DESCRIPTION
The curtain shield squib LH circuit consists of the center airbag sensor assembly and curtain shield airbag assembly LH.
The center airbag sensor assembly uses this circuit to deploy the airbag when deployment conditions are met.
These DTCs are stored when a malfunction is detected in the curtain shield squib LH circuit.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
B1835/58 |
|
|
B1836/58 |
|
|
B1837/58 |
|
|
B1838/58 |
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
HINT:
PROCEDURE
1. |
CHECK 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 curtain shield 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 curtain shield airbag assembly LH and center airbag sensor assembly.
(e) Check that the terminals of the connectors are not damaged.
OK:
The terminals are not deformed or damaged.
(f) Check that the floor wire connector (on the curtain shield airbag assembly LH side) is not damaged.
OK:
The lock button is not disengaged, and the claw of the lock is not deformed or damaged.
(g) Check that the short spring for the floor wire with the activation prevention mechanism is not deformed or damaged.
OK:
The short spring is not deformed or damaged.
Text in Illustration
*1 |
Curtain Shield Squib LH |
*2 |
Center Airbag Sensor Assembly |
*3 |
Floor Wire |
NG |
REPLACE FLOOR WIRE |
|
2. |
CHECK CURTAIN SHIELD AIRBAG ASSEMBLY LH (CURTAIN SHIELD LH SQUIB) |
(a) Connect the connector to the center airbag sensor assembly. |
|
(b) Connect SST (resistance 2.1 Ω) to connector C.
CAUTION:
Never connect an electrical tester to the curtain shield airbag assembly LH (curtain shield squib LH) for measurement, as this may lead to a serious injury due to airbag deployment.
NOTICE:
SST: 09843-18061
(c) Connect the cable to the negative (-) battery terminal.
(d) Turn the ignition switch to ON, and wait for at least 60 seconds.
(e) Clear the DTCs stored in memory (See page ).
(f) Turn the ignition switch off.
(g) Turn the ignition switch to ON, and wait for at least 60 seconds.
(h) Check for DTCs (See page ).
OK:
DTC B1835, B1836, B1837, B1838 or 58 is not output.
Text in Illustration
*1 |
Curtain Shield Squib LH |
*2 |
Center Airbag Sensor Assembly |
*3 |
Front view of wire harness connector (to Curtain Shield Airbag Assembly LH) |
*4 |
Connector C |
HINT:
Codes other than DTCs B1835, B1836, B1837, B1838 and 58 may be output at this time, but they are not related to this check.
OK |
REPLACE CURTAIN SHIELD AIRBAG ASSEMBLY LH |
|
3. |
CHECK FLOOR WIRE (CURTAIN SHIELD SQUIB LH CIRCUIT) |
(a) Turn the ignition switch off. |
|
(b) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(c) Disconnect SST from connector C.
(d) Disconnect the floor wire from the center airbag sensor assembly.
(e) Check for a short to B+ in the circuit.
(1) Connect the cable to the negative (-) battery terminal.
(2) Turn the ignition switch to ON.
(3) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
L7-1 (ICL+) - Body ground |
Ignition switch ON |
Below 1 V |
L7-2 (ICL-) - Body ground |
Ignition switch ON |
Below 1 V |
(f) Check for an open in the circuit.
(1) Turn the ignition switch off.
(2) Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
L7-1 (ICL+) - L7-2 (ICL-) |
Always |
Below 1 Ω |
(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:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
L7-1 (ICL+) - Body ground |
Always |
1 MΩ or higher |
L7-2 (ICL-) - Body ground |
Always |
1 MΩ or higher |
(h) Check for a short in the circuit.
(1) Release the activation prevention mechanism built into connector B (See page ).
(2) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
L7-1 (ICL+) - L7-2 (ICL-) |
Always |
1 MΩ or higher |
*1 |
Curtain Shield Squib LH |
*2 |
Center Airbag Sensor Assembly |
*3 |
Floor Wire |
*4 |
Front view of wire harness connector (to Curtain Shield Airbag Assembly LH) |
*5 |
Connector C |
NG |
REPLACE FLOOR WIRE |
|
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 curtain shield airbag assembly LH and center airbag sensor assembly.
(c) Connect the cable to the negative (-) battery terminal.
(d) Turn the ignition switch to ON, and wait for at least 60 seconds.
(e) Clear the DTCs stored in memory (See page ).
(f) Turn the ignition switch off.
(g) Turn the ignition switch to ON, and wait for at least 60 seconds.
(h) Check for DTCs (See page ).
OK:
DTC B1835, B1836, B1837, B1838 or 58 is not output.
Text in Illustration
*1 |
Curtain Shield Squib LH |
*2 |
Center Airbag Sensor Assembly |
HINT:
Codes other than DTCs B1835, B1836, B1837, B1838 and 58 may be output at this time, but they are not related to this check.
OK |
USE SIMULATION METHOD TO CHECK |
NG |
REPLACE CENTER AIRBAG SENSOR ASSEMBLY |
Control Module Communication Bus OFF (U0073/86,U0100/85,U0129/83)
DESCRIPTION
The AWD control ECU inputs the signals sent from the ECM and skid control
ECU via the CAN communication system.
When DTCs indicating a CAN communication system malfunction are output,
repair the CAN communication system before r ...
Front Passenger Side Door ECU Communication Stop (B2322)
DESCRIPTION
This DTC is stored when LIN communication between the power window regulator
motor assembly (for front passenger side) and main body ECU (driver side junction
block assembly) stops for more than 10 seconds.
DTC No.
DTC D ...
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT COOLING FAN MOTOR
(a) Check that the motor operates smoothly when the battery is connected
to the cooling fan motor connector.
Text in Illustration
*1
Componen ...