Toyota Corolla Cross: Passenger Seat Occupant Classification Sensor "C" Missing Message (B00C287)

DESCRIPTION

• *: The rear occupant classification sensor LH is built into the front seat cushion spring sub-assembly RH.

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

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

Click here

HINT:

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

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HINT:

• If it is difficult to perform troubleshooting (wire harness inspection), remove the front passenger seat installation bolts to see under the seat cushion.
• In the above case, lift and hold the seat so that it does not fall down. Hold the seat only as necessary because holding the seat for a long period of time may cause seat rail deformation.

PROCEDURE

(a) Check for DTCs.

HINT:

Codes other than DTC B00C087 and B00C287 may be output at this time, but they are not related to this check.

B

GO TO STEP 5

C

USE SIMULATION METHOD TO CHECK

A

(a) Turn the ignition switch off.

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

CAUTION:

Wait at least 60 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 airbag ECU assembly, front occupant classification sensor LH and rear occupant classification sensor LH.

OK:

The connectors are properly connected.

NG

CONNECT CONNECTORS PROPERLY

OK

(a) Disconnect the connectors from the airbag ECU assembly, front occupant classification sensor LH and rear occupant classification sensor LH.

(b) Check that the terminals of the connectors are not deformed or damaged. OK: The terminals of the connectors are not deformed or damaged.

*1 Front Occupant Classification Sensor LH *2 Rear Occupant Classification Sensor LH *3 Airbag ECU Assembly *4 Wire Harness

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

(a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition O17-24 (SVC) - j16-1 (SVC) Always Below 1 Ω O17-32 (SIG) - j16-2 (SIG) Always Below 1 Ω O17-31 (SGD) - j16-3 (SGD) Always Below 1 Ω O17-24 (SVC) - j17-1 (SVC) Always Below 1 Ω O17-32 (SIG) - j17-2 (SIG) Always Below 1 Ω O17-31 (SGD) - j17-3 (SGD) Always Below 1 Ω

*1 Front Occupant Classification Sensor LH *2 Rear Occupant Classification Sensor LH *3 Airbag ECU Assembly *4 Wire Harness *a Front view of wire harness connector (to Airbag ECU Assembly) *b Front view of wire harness connector (to Front Occupant Classification Sensor LH) *c Front view of wire harness connector (to Rear Occupant Classification Sensor LH)

OK

REPLACE AIRBAG ECU ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

(a) Turn the ignition switch off.

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

CAUTION:

Wait at least 60 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 airbag ECU assembly and rear occupant classification sensor LH.

OK:

The connectors are properly connected.

NG

CONNECT CONNECTORS PROPERLY

OK

(a) Disconnect the connectors from the airbag ECU assembly and rear occupant classification sensor LH.

(b) Check that the terminals of the connectors are not deformed or damaged. OK: The terminals of the connectors are not deformed or damaged.

*1 Rear Occupant Classification Sensor LH *2 Airbag ECU Assembly *3 Wire Harness

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

(a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition O17-24 (SVC) - j17-1 (SVC) Always Below 1 Ω O17-32 (SIG) - j17-2 (SIG) Always Below 1 Ω O17-31 (SGD) - j17-3 (SGD) Always Below 1 Ω

*1 Rear Occupant Classification Sensor LH *2 Airbag ECU Assembly *3 Wire Harness *a Front view of wire harness connector (to Airbag ECU Assembly) *b Front view of wire harness connector (to Rear Occupant Classification Sensor LH)

OK

REPLACE FRONT SEAT CUSHION SPRING SUB-ASSEMBLY RH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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