B1612
SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1612/83,B1613/83: Lost Communication with Front Airbag Sensor RH
DTC B1612/83 - Lost Communication with Front Airbag Sensor RH
DTC B1613/83 - Front Airbag Sensor RH Initialization Incomplete
DESCRIPTION
The front airbag sensor RH circuit consists of the center airbag sensor assembly and front airbag sensor RH.
The front airbag sensor RH detects impacts to the vehicle and sends signals to the center airbag sensor assembly to determine if the airbag should be deployed.
These DTCs are recorded when a malfunction is detected in the front airbag sensor RH circuit.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK CONNECTORS
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Check that the connectors are properly connected to the center airbag sensor assembly and the 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 connected securely, reconnect the connectors and proceed to the next inspection.
(d) Disconnect the connectors from the center airbag sensor assembly and the front airbag sensor RH. Also disconnect the connectors that link the engine room main wire and instrument panel wire.
(e) Check that the connector terminals are not damaged.
OK:
The terminals are not deformed or damaged.
NG -- REPLACE WIRE HARNESS
OK -- Continue to next step.
2. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (OPEN)
(a) Connect the connectors that link the engine room main wire and instrument panel wire.
(b) Using SST, connect terminals 29 (+SR) and 27 (-SR) of connector B.
NOTE: Do not forcibly insert SST into the terminals of the connector when connecting.
SST: 09843-18040
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- CHECK INSTRUMENT PANEL WIRE (OPEN)
OK -- Continue to next step.
3. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT)
(a) Disconnect SST from connector B.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- CHECK INSTRUMENT PANEL WIRE (SHORT)
OK -- Continue to next step.
4. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT TO B+)
(a) Connect the negative (-) terminal cable to the battery.
(b) Turn the ignition switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- CHECK INSTRUMENT PANEL WIRE (SHORT TO B+)
OK -- Continue to next step.
5. CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT TO GROUND)
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND)
OK -- Continue to next step.
6. CHECK FRONT AIRBAG SENSOR RH
(a) Connect the connector to the center airbag sensor assembly.
(b) Interchange the front airbag sensor LH with RH and connect the connectors to them.
(c) Connect the negative (-) terminal cable to the battery.
(d) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(e) Clear the DTCs stored in the memory DTC Check / Clear.
(f) Turn the ignition switch off.
(g) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(h) Check for DTCs DTC Check / Clear.
Result:
HINT: Codes other than DTC B1617/84, B1618/84, B1612/83, and B1613/83 may be output at this time, but they are not related to this check.
C -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
B -- REPLACE FRONT AIRBAG SENSOR RH
A -- USE SIMULATION METHOD TO CHECK
7. CHECK INSTRUMENT PANEL WIRE (OPEN)
(a) Disconnect the instrument panel wire connector from the engine room main wire.
HINT: SST has already been inserted into connector B.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE INSTRUMENT PANEL WIRE
OK -- REPLACE ENGINE ROOM MAIN WIRE
8. CHECK INSTRUMENT PANEL WIRE (SHORT)
(a) Disconnect the instrument panel wire connector from the engine room main wire.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE INSTRUMENT PANEL WIRE
OK -- REPLACE ENGINE ROOM MAIN WIRE
9. CHECK INSTRUMENT PANEL WIRE (SHORT TO B+)
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the instrument panel wire connector from the engine room main wire.
(d) Connect the negative (-) terminal cable to the battery.
(e) Turn the ignition switch on (IG).
(f) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- REPLACE INSTRUMENT PANEL WIRE
OK -- REPLACE ENGINE ROOM MAIN WIRE
10. CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND)
(a) Disconnect the instrument panel wire connector from the engine room main wire.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE INSTRUMENT PANEL WIRE
OK -- REPLACE ENGINE ROOM MAIN WIRE