| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001G4PL |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - 09/2022] |
| Title: SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (for HV Model): B1635,B1637; Curtain Shield Airbag Sensor (LH); 2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022] | ||
|
DTC |
B1635 |
Curtain Shield Airbag Sensor (LH) |
|
DTC |
B1637 |
Curtain Shield Airbag Sensor Lost Communication (LH) |
DESCRIPTION
The side collision sensor LH circuit (bus 1) consists of the airbag sensor assembly, side airbag pressure sensor LH and side No. 2 airbag sensor LH.
The side airbag pressure sensor LH and side No. 2 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 side No. 2 airbag sensor LH.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Test Mode / Check Mode |
|---|---|---|---|---|---|
|
B1635 |
Curtain Shield Airbag Sensor (LH) |
|
|
Comes on |
Does not apply to test/check mode |
|
B1637 |
Curtain Shield Airbag Sensor Lost Communication (LH) |
|
|
Comes on |
Does not apply to test/check mode |
WIRING DIAGRAM
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![2020 - 2022 MY Corolla Corolla HV [01/2019 - 09/2022]; SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM (for HV Model): B1638; Curtain Shield Airbag Sensor Initialization Error (LH)+](/t3Portal/stylegraphics/info.gif)
CAUTION / NOTICE / HINT
NOTICE:
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
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PROCEDURE
|
1. |
CHECK SIDE NO. 2 AIRBAG SENSOR LH |
|
(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) Interchange the side No. 2 airbag sensor LH with RH and connect the connectors.
(d) Connect the cable to the negative (-) auxiliary battery terminal.
(e) Turn the power switch on (IG), and wait for at least 60 seconds.
(f) Clear the DTCs stored in memory.
Body Electrical > SRS Airbag > Clear DTCs
(g) Turn the power switch off.
(h) Turn the power switch on (IG), and wait for at least 60 seconds.
(i) Check for DTCs.
Body Electrical > SRS Airbag > Trouble Codes
HINT:
Codes other than DTCs B1630, B1632, B1635 and B1637 may be output at this time, but they are not related to this check.
|
Result |
Proceed to |
|---|---|
|
DTC B1635 or B1637 is output. |
A |
|
DTC B1630 or B1632 is output. |
B |
|
DTCs B1630, B1632, B1635 and B1637 are not output. |
C |
(j) Turn the power switch off.
(k) 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.
(l) Return the side No. 2 airbag sensor LH and RH to their original positions and connect the connectors.
| A |
|
REPLACE AIRBAG SENSOR ASSEMBLY
|
| B |
|
REPLACE SIDE NO. 2 AIRBAG SENSOR LH
|
| C |
|
|
|