DESCRIPTION
This circuit detects the airbag cut off switch cylinder sub-assembly status.
The passenger airbag ON/OFF indicator comes on to inform the driver of the instrument panel passenger without door airbag assembly status (activated or deactivated).
HINT:
Approximately 6 seconds after the ignition switch is turned ON, the passenger airbag ON/OFF indicator will indicate ON/OFF depending on the following conditions.
Airbag Cut Off Switch Cylinder Sub-assembly |
Passenger Airbag ON/OFF Indicator |
SRS Warning Light |
|
---|---|---|---|
ON Indicator |
OFF Indicator |
||
ON |
ON |
OFF |
OFF |
OFF |
OFF |
ON |
OFF |
Switch failure |
OFF |
ON |
ON |
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.
Click here
HINT:
Terminals F70-11 (MSW+) and F70-12 (MSW-) of the instrument panel wire in this circuit have an activation prevention mechanism.
This mechanism can be used to check for an open circuit in the wire harness. When performing other checks (check for short, short to ground or short to B+), this mechanism should be released.
PROCEDURE
1. |
CHECK SRS WARNING LIGHT |
(a) Turn the ignition switch ON, and check the SRS warning light condition.
OK:
After the primary check period, the SRS warning light goes off.
HINT:
NG |
GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
2. |
CHECK 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 and airbag cut off switch cylinder sub-assembly.
OK:
The connectors are properly connected.
HINT:
If the connectors are not properly connected, reconnect the connectors and proceed to the next inspection.
(d) Disconnect the connectors from the airbag sensor assembly and airbag cut off switch cylinder sub-assembly.
(e) Check that the terminals of the connectors are not deformed or damaged.
OK:
The terminals are not deformed or damaged.
(f) Check that the short springs of the activation prevention mechanism of the instrument panel wire connector are not deformed or damaged.
OK:
The short springs are not deformed or damaged.
NG |
REPLACE INSTRUMENT PANEL WIRE |
|
3. |
CHECK INSTRUMENT PANEL WIRE (OPEN) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG |
REPLACE INSTRUMENT PANEL WIRE |
|
4. |
CHECK INSTRUMENT PANEL WIRE (SHORT) |
(a) Release the activation prevention mechanism built into connector B. Click here |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F64-2 (PMC+) - F64-1 (PMC-) |
Always |
1 MΩ or higher |
NG |
REPLACE INSTRUMENT PANEL WIRE |
|
5. |
CHECK INSTRUMENT PANEL WIRE (SHORT TO B+) |
(a) Connect the cable to the negative (-) battery terminal. |
|
(b) Turn the ignition switch ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
F64-2 (PMC+) - Body ground |
Ignition switch ON |
Below 1 V |
F64-1 (PMC-) - Body ground |
Ignition switch ON |
Below 1 V |
(d) Turn the ignition switch off.
(e) 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.
NG |
REPLACE INSTRUMENT PANEL WIRE |
|
6. |
CHECK INSTRUMENT PANEL WIRE (SHORT TO GROUND) |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
(b) Restore the released activation prevention mechanism of connector B to the original condition.
NG |
REPLACE INSTRUMENT PANEL WIRE |
|
7. |
CHECK AIRBAG CUT OFF SWITCH CYLINDER SUB-ASSEMBLY |
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK |
REPLACE AIRBAG SENSOR ASSEMBLY |
NG |
REPLACE AIRBAG CUT OFF SWITCH CYLINDER SUB-ASSEMBLY |
Toyota CH-R Service Manual > Lighting (ext): Headlight Ecu
Components
COMPONENTS
ILLUSTRATION
*1
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*2
HEADLIGHT GASKET
●
Non-reusable part
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-
Installation
INSTALLATION
CAUTION / NOTICE / HINT
HINT:
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