Part 2

SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (for Separate Type Yaw Rate Sensor): B1627/82, B1628/82, B1637/82, B1638/82, B1647/82, B1648/82, B1697/82, B1698/82: Lost communication with Side Airbag Sensor LH
B1698/82 - Door Side Airbag Sensor LH Initialization Incomplete - (Continued)

21. CHECK CONNECTORS

(a) Turn the power switch off.

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

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

(c) Check that the connectors are properly connected to the airbag sensor assembly, side airbag sensor assembly LH and side No. 2 airbag sensor assembly LH.

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 airbag sensor assembly, side airbag sensor assembly LH and side No. 2 airbag sensor assembly LH.

(e) Check that the terminals of the connectors are not damaged.

OK:

The terminals are not deformed or damaged.

NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

22. CHECK FLOOR WIRE (OPEN)

(a) Using a service wire, connect terminals 8 (BBL+) and 15 (BBL-) of connector B.

NOTICE:
Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

23. CHECK FLOOR WIRE (SHORT)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration

NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

24. CHECK FLOOR WIRE (SHORT TO B+)

(a) Connect the cable to the negative (-) auxiliary battery terminal.

(b) Turn the power switch on (IG).

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

(d) Turn the power switch off.

(e) Disconnect the cable from the negative (-) auxiliary battery terminal.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

Text in Illustration

NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

25. CHECK FLOOR WIRE (SHORT TO GROUND)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration

NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

26. CHECK FLOOR WIRE (OPEN)

(a) Using a service wire, connect terminals 4 (BCL+) and 3 (BCL-) of connector C.

NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

27. CHECK FLOOR WIRE (SHORT)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration

NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

28. CHECK FLOOR WIRE (SHORT TO B+)

(a) Connect the cable to the negative (-) auxiliary battery terminal.

(b) Turn the power switch on (IG).

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

29. CHECK FLOOR WIRE (SHORT TO GROUND)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration

NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

30. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH

(a) Connect the connectors to the side No. 2 airbag sensor assembly LH and airbag sensor assembly.

(b) Interchange the side airbag sensor assembly LH with RH and connect the connectors.

(c) Connect the cable to the negative (-) auxiliary battery terminal.

(d) Clear the DTCs stored in memory Separate Type Yaw Rate Sensor.

(e) Turn the power switch off.

(f) Turn the power switch on (IG), and wait for at least 60 seconds.

(g) Check for DTCs Separate Type Yaw Rate Sensor.

Result:

HINT
Codes other than DTCs B1623 and B1628 may be output at this time, but they are not related to this check.

(h) Turn the power switch off.

(i) Disconnect the cable from the negative (-) auxiliary battery terminal.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

(j) Return the side airbag sensor assembly LH and RH to their original positions and connect the connectors.

Text in Illustration

B -- REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH Removal

C -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting
A -- Continue to next step.

31. CHECK SIDE NO. 2 AIRBAG SENSOR ASSEMBLY LH

(a) Interchange the side No. 2 airbag sensor assembly LH with RH and connect the connectors.

(b) Connect the cable to the negative (-) auxiliary battery terminal.

(c) Clear the DTCs stored in memory Separate Type Yaw Rate Sensor.

(d) Turn the power switch off.

(e) Turn the power switch on (IG), and wait for at least 60 seconds.

(f) Check for DTCs Separate Type Yaw Rate Sensor.

Result:

HINT
Codes other than DTCs B1623 and B1628 may be output at this time, but they are not related to this check.

(g) Turn the power switch off.

(h) Disconnect the cable from the negative (-) auxiliary battery terminal.

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

(i) Return the side No. 2 airbag sensor assembly LH and RH to their original positions and connect the connectors.

Text in Illustration

B -- REPLACE SIDE NO. 2 AIRBAG SENSOR ASSEMBLY LH Removal

C -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

A -- REPLACE AIRBAG SENSOR ASSEMBLY Removal

32. CHECK CONNECTORS

(a) Turn the power switch off.

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

CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

(c) Check that the connectors are properly connected to the side airbag sensor assembly LH, side No. 2 airbag sensor assembly LH and door side airbag sensor LH. Also check that the connectors that link the floor wire and front door wire LH 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 side airbag sensor assembly LH, side No. 2 airbag sensor assembly LH and door side airbag sensor LH. Also disconnect the connectors that link the floor wire and front door wire LH.

(e) Check that the terminals of the connectors are not damaged.

OK:

The terminals are not deformed or damaged.

NG -- REPLACE WIRE HARNESS
OK -- Continue to next step.

33. CHECK FLOOR WIRE (OPEN)

(a) Using a service wire, connect terminals 4 (BCL+) and 3 (BCL-) of connector C.

NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

34. CHECK FLOOR WIRE (SHORT)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration

NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

35. CHECK FLOOR WIRE (SHORT TO B+)

(a) Connect the cable to the negative (-) auxiliary battery terminal.

(b) Turn the power switch on (IG).

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

36. CHECK FLOOR WIRE (SHORT TO GROUND)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration

NG -- REPLACE FLOOR WIRE
OK -- Continue to next step.

37. CHECK DOOR SIDE AIRBAG SENSOR LH CIRCUIT (OPEN)

(a) Connect the connectors that link the floor wire and front door wire LH.

(b) Using a service wire, connect terminals 2 (BDL+) and 1 (BDL-) of connector E.

NOTICE:
Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration

NG -- CHECK FRONT DOOR WIRE LH (OPEN)
OK -- Continue to next step.

38. CHECK DOOR SIDE AIRBAG SENSOR LH CIRCUIT (SHORT)

(a) Disconnect the service wire from connector E.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration

NG -- CHECK FRONT DOOR WIRE LH (SHORT)
OK -- Continue to next step.

39. CHECK DOOR SIDE AIRBAG SENSOR LH CIRCUIT (SHORT TO B+)

(a) Connect the cable to the negative (-) auxiliary battery terminal.

(b) Turn the power switch on (IG).

(c) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

NG -- CHECK FRONT DOOR WIRE LH (SHORT TO B+)
OK -- Continue to next step.

40. CHECK DOOR SIDE AIRBAG SENSOR LH CIRCUIT (SHORT TO GROUND)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Text in Illustration

NG -- CHECK FRONT DOOR WIRE LH (SHORT TO GROUND)
OK -- Continue to next step.