- The center airbag sensor receives an open circuit signal, a short circuit to ground signal or a short circuit to B+ signal in the passenger airbag ON/OFF indicator circuit for 2 seconds.
- Passenger airbag ON/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: RM000001W2801YX |
| Title: SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
DTC |
B1660/43 |
Passenger Airbag ON/OFF Indicator Circuit Malfunction |
DESCRIPTION
The passenger airbag ON/OFF indicator circuit consists of the center airbag sensor and the passenger airbag ON/OFF indicator.
The passenger airbag ON/OFF indicator indicates the operation condition of the front passenger airbag, front seat side airbag RH and front seat outer belt RH.
DTC B1660/43 is stored when a malfunction is detected in the passenger airbag ON/OFF indicator circuit.
|
DTC Code |
Detection Condition |
Trouble Area |
|---|---|---|
|
B1660/43 |
When one of following conditions is met: |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION |
(a) Turn the ignition switch to ON.
(b) Check the passenger airbag ON/OFF indicator operation.
HINT:
Refer to the normal condition of the passenger airbag ON/OFF indicator
.
Result
|
ON/OFF Indicator Illumination |
Proceed to |
|---|---|
|
Always ON |
A |
|
OFF |
B |
|
|
2. |
CHECK CONNECTION OF CONNECTORS |
(a) Turn the ignition switch off.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Check that the connectors are properly connected to the center airbag sensor and the integration control and panel.
OK:
The connectors are properly connected.
|
|
3. |
CHECK CONNECTORS |
(a) Disconnect the connectors from the center airbag sensor and the telltale light.
(b) Check that the connectors (on the center airbag sensor side and integration control and panel side) are not damaged
.
OK:
The connectors are not deformed or damaged.
|
|
4. |
CHECK PASSENGER AIRBAG ON/OFF INDICATOR |
|
(a) Connect the connector to the integration control and panel. |
(b) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(c) Turn the ignition switch to ON.
(d) Check the passenger airbag ON/OFF indicator operation.
OK:
The passenger airbag ON/OFF indicator does not come on.
|
|
5. |
CHECK CENTER AIRBAG SENSOR |
|
(a) Connect the connector to the center airbag sensor. |
(b) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(c) Turn the ignition switch to ON, and wait for at least 60 seconds.
(d) Clear the 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
.
OK:
DTC B1660/43 is not output.
HINT:
Codes other than DTC B1660/43 may be output at this time, but they are not related to this check.
|
|
6. |
CHECK INSTRUMENT PANEL WIRE (CENTER AIRBAG SENSOR - INTEGRATION CONTROL AND PANEL) |
(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 integration control and panel.
(d) Using a service wire, connect terminals 23 (PAON) and 17 (P-AB) of connector B.
NOTICE:
Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
H45-5 (PAON) - H45-13 (P-AB) |
Always |
Below 1 Ω |
(f) Disconnect the service wire from connector B.
(g) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
H45-5 (PAON) - H45-13 (P-AB) |
Always |
1 MΩ or higher |
|
H45-5 (PAON) - Body ground |
Always |
1 MΩ or higher |
|
H45-13 (P-AB) - Body ground |
Always |
1 MΩ or higher |
(h) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(i) Turn the ignition switch to ON.
(j) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
H45-5 (PAON) - Body ground |
Ignition switch ON |
Below 1 V |
|
H45-13 (P-AB) - Body ground |
Ignition switch ON |
Below 1 V |
|
|
7. |
CHECK CONNECTION OF CONNECTORS |
(a) Turn the ignition switch off.
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Check that the connectors are properly connected to the center airbag sensor and the integration control and panel.
OK:
The connectors are properly connected.
|
|
8. |
CHECK CONNECTORS |
(a) Disconnect the connectors from the center airbag sensor and the telltale light.
(b) Check that the connectors (on the center airbag sensor side and integration control and panel side) are not damaged
.
OK:
The connectors are not deformed or damaged.
|
|
9. |
CHECK INSTRUMENT PANEL WIRE (CENTER AIRBAG SENSOR - INTEGRATION CONTROL AND PANEL) |
(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 integration control and panel.
(d) Using a service wire, connect terminals 23 (PAON) and 17 (P-AB) of connector B.
NOTICE:
Do not forcibly insert a service wire into the terminals of the connector when connecting the wire.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
H45-5 (PAON) - H45-13 (P-AB) |
Always |
Below 1 Ω |
(f) Disconnect the service wire from connector B.
(g) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
H45-5 (PAON) - H45-13 (P-AB) |
Always |
1 MΩ or higher |
|
H45-5 (PAON) - Body ground |
Always |
1 MΩ or higher |
|
H45-13 (P-AB) - Body ground |
Always |
1 MΩ or higher |
(h) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(i) Turn the ignition switch to ON.
(j) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
H45-5 (PAON) - Body ground |
Ignition switch ON |
Below 1 V |
|
H45-13 (P-AB) - Body ground |
Ignition switch ON |
Below 1 V |
|
|
10. |
CHECK PASSENGER AIRBAG ON/OFF INDICATOR (SOURCE VOLTAGE) |
|
(a) Connect the connectors to the center airbag sensor. |
(b) Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
H45-16 (IG+) - Body ground |
Ignition switch ON |
11 to 14 V |
|
|
11. |
CHECK PASSENGER AIRBAG ON/OFF INDICATOR |
|
(a) Turn the ignition switch off. |
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Connect the connector to the integration control and panel.
(d) Disconnect the connectors 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) Check the indicator according to the value(s) in the table below.
OK:
|
Connection |
Switch Condition |
Passenger airbag ON/OFF indicator |
|---|---|---|
|
H56-23 (PAON) - Body ground |
Ignition switch ON |
"ON" comes on |
|
H56-17 (P-AB) - Body ground |
Ignition switch ON |
"OFF" comes on |
|
|
12. |
CHECK CENTER AIRBAG SENSOR |
|
(a) Turn the ignition switch off. |
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Connect the connectors to the center airbag sensor.
(d) Connect the cable to the negative (-) battery terminal and wait for at least 2 seconds.
(e) Turn the ignition switch to ON, and wait for at least 60 seconds.
(f) Clear the DTCs
.
(g) Turn the ignition switch off.
(h) Turn the ignition switch to ON, and wait for at least 60 seconds.
(i) Check for DTCs
.
OK:
DTC B1660/43 is not output.
HINT:
Codes other than DTC B1660/43 may be output at this time, but they are not related to this check.
|
|
|