DESCRIPTION
The side collision sensor LH circuit (bus 1) consists of the airbag sensor assembly, door side airbag sensor LH, No. 1 side airbag sensor LH and No. 2 side airbag sensor LH.
The door side airbag sensor LH, No. 1 side airbag sensor LH and No. 2 side airbag sensor LH detect impacts to the vehicle and send signals to the airbag sensor assembly to determine if the airbags and pretensioners should be deployed.
These DTCs are stored when a malfunction is detected in the door side airbag sensor LH.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Test Mode / Check Mode |
---|---|---|---|---|
B167A/5A |
Front Door Pressure Sensor LH |
Any of the following conditions is met:
|
|
Does not apply to test/check mode |
B167E/5A |
Front Door Pressure Sensor Threshold Malfunction (LH) |
Any of the following conditions is met:
|
|
Does not apply to test/check mode |
Vehicle Condition |
|||
---|---|---|---|
Pattern 1 |
Pattern 2 |
||
Diagnosis Condition |
Ignition switch ON |
○ |
○ |
Malfunction Status |
Door side airbag sensor LH malfunction |
○ |
- |
Airbag sensor assembly malfunction |
- |
○ |
|
Detection Time |
- |
- |
|
Number of Trips |
1 trip |
1 trip |
Vehicle Condition |
|||
---|---|---|---|
Pattern 1 |
Pattern 2 |
||
Diagnosis Condition |
Ignition switch ON |
○ |
○ |
Malfunction Status |
Door side airbag sensor LH malfunction |
○ |
- |
Airbag sensor assembly malfunction |
- |
○ |
|
Detection Time |
- |
- |
|
Number of Trips |
1 trip |
1 trip |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
WIRING DIAGRAM
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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.
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PROCEDURE
1. |
CHECK DOOR SIDE AIRBAG SENSOR LH |
(a) Turn the ignition switch off. |
|
(b) Disconnect the cable from the negative (-) battery terminal.
CAUTION:
Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminals to disable the SRS system.
(c) Interchange the door side airbag sensor LH with RH and connect the connectors.
(d) Connect the cable to the negative (-) battery terminal.
(e) Clear the DTCs stored in memory.
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(f) Turn the ignition switch off.
(g) Turn the ignition switch ON, and wait for at least 60 seconds.
(h) Check for DTCs.
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HINT:
Codes other than DTCs B166C/4A, B166F/4A, B167A/5A and B167E/5A may be output at this time, but they are not related to this check.
Result |
Proceed to |
---|---|
DTC B167A/5A or B167E/5A is output. |
A |
DTC B166C/4A or B166F/4A is output. |
B |
DTCs B166C/4A, B166F/4A, B167A/5A and B167E/5A are not output. |
C |
(i) Turn the ignition switch off.
(j) 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.
(k) Return the door side airbag sensor LH and RH to their original positions and connect the connectors.
A | ![]() |
REPLACE AIRBAG SENSOR ASSEMBLY |
B | ![]() |
REPLACE DOOR SIDE AIRBAG SENSOR LH |
C | ![]() |
USE SIMULATION METHOD TO CHECK |
Toyota CH-R Service Manual > Vehicle Stability Control System: Check For Intermittent Problems
CHECK FOR INTERMITTENT PROBLEMS
CHECK FOR INTERMITTENT PROBLEMS
HINT:
A momentary interruption (open circuit) in the connectors and/or wire harness
between the sensors and ECUs can be detected using the Data List function of the
Techstream.
(a) Turn the ignition switch off.
(b) Connect the ...
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