B1823
SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM: B1820/55-B1823/55: Short in Front Driver Side - Side Squib Circuit
DTC B1820/55 - Short in Front Driver Side - Side Squib Circuit
DTC B1821/55 - Open in Front Driver Side - Side Squib Circuit
DTC B1822/55 - Short to GND in Front Driver Side - Side Squib Circuit
DTC B1823/55 - Short to B+ in Front Driver Side - Side Squib Circuit
DESCRIPTION
The front driver side - side squib circuit consists of the center airbag sensor assembly and the front seat side airbag assembly LH.
The circuit instructs the SRS to deploy when deployment conditions are met.
These DTCs are recorded when a malfunction is detected in the front driver side - side squib circuit.
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
- Perform the simulation method by selecting the "check mode" (signal check) with Techstream Check Mode Procedure.
- 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 Diagnosis System.
PROCEDURE
1. CHECK CONNECTORS
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Check that the connectors are properly connected to the front seat side airbag assembly LH and center airbag sensor assembly.
OK:
The connectors are properly connected.
HINT: If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.
(d) Disconnect the connectors from the front seat side airbag assembly LH and center airbag sensor assembly.
(e) Check that the connectors of the terminals are not damaged.
OK:
The terminals are not deformed or damaged.
NG -- REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
2. CHECK FRONT SEAT SIDE AIRBAG ASSEMBLY LH (FRONT DRIVER SIDE - SIDE SQUIB)
(a) Connect the connector to the center airbag sensor assembly.
(b) Connect SST (resistance 2.1 Ohms) to connector C.
CAUTION: Never connect the tester to the front seat side airbag assembly LH (front driver side - side squib) for measurement, as this may lead to a serious injury due to airbag deployment.
NOTICE:
- Do not forcibly insert SST into the terminals of the connector when connecting.
- Insert SST straight into the terminals of the connector.
SST: 09843-18061
(c) Connect the negative (-) terminal cable to the battery.
(d) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(e) Clear the DTCs stored in the memory DTC Check / Clear.
(f) Turn the ignition switch off.
(g) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(h) Check for DTCs DTC Check / Clear.
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.
Result
C -- REPLACE FRONT SEAT ASSEMBLY LH
B -- REPLACE FRONT SEAT ASSEMBLY LH
A -- Continue to next step.
3. CHECK FLOOR WIRE NO. 2 (FRONT DRIVER SIDE - SIDE SQUIB CIRCUIT)
(a) Turn the ignition switch off.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect SST from connector C.
(d) Disconnect the floor wire No. 2 from the center airbag sensor assembly.
(e) Check for a short to B+ in the circuit.
(1) Connect the negative (-) terminal cable to the battery.
(2) Turn the ignition switch on (IG).
(3) Measure the voltage according to the value(s) in the table below.
Standard voltage:
(f) Check for an open in the circuit.
(1) Turn the ignition switch off.
(2) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(3) Measure the resistance according to the value(s) in the table below.
Standard resistance:
(g) Check for a short to ground in the circuit.
(1) Measure the resistance according to the value(s) in the table below.
Standard resistance:
(h) Check for a short in the circuit.
(1) Release the activation prevention mechanism built into connector B Diagnosis System.
(2) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPLACE FLOOR WIRE NO. 2
OK -- Continue to next step.
4. CHECK CENTER AIRBAG SENSOR ASSEMBLY
(a) Restore the released activation prevention mechanism of connector B to the original condition.
(b) Connect the connectors to the front seat side airbag assembly LH and the center airbag sensor assembly.
(c) Connect the negative (-) terminal cable to the battery.
(d) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(e) Clear the DTCs stored in the memory DTC Check / Clear.
(f) Turn the ignition switch off.
(g) Turn the ignition switch on (IG), and wait for at least 60 seconds.
(h) Check for DTCs DTC Check / Clear.
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.
NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
OK -- USE SIMULATION METHOD TO CHECK