CHECK FRONT SEAT SIDE AIRBAG ASSEMBLY (DRIVER SIDE - SIDE SQUIB)
CHECK FLOOR WIRE NO. 2 (DRIVER SIDE - SIDE SQUIB CIRCUIT)
CHECK CENTER AIRBAG SENSOR ASSEMBLY
DTC B1820/55 Short in Driver Side - Side Squib Circuit |
DTC B1821/55 Open in Driver Side - Side Squib Circuit |
DTC B1822/55 Short to GND in Driver Side - Side Squib Circuit |
DTC B1823/55 Short to B+ in Driver Side - Side Squib Circuit |
DESCRIPTION
The driver side - side squib circuit consists of the center airbag sensor assembly and the front seat side airbag assembly (driver side).This circuit instructs the SRS to deploy when deployment conditions are met.
These DTCs are recorded when a malfunction is detected in the driver side - side squib circuit.
| DTC No. | DTC Detection Condition | Trouble Area |
| B1820/55 |
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| B1821/55 |
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| B1822/55 |
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| B1823/55 |
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WIRING DIAGRAM
INSPECTION PROCEDURE
- HINT:
- Perform the simulation method by selecting the "check mode" (signal check) with the intelligent tester (Click here).
- After selecting the "check mode" (signal check), perform the simulation method by wiggling each connector of the airbag system or driving the vehicle on a city or rough road (Click here).
| 1.CHECK FRONT SEAT SIDE AIRBAG ASSEMBLY (DRIVER SIDE - SIDE SQUIB) |
Turn the engine switch off.
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Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
Disconnect the connector from the front seat side airbag assembly (driver side).
Connect the black wire side of SST (resistance 2.1 Ω) to connector "C".
- CAUTION:
- Never connect a tester to the front seat side airbag assembly (driver side - side squib) for measurement, as this may lead to a serious injury due to airbag deployment.
- NOTICE:
- Do not forcibly insert the SST into the terminals of the connector when connecting.
- Insert straight the SST into the terminals of the connector.
Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
Turn the engine switch on (IG), and wait for at least 60 seconds.
Clear the DTCs stored in the memory (Click here).
Turn the engine switch off.
Turn the engine switch on (IG), and wait for at least 60 seconds.
Check for DTCs (Click here).
- OK:
- DTC B1820, B1821, B1822, B1823 or 55 is not output.
- HINT:
- Codes other than DTC B1820, B1821, B1822, B1823 and 55 may be output at this time, but they are not related to this check.
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| OK | |
| 2.CHECK FLOOR WIRE NO. 2 (DRIVER SIDE - SIDE SQUIB CIRCUIT) |
Turn the engine switch off.
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Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
Disconnect the SST from connector "C".
Disconnect the connectors from the center airbag sensor assembly.
Check for a short to B+ in the circuit.
Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
Turn the engine switch on (IG).
Measure the voltage according to the value(s) in the table below.
- Standard voltage:
- LHD:
Tester connection Condition Specified condition Qd1-1 (SFL+) - Body ground Engine switch on (IG) Below 1 V Qd1-2 (SFL-) - Body ground Engine switch on (IG) Below 1 V - RHD:
Tester connection Condition Specified condition Pc1-1 (SFR+) - Body ground Engine switch on (IG) Below 1 V Pc1-2 (SFR-) - Body ground Engine switch on (IG) Below 1 V
Check for an open in the circuit.
Turn the engine switch off.
Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
- LHD:
Tester connection Condition Specified condition Qd1-1 (SFL+) - Qd1-2 (SFL-) Always Below 1 Ω - RHD:
Tester connection Condition Specified condition Pc1-1 (SFR+) - Pc1-2 (SFR-) Always Below 1 Ω
Check for a short to ground in the circuit.
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
- LHD:
Tester connection Condition Specified condition Qd1-1 (SFL+) - Body ground Always 1 MΩ or higher Qd1-2 (SFL-) - Body ground Always 1 MΩ or higher - RHD:
Tester connection Condition Specified condition Pc1-1 (SFR+) - Body ground Always 1 MΩ or higher Pc1-2 (SFR-) - Body ground Always 1 MΩ or higher
Check for a short in the circuit.
Release the activation prevention mechanism built into connector "B" (Click here).
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
- LHD:
Tester connection Condition Specified condition Qd1-1 (SFL+) - Qd1-2 (SFL-) Always 1 MΩ or higher - RHD:
Tester connection Condition Specified condition Pc1-1 (SFR+) - Pc1-2 (SFR-) Always 1 MΩ or higher
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| OK | |
| 3.CHECK CENTER AIRBAG SENSOR ASSEMBLY |
Connect the connectors to the front seat side airbag assembly (driver side) and the center airbag sensor assembly.
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Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
Turn the engine switch on (IG), and wait for at least 60 seconds.
Clear the DTCs stored in the memory (Click here).
Turn the engine switch off.
Turn the engine switch on (IG), and wait for at least 60 seconds.
Check for DTCs (Click here).
- OK:
- DTC B1820, B1821, B1822, B1823 or 55 is not output.
- HINT:
- Codes other than DTC B1820, B1821, B1822, B1823 and 55 may be output at this time, but they are not related to this check.
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| OK | ||
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