AIRBAG SYSTEM (DIAGNOSTICS) > Diagnostic Chart with Trouble Code
DTC B1826 OPEN IN SIDE AIRBAG LH
Diagnosis start condition:
Ignition voltage is 10 V to 16 V.
DTC detecting condition:
• Side airbag harness (LH) circuit is open.
• Side airbag module (LH) is faulty.
• Airbag control module is faulty.
CAUTION:
Before performing diagnosis, refer to “CAUTION” in “General Description”. General Description > CAUTION">
Wiring diagram:
Airbag system Airbag System > WIRING DIAGRAM">
STEP | CHECK | YES | NO |
1.CHECK POOR CONTACT OF CONNECTORS.
Check for poor contact of the connectors between the airbag control module, side airbag module LH and the side airbag sensor LH.
Is there poor contact?
Replace the airbag rear harness along with body harness.
Diagnostic Chart with Trouble Code > DTC B1826 OPEN IN SIDE AIRBAG LH">Go to Step 2.
2.CHECK SIDE AIRBAG MODULE.
1) Turn the ignition switch to OFF, disconnect the battery ground cable, and wait for 60 seconds or more.
2) Disconnect the connector (AB19) from the side airbag module (LH), and connect the connector (1AJ) in test harness AJ to the connector (AB19).
3) Connect the airbag resistor to the test harness AJ connector (3AJ).
4) Connect the battery ground terminal and turn the ignition switch to ON.
Does the airbag warning light illuminate for 6 seconds and go off?
Replace the side airbag module (LH). Side Airbag Module > REMOVAL">
Diagnostic Chart with Trouble Code > DTC B1826 OPEN IN SIDE AIRBAG LH">Go to Step 3.
3.CHECK AIRBAG REAR HARNESS (SIDE AIRBAG MODULE HARNESS LH).
1) Turn the ignition switch to OFF, disconnect the battery ground cable, and wait for 60 seconds or more.
2) Disconnect the connector (AB21) from seat belt pretensioner (LH).
3) Disconnect the connector (AB31) from curtain airbag module (LH).
4) Disconnect the airbag resistor from test harness AJ.
5) Disconnect the connectors (AB6, AB17, AB18) from airbag control module.
6) Connect the connector (1AG) in the test harness AG to the connectors (AB6, AB17, AB18).
7) Measure the resistance between connector (4AG) or (5AG) in the test harness AG and connector (3AJ) in the test harness AJ.
Connector & terminal
(5AG) No. 1 — (3AJ) No. 2:
(5AG) No. 3 — (3AJ) No. 1:
Is the resistance less than 10 ??
Diagnostic Chart with Trouble Code > DTC B1826 OPEN IN SIDE AIRBAG LH">Go to Step 4.
Replace the airbag rear harness along with body harness.
4.CHECK AIRBAG CONTROL MODULE.
1) Connect all connectors.
2) Clear the memory. Clear Memory Mode">
3) Perform the Inspection Mode. Inspection Mode">
4) Read the DTC. (Current malfunction) Read Diagnostic Trouble Code (DTC)">
Is DTC B1826 displayed?
Replace the airbag control module. Airbag Control Module">
Diagnostic Chart with Trouble Code > DTC B1826 OPEN IN SIDE AIRBAG LH">Go to Step 5.
5.CHECK FOR ANY OTHER DTC ON DISPLAY.
Is any other DTC displayed?
Check DTC using “List of Diagnostic Trouble Code (DTC)”. List of Diagnostic Trouble Code (DTC)">
Finish the diagnosis.
Installation
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