SUPPLEMENTAL RESTRAINT SYSTEMS AIRBAG SYSTEM B1612/83 Lost Communication with Front Airbag Sensor RH B1613/83 Front Airbag Sensor RH Initialization Incomplete
DESCRIPTION
The front airbag sensor RH circuit consists of the airbag ECU assembly and front airbag sensor RH.
The front airbag sensor RH detects impacts to the vehicle and sends signals to the airbag ECU assembly to determine if the airbag and pretensioner should be deployed.
These DTCs are stored when a malfunction is detected in the front airbag sensor RH circuit.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Test Mode / Check Mode |
|---|---|---|---|---|
| B1612/83 | Lost Communication with Front Airbag Sensor RH | ·
The airbag ECU assembly detects a line short, short to ground or B+, or an open in the front airbag sensor RH circuit. ·
Front airbag sensor RH malfunction ·
Airbag ECU assembly malfunction |
·
Instrument panel wire ·
Engine room main wire ·
Front airbag sensor RH ·
Airbag ECU assembly |
Does not apply to test/check mode |
| B1613/83 | Front Airbag Sensor RH Initialization Incomplete | ·
The airbag ECU assembly detects a line short, short to ground or B+, or an open in the front airbag sensor RH circuit. ·
Front airbag sensor RH malfunction ·
Airbag ECU assembly malfunction |
·
Instrument panel wire ·
Engine room main wire ·
Front airbag sensor RH ·
Airbag ECU assembly |
Does not apply to test/check mode |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
- NOTICE:
-
After turning the ignition 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.
-
Click hereGeneral>INTRODUCTION>REPAIR INSTRUCTION>PRECAUTION
PROCEDURE
Turn the ignition switch off.
Disconnect the cable from the negative (-) battery terminal.
- CAUTION:
-
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
Check that the connectors are properly connected to the airbag ECU assembly and front airbag sensor RH. Also check that the connectors that link the engine room main wire and instrument panel wire are properly connected.
- OK:
The connectors are properly connected.
- HINT:
-
If the connectors are not properly connected, reconnect the connectors and proceed to the next inspection.
Disconnect the connectors from the airbag ECU assembly and front airbag sensor RH. Also disconnect the connectors that link the engine room main wire and instrument panel wire.
Check that the terminals of the connectors are not deformed or damaged.
- OK:
The terminals are not deformed or damaged.
- Result:
Proceed to OK NG
OK
NG
Connect the connectors that link the engine room main wire and instrument panel wire.
| *A | for Automatic Transaxle, Manual Transaxle without VSC | *B | for CVT, Manual Transaxle with VSC |
| *1 | Front Airbag Sensor RH | *2 | Airbag ECU Assembly |
| *3 | Service Wire | - | - |
| *a | Front view of wire harness connector
(to Airbag ECU Assembly) |
*b | Front view of wire harness connector
(to Front Airbag Sensor RH) |
Using a service wire, connect terminals 29 (+SR) and 27 (-SR) of connector B.
- NOTICE:
-
Do not forcibly insert the 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 A15-2 (+SR) - A15-1 (-SR) Always Below 1 Ω
- Result:
Proceed to OK NG
OK
NG
Disconnect the service wire from connector B.
| *A | for Automatic Transaxle, Manual Transaxle without VSC | *B | for CVT, Manual Transaxle with VSC |
| *1 | Front Airbag Sensor RH | *2 | Airbag ECU Assembly |
| *a | Front view of wire harness connector
(to Front Airbag Sensor RH) |
- | - |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition A15-2 (+SR) - A15-1 (-SR) Always 1 MΩ or higher
- Result:
Proceed to OK NG
OK
NG
Connect the cable to the negative (-) battery terminal.
| *A | for Automatic Transaxle, Manual Transaxle without VSC | *B | for CVT, Manual Transaxle with VSC |
| *1 | Front Airbag Sensor RH | *2 | Airbag ECU Assembly |
| *a | Front view of wire harness connector
(to Front Airbag Sensor RH) |
- | - |
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition A15-2 (+SR) - Body ground Ignition switch ON Below 1 V A15-1 (-SR) - Body ground Ignition switch ON Below 1 V
Turn the ignition switch off.
Disconnect the cable from the negative (-) battery terminal.
- CAUTION:
-
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
- Result:
Proceed to OK NG
OK
NG
Measure the resistance according to the value(s) in the table below.
| *A | for Automatic Transaxle, Manual Transaxle without VSC | *B | for CVT, Manual Transaxle with VSC |
| *1 | Front Airbag Sensor RH | *2 | Airbag ECU Assembly |
| *a | Front view of wire harness connector
(to Front Airbag Sensor RH) |
- | - |
- Standard Resistance:
Tester Connection Condition Specified Condition A15-2 (+SR) - Body ground Always 1 MΩ or higher A15-1 (-SR) - Body ground Always 1 MΩ or higher
- Result:
Proceed to OK NG
OK
NG
| *A | for Automatic Transaxle, Manual Transaxle without VSC |
| *B | for CVT, Manual Transaxle with VSC |
| *1 | Front Airbag Sensor LH |
| *2 | Airbag ECU Assembly |
Connect the connector to the airbag ECU assembly.
Interchange the front airbag sensor RH with LH and connect the connectors.
Connect the cable to the negative (-) battery terminal.
Clear the DTCs stored in memory.
Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM>DTC CHECK / CLEAR
- Body Electrical > SRS Airbag > Clear DTCs
- 50002 188
Turn the ignition switch off.
Turn the ignition switch to ON, and wait for at least 60 seconds.
Check for DTCs.
Click hereVehicle Interior>SUPPLEMENTAL RESTRAINT SYSTEMS>AIRBAG SYSTEM>DTC CHECK / CLEAR
- Body Electrical > SRS Airbag > Trouble Codes
- 50001 188
- HINT:
-
Codes other than DTCs B1612/83, B1613/83, B1617/84 and B1618/84 may be output at this time, but they are not related to this check.
- Result:
Result Proceed to DTCs B1612/83, B1613/83, B1617/84 and B1618/84 are not output. A DTC B1617/84 or B1618/84 is output. B DTC B1612/83 or B1613/83 is output. C
Turn the ignition switch off.
Disconnect the cable from the negative (-) battery terminal.
- CAUTION:
-
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.
Return the front airbag sensor RH and LH to their original positions and connect the connectors.
A
Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING
B
C
Disconnect the instrument panel wire connector from the engine room main wire.
| *A | for Automatic Transaxle, Manual Transaxle without VSC | *B | for CVT, Manual Transaxle with VSC |
| *1 | Front Airbag Sensor RH | *2 | Airbag ECU Assembly |
| *3 | Engine Room Main Wire | *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector
(to Engine Room Main Wire) |
- | - |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition AE5-2 (+SR) - Body ground Always 1 MΩ or higher AE5-1 (-SR) - Body ground Always 1 MΩ or higher
- Result:
Proceed to OK NG
OK
NG
Disconnect the instrument panel wire connector from the engine room main wire.
| *A | for Automatic Transaxle, Manual Transaxle without VSC | *B | for CVT, Manual Transaxle with VSC |
| *1 | Front Airbag Sensor RH | *2 | Airbag ECU Assembly |
| *3 | Engine Room Main Wire | *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector
(to Engine Room Main Wire) |
- | - |
Connect the cable to the negative (-) battery terminal.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition AE5-2 (+SR) - Body ground Ignition switch ON Below 1 V AE5-1 (-SR) - Body ground Ignition switch ON Below 1 V
- Result:
Proceed to OK NG
OK
NG
Disconnect the instrument panel wire connector from the engine room main wire.
| *A | for Automatic Transaxle, Manual Transaxle without VSC | *B | for CVT, Manual Transaxle with VSC |
| *1 | Front Airbag Sensor RH | *2 | Airbag ECU Assembly |
| *3 | Engine Room Main Wire | *4 | Instrument Panel Wire |
| *a | Front view of wire harness connector
(to Engine Room Main Wire) |
- | - |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition AE5-2 (+SR) - AE5-1 (-SR) Always 1 MΩ or higher
- Result:
Proceed to OK NG
OK
NG
Disconnect the instrument panel wire connector from the engine room main wire.
- HINT:
-
The service wire has already been inserted into connector B.
| *A | for Automatic Transaxle, Manual Transaxle without VSC | *B | for CVT, Manual Transaxle with VSC |
| *1 | Front Airbag Sensor RH | *2 | Airbag ECU Assembly |
| *3 | Engine Room Main Wire | *4 | Instrument Panel Wire |
| *5 | Service Wire | - | - |
| *a | Front view of wire harness connector
(to Airbag ECU Assembly) |
*b | Front view of wire harness connector
(to Engine Room Main Wire) |
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition AE5-2 (+SR) - AE5-1 (-SR) Always Below 1 Ω
Disconnect the service wire from connector B.
- Result:
Proceed to OK NG
OK
NG