CHECK CONNECTION OF CONNECTORS
CHECK REAR AIRBAG SENSOR LH CIRCUIT
DTC B1635/24 Front Passenger Side Rear Airbag Sensor Malfunction |
DESCRIPTION
The rear airbag sensor LH consists of the safing sensor, the diagnostic circuit, the lateral deceleration sensor, etc.If the center airbag sensor receives signals from the lateral deceleration sensor, it determines whether the SRS should be activated.
DTC B1635/24 is recorded when a malfunction is detected in the rear airbag sensor LH circuit.
| DTC Code | Detection Condition | Trouble Area |
| B1635/24 | When both conditions below are met:
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WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.CHECK CONNECTION OF CONNECTORS |
Turn the ignition switch OFF.
Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
Check that the connector is properly connected to the rear airbag sensor LH.
- OK:
- The connector is properly connected.
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| OK | |
| 2.CHECK CONNECTORS |
Disconnect the connectors from the side airbag sensor LH and rear airbag sensor LH.
Check that the connector (on the rear airbag sensor LH side) is not damaged.
- OK:
- The connector is not deformed or damaged.
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| OK | |
| 3.CHECK REAR AIRBAG SENSOR LH CIRCUIT |
Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
Turn the ignition switch ON.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition R17-4 (BCL+) - Body ground Ignition switch ON Below 1 V R17-3 (BCL-) - Body ground
Turn the ignition switch OFF.
Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
Using a service wire, connect terminals 2 (BCL-) and 1 (BCL+) of connector B.
- NOTICE:
- Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition R17-4 (BCL+) - R17-3 (BCL-) Always Below 1 Ω
Disconnect the service wire from connector B.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition R17-4 (BCL+) - R17-3 (BCL-) Always 1 MΩ or higher R17-4 (BCL+) - Body ground R17-3 (BCL-) - Body ground
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| OK | |
| 4.CHECK FOR DTC |
Connect the connectors to the side airbag sensor LH.
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Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
Turn the ignition switch ON, and wait for at least 60 seconds.
Clear the DTCs stored in the memory (Toyota Fortuner RM000000YVY008X.html).
Turn the ignition switch OFF.
Turn the ignition switch ON, and wait for at least 60 seconds.
Check for DTCs (Toyota Fortuner RM000000YVY008X.html).
- OK:
- DTC B1635 is output.
- HINT:
- Codes other than B1635 may be output at this time, but they are not related to this check.
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| OK | |
| 5.CHECK SIDE AIRBAG SENSOR LH |
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Interchange the side airbag sensor RH with LH and connect the connectors to them.
Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
Turn the ignition switch ON, and wait for at least 60 seconds.
Clear the DTCs stored in the memory (Toyota Fortuner RM000000YVY008X.html).
Turn the ignition switch OFF.
Turn the ignition switch ON, and wait for at least 60 seconds.
Check for DTCs (Toyota Fortuner RM000000YVY008X.html).
Result Result Proceed to DTC B1630 and B1635 are not output A DTC B1635 is output B DTC B1630 is output C - HINT:
- Codes other than DTC B1630 and B1635 may be output at this time, but they are not related to this check.
Turn the ignition switch OFF.
Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
Return the side airbag sensor RH and LH to their original positions and connect the connectors to them.
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| A | ||
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