DESCRIPTION
The front airbag sensor LH consists of a diagnostic circuit and frontal deceleration sensor, etc.
If the airbag ECU assembly receives signals from the frontal deceleration sensor, it determines whether the SRS should be activated.
DTC B1615/14 is stored when a malfunction is detected in the front airbag sensor LH circuit.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
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B1615/14 | Front Airbag Sensor LH Malfunction | Either condition is met:
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WIRING DIAGRAM
*a | Front Airbag Sensor LH |
*b | Airbag ECU Assembly |
CAUTION / NOTICE / HINT
Note
After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.
When disconnecting the cable from the negative (-) battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected.
After replacing the airbag ECU assembly, refer to initialization.
PROCEDURE
CHECK FRONT AIRBAG SENSOR LH
*1 | Front Airbag Sensor RH |
*2 | Airbag ECU Assembly |
Turn the engine switch off.
Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
Interchange the front airbag sensor LH with RH and connect the connectors to them.
Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
Turn the engine switch on (IG), and wait for at least 60 seconds.
Clear the DTCs stored in memory.
Turn the engine switch off.
Turn the engine switch on (IG), and wait for at least 60 seconds.
Check for DTCs.
Result | ||||
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Tech Tips
Codes other than DTC B1610/13 and B1615/14 may be output at this time, but they are not related to this check.
Turn the engine switch off.
Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
Return the front airbag sensor RH and LH to their original positions and connect the connectors to them.
DTC B1615/14 is output |
REPLACE AIRBAG ECU ASSEMBLY Click here |
DTC B1610/13 is output |
REPLACE FRONT AIRBAG SENSOR LH Click here |
DTC B1610/13 and B1615/14 are not output |
USE SIMULATION METHOD TO CHECK Click here |