- The center airbag sensor receives an open signal or short to ground in the RSCA OFF indicator circuit.
- RSCA OFF indicator malfunction
- Center airbag sensor malfunction
| Last Modified: 11-29-2007 | 1.6 C | |
| Service Category: Vehicle Interior | Section: Supplemental Restraint Systems | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000002ZQG008X |
| Title: SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
DTC |
B1661/44 |
Roll Over Cut Off Indicator Malfunction |
DESCRIPTION
The RSCA (Roll Sensing of Curtain shield Airbags) OFF switch is a mechanism that operates both right and left side of the curtain shield airbag and the front seat outer belt when the center airbag sensor detects a roll-over.
The RSCA OFF indicator is installed in the combination meter.
If the RSCA OFF switch is operated, the indicator comes on to inform the driver that the roll-over detection system is not working.
The initial setting of the roll-over detection system is on. It automatically operates every time the ignition switch is turned ON.
|
DTC Code |
Detection Condition |
Trouble Area |
|---|---|---|
|
B1661/44 |
|
|
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK COMBINATION METER (SOURCE VOLTAGE) |
|
(a) Turn the ignition switch off. |
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Remove the combination meter with connect connector.
(d) Disconnect the connector from the center airbag sensor.
(e) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(f) Turn the ignition switch to ON.
(g) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
H37-6 (SW) - Body ground |
Ignition switch ON |
11 to 14 V |
|
|
2. |
CHECK INSTRUMENT PANEL WIRE (CENTER AIRBAG SENSOR - COMBINATION METER AND BODY GROUND) |
|
(a) Turn the ignition switch off. |
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Disconnect the connector from the center airbag sensor and combination meter.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
H37-6 (SW) - H56-20 (RMIL) |
Always |
Below 1 Ω |
|
H37-6 (SW) - Body ground |
Always |
1 MΩ or higher |
(e) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(f) Turn the ignition switch to ON.
(g) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
H37-6 (SW) - Body ground |
Ignition switch ON |
Below 1 V |
|
|
3. |
INSPECT RSCA OFF SWITCH |
|
(a) Turn the ignition switch off. |
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Remove the RSCA OFF switch
.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
4 (SW) - 1 (E) |
RSCA OFF switch is in on position |
Below 1 Ω |
|
4 (SW) - 1 (E) |
RSCA OFF switch is in off position |
1 MΩ or higher |
|
|
4. |
CHECK INSTRUMENT PANEL WIRE (CENTER AIRBAG SENSOR - RSCA OFF SWITCH AND BODY GROUND) |
|
(a) Turn the ignition switch off. |
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Disconnect the connector from the center airbag sensor and RSCA OFF switch.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
H56-19 (RMSW) - H46-4 (SW) |
Always |
Below 1 Ω |
|
H46-4 (SW) - Body ground |
Always |
1 MΩ or higher |
|
H46-1 (E) - Body ground |
Always |
Below 1 Ω |
(e) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(f) Turn the ignition switch to ON.
(g) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
H46-4 (SW) - Body ground |
Ignition switch ON |
Below 1 V |
|
H46-1 (E) - Body ground |
|
|
|