| Last Modified: 11-20-2023 | 6.11:8.1.0 | Doc ID: RM1000000012VC3 |
| Model Year Start: 2018 | Model: Camry | Prod Date Range: [03/2017 - 06/2017] |
| Title: SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: B1653; Driver Side Seat Position Sensor; 2018 MY Camry [03/2017 - 06/2017] | ||
|
DTC |
B1653 |
Driver Side Seat Position Sensor |
DESCRIPTION
The seat position sensor circuit consists of the airbag sensor assembly and seat position sensor (front seat adjuster assembly LH).
DTC B1653 is stored when a malfunction is detected in the seat position sensor circuit.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Test Mode / Check Mode |
|---|---|---|---|---|---|
|
B1653 |
Driver Side Seat Position Sensor |
|
|
Comes on |
Does not apply to test/check mode |
- *: The seat position sensor is built into the front seat adjuster assembly LH.
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.
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PROCEDURE
|
1. |
CHECK CONNECTION OF CONNECTORS |
(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 terminal to disable the SRS system.
(c) Check that the connectors are properly connected to the airbag sensor assembly, front seat inner belt assembly LH and seat position sensor.
OK:
The connectors are properly connected.
| NG |
|
CONNECT CONNECTORS PROPERLY |
|
|
2. |
CHECK CONNECTORS |
(a) Disconnect the connectors from the airbag sensor assembly, front seat inner belt assembly LH and seat position sensor.
(b) Check that the terminals of the connectors are not deformed or damaged.
OK:
The terminals are not deformed or damaged.
| NG |
|
REPLACE FLOOR WIRE, FRONT NO. 2 SEAT WIRE LH OR FRONT SEAT INNER BELT ASSEMBLY LH |
|
|
3. |
CHECK WIRE HARNESS |
(a) Connect the floor wire and front No. 2 seat wire LH to the front seat inner belt assembly LH.
|
*1 |
Seat Position Sensor |
*2 |
Front Seat Inner Belt Assembly LH |
|
*3 |
Airbag Sensor Assembly |
*4 |
Front No. 2 Seat Wire LH |
|
*5 |
Floor Wire |
*6 |
Service Wire |
|
*a |
Front view of wire harness connector (to Airbag Sensor Assembly) |
*b |
Front view of wire harness connector (to Seat Position Sensor) |
(b) Connect the cable to the negative (-) battery terminal.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G-2 (LSP+) - Body ground |
Ignition switch ON |
Below 1 V |
|
G-1 (LSP-) - Body ground |
Ignition switch ON |
Below 1 V |
(e) Turn the ignition switch off.
(f) 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.
(g) Using a service wire, connect terminals 25 (LSP+) and 26 (LSP-) of connector B.
NOTICE:
Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.
(h) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G-2 (LSP+) - G-1 (LSP-) |
Always |
Below 1 Ω |
(i) Disconnect the service wire from connector B.
(j) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G-2 (LSP+) - G-1 (LSP-) |
Always |
1 MΩ or higher |
|
G-2 (LSP+) - Body ground |
Always |
1 MΩ or higher |
|
G-1 (LSP-) - Body ground |
Always |
1 MΩ or higher |
| NG |
|
|
|
4. |
CHECK DTC |
|
(a) Connect the connectors to the airbag sensor assembly and seat position sensor. |
|
(b) Connect the cable to the negative (-) battery terminal.
(c) Turn the ignition switch to ON, and wait for at least 60 seconds.
(d) Clear the DTCs stored in memory.
Body Electrical > SRS Airbag > Clear DTCs
(e) Turn the ignition switch off.
(f) Turn the ignition switch to ON, and wait for at least 60 seconds.
(g) Check for DTCs.
Body Electrical > SRS Airbag > Trouble Codes
OK:
DTC B1653 is not output.
HINT:
Codes other than DTC B1653 may be output at this time, but they are not related to this check.
| OK |
|
|
|
5. |
CHECK AIRBAG SENSOR ASSEMBLY |
|
(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 terminal to disable the SRS system.
(c) Replace the airbag sensor assembly with a known good one.
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HINT:
Perform the following inspection using known good parts from another vehicle if possible.
(d) Connect the cable to the negative (-) battery terminal.
(e) Turn the ignition switch to ON, and wait for at least 60 seconds.
(f) Check for DTCs.
Body Electrical > SRS Airbag > Trouble Codes
OK:
DTC B1653 is not output.
HINT:
Codes other than DTC B1653 may be output at this time, but they are not related to this check.
(g) Turn the ignition switch off.
(h) 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.
(i) Restore the airbag sensor assembly that was installed for testing to its original location.
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| OK |
|
| NG |
|
REPLACE SEAT POSITION SENSOR (FRONT SEAT ADJUSTER ASSEMBLY LH) |
|
6. |
CHECK WIRE HARNESS |
(a) Disconnect the front No. 2 seat wire LH connector from the front seat inner belt assembly LH.
|
*1 |
Seat Position Sensor |
*2 |
Front Seat Inner Belt Assembly LH |
|
*3 |
Airbag Sensor Assembly |
*4 |
Front No. 2 Seat Wire LH |
|
*5 |
Floor Wire |
*6 |
Service Wire |
|
*a |
Front view of wire harness connector (to Airbag Sensor Assembly) |
*b |
Front view of wire harness connector (to Front No. 2 Seat Wire LH) |
(b) Connect the cable to the negative (-) battery terminal.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E-2 (LSP+) - Body ground |
Ignition switch ON |
Below 1 V |
|
E-1 (LSP-) - Body ground |
Ignition switch ON |
Below 1 V |
(e) Turn the ignition switch off.
(f) 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.
(g) Using a service wire, connect terminals 25 (LSP+) and 26 (LSP-) of connector B.
NOTICE:
Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.
(h) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E-2 (LSP+) - E-1 (LSP-) |
Always |
Below 1 Ω |
(i) Disconnect the service wire from connector B.
(j) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E-2 (LSP+) - E-1 (LSP-) |
Always |
1 MΩ or higher |
|
E-2 (LSP+) - Body ground |
Always |
1 MΩ or higher |
|
E-1 (LSP-) - Body ground |
Always |
1 MΩ or higher |
| OK |
|
REPLACE FRONT NO. 2 SEAT WIRE LH |
|
|
7. |
CHECK FLOOR WIRE |
(a) Disconnect the floor wire connector from the front seat inner belt assembly LH.
|
*1 |
Seat Position Sensor |
*2 |
Front Seat Inner Belt Assembly LH |
|
*3 |
Airbag Sensor Assembly |
*4 |
Front No. 2 Seat Wire LH |
|
*5 |
Floor Wire |
*6 |
Service Wire |
|
*a |
Front view of wire harness connector (to Airbag Sensor Assembly) |
*b |
Front view of wire harness connector (to Front Seat Inner Belt Assembly LH) |
(b) Connect the cable to the negative (-) battery terminal.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
R69-4 (LSP+) - Body ground |
Ignition switch ON |
Below 1 V |
|
R69-3 (LSP-) - Body ground |
Ignition switch ON |
Below 1 V |
(e) Turn the ignition switch off.
(f) 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.
(g) Using a service wire, connect terminals 25 (LSP+) and 26 (LSP-) of connector B.
NOTICE:
Do not forcibly insert the service wire into the terminals of the connector when connecting the wire.
(h) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
R69-4 (LSP+) - R69-3 (LSP-) |
Always |
Below 1 Ω |
(i) Disconnect the service wire from connector B.
(j) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
R69-4 (LSP+) - R69-3 (LSP-) |
Always |
1 MΩ or higher |
|
R69-4 (LSP+) - Body ground |
Always |
1 MΩ or higher |
|
R69-3 (LSP-) - Body ground |
Always |
1 MΩ or higher |
| OK |
|
| NG |
|
REPLACE FLOOR WIRE |
|
|