NG

REPLACE WIRE HARNESS

  1. CHECK WIRE HARNESS (SHORT)

(a) Disconnect the wire harness from the No. 3 instrument panel wire.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

EF2-10 (PAON) - EF2-1 (P-AB)

Always

1 MΩ or higher
Text in Illustration

*1

Accessory Meter Assembly

*2

Center Airbag Sensor Assembly

*3

No. 3 Instrument Panel Wire

*4

Wire Harness

*5

Front view of wire harness connector

(to No. 3 Instrument Panel Wire)

*6

Connector C

OK

REPLACE NO. 3 INSTRUMENT PANEL WIRE

NG

REPLACE WIRE HARNESS

  1. CHECK WIRE HARNESS (SHORT TO GROUND)

(a) Disconnect the wire harness from the No. 3 instrument panel wire.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

EF2-10 (PAON) - Body ground

Always

1 MΩ or higher

EF2-1 (P-AB) - Body ground

Always

1 MΩ or higher
Text in Illustration

*1

Accessory Meter Assembly

*2

Center Airbag Sensor Assembly

*3

No. 3 Instrument Panel Wire

*4

Wire Harness

*5

Front view of wire harness connector

(to No. 3 Instrument Panel Wire)

*6

Connector C

OK

REPLACE NO. 3 INSTRUMENT PANEL WIRE

NG

REPLACE WIRE HARNESS

  1. CHECK WIRE HARNESS (SHORT TO B+)

(a) Turn the ignition switch off.

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

(c) Disconnect the wire harness from the No. 3 instrument panel wire.

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

(e) Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

EF2-10 (PAON) - Body ground

Ignition switch ON

Below 1 V

EF2-1 (P-AB) - Body ground

Ignition switch ON

Below 1 V
Text in Illustration

*1

Accessory Meter Assembly

*2

Center Airbag Sensor Assembly

*3

No. 3 Instrument Panel Wire

*4

Wire Harness

*5

Front view of wire harness connector

(to No. 3 Instrument Panel Wire)

*6

Connector C

OK

REPLACE NO. 3 INSTRUMENT PANEL WIRE

NG

REPLACE WIRE HARNESS

Test yourself

A quick Toyota Venza quiz: every answer comes with an explanation and a link to the manual page.