Toyota Venza manuals

Toyota Venza: Trouble in Passenger Airbag ON/OFF Indicator

DESCRIPTION

The occupant classification system detects the front passenger seat condition. It then informs a passenger of the front passenger airbag assembly and front seat belt pretensioner RH condition (activated/not activated) with the passenger airbag ON/OFF indicator.

HINT:

Approximately 6 seconds after the ignition switch is turned to ON, the passenger airbag ON/OFF indicator will be ON/OFF depending on the conditions listed below.

Front Passenger Seat Condition

Passenger Airbag ON/OFF Indicator

SRS Warning Light

ON Indicator

OFF Indicator

Vacant

OFF

OFF

OFF

Adult is seated.

ON

OFF

OFF

Child is seated.

OFF

ON

OFF

Child restraint system is set.

OFF

ON

OFF

Occupant classification system failure

OFF

ON

ON

PROCEDURE

1.

CHECK SRS WARNING LIGHT

(a) Turn the ignition switch to ON, and check the SRS warning light condition.

HINT:

If this trouble occurs, the SRS warning light is off. If the light is on, a DTC is output. Troubleshoot for the output DTC.

OK:

After the primary check period, the SRS warning light goes off.

HINT:

The primary check is performed for approximately 6 seconds after the ignition switch is turned to ON.


NG

GO TO DTC CHART


OK

2.

PERFORM ZERO POINT CALIBRATION

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Using the Techstream, perform Zero Point Calibration (See page ).


OK:

"Zero Point Calibration is complete." is displayed.


NG

GO TO STEP 4


OK

3.

PERFORM SENSITIVITY CHECK

(a) Using the Techstream, perform Sensitivity Check (See page ).


Standard:

27 to 33 kg (59.5 to 72.8 lb)


OK

END


NG

4.

RETIGHTEN FRONT SEAT ASSEMBLY RH BOLT

(a) Turn the ignition switch off.

(b) Loosen the 4 installation bolts of the front seat assembly RH.

(c) Tighten the 4 installation bolts of the front seat assembly RH to the specified torque.

Torque:

37 N·m {377 kgf·cm, 27 ft·lbf}


NEXT

5.

PERFORM ZERO POINT CALIBRATION

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Using the Techstream, perform Zero Point Calibration (See page ).


OK:

"Zero Point Calibration is complete." is displayed.


NG

GO TO STEP 7


OK

6.

PERFORM SENSITIVITY CHECK

(a) Using the Techstream, perform Sensitivity Check (See page ).


Standard:

27 to 33 kg (59.5 to 72.8 lb)


OK

END


NG

7.

READ VALUE USING PASSENGER SIDE BUCKLE SWITCH

(a) Turn the ignition switch to ON.

(b) Using the Techstream, read the "Data List" (See page ).


(1) Read the display when the passenger side buckle switch is operated.

Occupant Detection

Tester Display

Measurement Item / Range

Normal Condition

Diagnostic Note

Passenger Buckle SW

Passenger side buckle switch/

Set: The seat belt is fastened

Unset: The seat belt is not fastened

NG: Data is not determined

Unset/Set

-

OK:

The Techstream display changes correctly in accordance with the operation of the buckle switch.


NG

GO TO STEP 12


OK

8.

CHECK CONNECTORS

(a) Turn the ignition switch off.

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

(c) Disconnect the connectors from the occupant classification ECU and 4 occupant classification sensors.

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

OK:

The terminals are not deformed or damaged.


NG

REPLACE FRONT SEAT WIRE RH


OK

9.

REPLACE OCCUPANT CLASSIFICATION ECU

(a) Connect the connectors to the 4 occupant classification sensors.

(b) Replace the occupant classification ECU (See page ).



NEXT

10.

PERFORM ZERO POINT CALIBRATION

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

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Using the Techstream, perform Zero Point Calibration (See page ).


OK:

"Zero Point Calibration is complete." is displayed.


NEXT

11.

PERFORM SENSITIVITY CHECK

(a) Using the Techstream, perform Sensitivity Check (See page ).


Standard:

27 to 33 kg (59.5 to 72.8 lb)


NEXT

END

12.

CHECK CONNECTORS

(a) Turn the ignition switch off.

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

(c) Disconnect the connectors from the occupant classification ECU and front seat inner belt assembly RH.

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

OK:

The terminals are not deformed or damaged.


NG

REPLACE FRONT SEAT WIRE RH


OK

13.

REPLACE FRONT SEAT INNER BELT ASSEMBLY RH

(a) Connect the connector to the occupant classification ECU.

(b) Replace the front seat inner belt assembly RH (See page ).



NEXT

14.

PERFORM ZERO POINT CALIBRATION

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

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Using the Techstream, perform Zero Point Calibration (See page ).


OK:

"Zero Point Calibration is complete." is displayed.


NEXT

15.

PERFORM SENSITIVITY CHECK

(a) Using the Techstream, perform Sensitivity Check (See page ).


Standard:

27 to 33 kg (59.5 to 72.8 lb)


NEXT

END

Front Occupant Classification Sensor LH Circuit Malfunction (B1780)
DESCRIPTION The front occupant classification sensor LH circuit consists of the occupant classification ECU and front occupant classification sensor LH. DTC B1780 is recorded when a malfunction is ...

Rear Airbag Sensor
...

Other materials about Toyota Venza:

Components
COMPONENTS ILLUSTRATION ILLUSTRATION ILLUSTRATION ILLUSTRATION ILLUSTRATION ILLUSTRATION ...

Terminals Of Ecu
TERMINALS OF ECU 1. CHECK ENGINE SWITCH (a) Disconnect the D13 engine switch connector. (b) Measure the resistance according to the value(s) in the table below. HINT: Measure the values on the wire harness side with connector disconnected. T ...

Reassembly
REASSEMBLY PROCEDURE 1. INSTALL COOLER DRYER (a) Using pliers, install a new cooler dryer to the modulator. (b) Apply sufficient compressor oil to the O-ring and fitting surfaces of t ...

© 2016-2019 Copyright www.tovenza.com

0.2202