B1828
SUPPLEMENTAL RESTRAINT SYSTEM: AIRBAG SYSTEM:
DTC B1825/56 - Short in Front Passenger Side - Side Squib Circuit
DTC B1826/56 - Open in Front Passenger Side - Side Squib Circuit
DTC B1827/56 - Short to GND in Front Passenger Side - Side Squib Circuit
DTC B1828/56 - Short to B+ in Front Passenger Side - Side Squib Circuit
DESCRIPTION
The side squib (front passenger side) circuit consists of the center airbag sensor and the front seat with adjuster frame RH (side squib (front passenger side)).
This circuit instructs the SRS to deploy when deployment conditions are met.
These DTCs are recorded when a malfunction is detected in the side squib (front passenger side) circuit.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK FOR DTC
(a) Proceed to each step according to DTC readings.
(1) If using the intelligent tester (read the 5-digit of DTC):
Using the intelligent tester, check for DTCs DTC Check / Clear.
Result
(2) If not using the intelligent tester (read the 2-digit of DTC):
Check for DTCs DTC Check / Clear.
Result
E -- CHECK NO. 2 FLOOR WIRE (SIDE SQUIB (FRONT PASSENGER SIDE) CIRCUIT)
D -- CHECK NO. 2 FLOOR WIRE (TO B+)
C -- CHECK NO. 2 FLOOR WIRE (TO GROUND)
B -- CHECK NO. 2 FLOOR WIRE (OPEN)
A -- Continue to next step.
2. CHECK NO. 2 FLOOR WIRE (SHORT)
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the center airbag sensor.
(d) Disconnect the connector from the front seat airbag RH (side squib (front passenger side)).
(e) Release the activation prevention mechanism built into connector "B" Diagnosis System.
(f) Measure the resistance according to the value(s) in the table below.
Standard resistance:
OK -- CHECK CENTER AIRBAG SENSOR ASSEMBLY
NG -- REPAIR OR REPLACE NO. 2 FLOOR WIRE
3. CHECK NO. 2 FLOOR WIRE (OPEN)
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the center airbag sensor.
(d) Disconnect the connector from the front seat airbag RH (side squib (front passenger side)).
(e) Measure the resistance according to the value(s) in the table below.
Standard resistance:
OK -- CHECK CENTER AIRBAG SENSOR ASSEMBLY
NG -- REPAIR OR REPLACE NO. 2 FLOOR WIRE
4. CHECK NO. 2 FLOOR WIRE (TO GROUND)
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the center airbag sensor.
(d) Disconnect the connector from the front seat airbag RH (side squib (front passenger side)).
(e) Measure the resistance according to the value(s) in the table below.
Standard resistance:
OK -- CHECK CENTER AIRBAG SENSOR ASSEMBLY
NG -- REPAIR OR REPLACE NO. 2 FLOOR WIRE
5. CHECK NO. 2 FLOOR WIRE (TO B+)
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the center airbag sensor.
(d) Disconnect the connector from the front seat airbag RH (side squib (front passenger side)).
(e) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(f) Turn the ignition switch to the ON position.
(g) Measure the voltage according to the value(s) in the table below.
Standard voltage:
(h) Before proceeding to the next step, perform the following procedures.
(1) Turn the ignition switch to the LOCK position.
(2) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
OK -- CHECK CENTER AIRBAG SENSOR ASSEMBLY
NG -- REPAIR OR REPLACE NO. 2 FLOOR WIRE
6. CHECK NO. 2 FLOOR WIRE (SIDE SQUIB (FRONT PASSENGER SIDE) CIRCUIT)
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the center airbag sensor.
(d) Disconnect the connector from the front seat airbag RH (side squib (front passenger side)).
(e) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(f) Turn the ignition switch to the ON position.
(g) Measure the voltage according to the value(s) in the table below.
Standard voltage:
(h) Turn the ignition switch to the LOCK position.
(i) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(j) Measure the resistance according to the value(s) in the table below.
Standard resistance:
(k) Release the activation prevention mechanism built into connector "B" Diagnosis System.
(l) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE NO. 2 FLOOR WIRE
OK -- Continue to next step.
7. REPLACE FRONT SEAT WITH ADJUSTER FRAME ASSEMBLY RH (SIDE SQUIB (FRONT PASSENGER SIDE))
(a) Replace the front seat with adjuster frame RH (side squib (Front passenger side)) and connect the connector Diagnosis System.
HINT: Perform the inspection using parts from a normal vehicle if possible.
(b) Connect the connectors to the center airbag sensor.
(c) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(d) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(e) Clear the DTCs stored in memory DTC Check / Clear.
(f) Turn the ignition switch to the LOCK position.
(g) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(h) Check for DTCs DTC Check / Clear.
OK:
DTC 56 is not output.
HINT: Codes other than code 56 may be output at this time, but they are not related to this check.
NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
OK -- END
8. 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 center airbag sensor.
(c) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(d) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(e) Clear the DTCs stored in memory DTC Check / Clear.
(f) Turn the ignition switch to the LOCK position.
(g) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(h) Check for DTCs DTC Check / Clear.
OK:
DTC B1825 is not output.
HINT: Codes other than code B1825 may be output at this time, but they are not related to this check.
OK -- CHECK FRONT SEAT WITH ADJUSTER FRAME ASSEMBLY RH (SIDE SQUIB (FRONT PASSENGER SIDE))
NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
9. CHECK CENTER AIRBAG SENSOR ASSEMBLY
(a) Connect the connectors to the center airbag sensor.
(b) Using a service wire, connect S12-1 (SFP+) and S12-2 (SFP-) of connector "C".
NOTE: Do not forcibly insert a service wire into the terminals of the connector when connecting.
(c) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(d) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(e) Clear the DTCs stored in memory DTC Check / Clear.
(f) Turn the ignition switch to the LOCK position.
(g) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(h) Check for DTCs DTC Check / Clear.
OK:
DTC B1826, B1827 or B1828 is not output.
HINT: Codes other than code B1826, B1827 or B1828 may be output at this time, but they are not related to this check.
(i) Before proceeding to the next step, perform the following procedures.
(1) Disconnect the service wire from connector "C".
NG -- REPLACE CENTER AIRBAG SENSOR ASSEMBLY
OK -- Continue to next step.
10. CHECK FRONT SEAT WITH ADJUSTER FRAME ASSEMBLY RH (SIDE SQUIB (FRONT PASSENGER SIDE))
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
(c) Connect the connector to the front seat with adjuster frame RH (side squib (front passenger side)).
(d) Connect the negative (-) terminal cable to the battery, and wait for at least 2 seconds.
(e) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(f) Clear the DTCs stored in memory DTC Check / Clear.
(g) Turn the ignition switch to the LOCK position.
(h) Turn the ignition switch to the ON position, and wait for at least 60 seconds.
(i) Check for DTCs DTC Check / Clear.
OK:
DTC B1825, B1826, B1827 or B1828 is not output.
HINT: Codes other than code B1825, B1826, B1827 or B1828 may be output at this time, but they are not related to this check.
NG -- REPLACE FRONT SEAT WITH ADJUSTER FRAME ASSEMBLY RH
OK -- PERFORM SYMPTOM SIMULATION