AIRBAG SYSTEM (DIAGNOSTICS) > Airbag Warning Light Failure

DETECTING CONDITION:

• Airbag warning light is faulty.

• Airbag control module to airbag warning light circuit is shorted or open.

• Grounding circuit is faulty.

• Airbag control module is faulty.

• Connection of (AB1) and (B31) is improper.

• Connection of (AB6, AB17, AB18) to airbag control module is improper

CAUTION:

• Before diagnosing the airbag system, be sure to turn the ignition switch to OFF, disconnect the ground terminal from the battery, and wait for 20 seconds or more before starting to work.

• When replacing the airbag module, seat belt pretensioner, lap seat belt pretensioner, roll connector, control module and sensor, reconnect each part and check that the warning light operates properly.

• When inspecting the airbag main harness, disconnect the airbag module connectors of the driver’s and passenger’s seats for safety.

• When inspecting the airbag rear harness, disconnect the side airbag module connector, curtain airbag module connector, seat belt pretensioner and lap seat belt pretensioner connector for safety reasons.

WIRING DIAGRAM:

STEP	CHECK	YES	NO
1.READ DTC. Read the DTC.	Is DTC displayed?	Perform the diagnosis according to DTC.
2.CHECK POOR CONTACT. 1) Turn the ignition switch to OFF, disconnect the battery ground cable, and wait for 20 seconds or more. 2) Confirm that the airbag control module and the connectors (AB6, AB17, AB18) are securely connected.	Is there faulty connector contact (AB6, AB17, AB18)?	If the faulty connector contact remains, replace the airbag main harness along with body harness or replace the airbag control module.
3.CHECK AIRBAG MAIN HARNESS. 1) Remove the instrument panel lower cover and disconnect the connectors (AB7) and (AB2). 2) Remove the instrument panel side cover on the passenger’s side and disconnect the connectors (AB10) and (AB9). 3) Disconnect the connectors (AB6, AB17, AB18) from the airbag control module, and connect the test harness AG connector (1AG). NOTE: For models without side airbag, connect test harness AH between the connectors (AB6, AB17, AB18) and (1AG). 4) Connect the battery ground terminal and turn the ignition switch to ON. 5) Connect the connectors (7AG) and (8AG) in the test harness AG. NOTE: After the fault has been cleared, disconnect the connectors (7AG) and (8AG).	Does the airbag warning light go off?
4.CHECK GROUND CIRCUIT. Measure the resistance between connector (2AG) in the test harness AG and chassis ground. Connector & terminal (2AG) No. 4 — Chassis ground: (2AG) No. 3 — Chassis ground:	Is the resistance less than 10 Ω?	Replace the airbag control module.	Repair the chassis ground circuit.
5.CHECK AIRBAG MAIN HARNESS AND BULKHEAD HARNESS. 1) Disconnect the connectors (7AG) and (8AG). 2) Remove the combination meter. 3) Measure the resistance between the combination meter connector and test harness AG connector (2AG). Connector & terminal (2AG) No. 5 — (i10) No. 36:	Is the resistance less than 10 Ω?	Check the combination meter.
6.CHECK POOR CONTACT OF CONNECTORS (AB1) AND (B31). 1) Turn the ignition switch to OFF, disconnect the battery ground terminal, and wait 20 seconds or more. 2) Confirm that there is a firm contact between connectors (AB1) and (B31).	Is there poor contact in connectors (AB1) and (B31)?	Repair the bulkhead harness or replace the airbag main harness along with body harness.
7.CHECK AIRBAG MAIN HARNESS. Check the airbag main harness for defect.	Is there any defect in the airbag main harness?	Replace the airbag main harness along with bulkhead harness.	Repair the bulkhead harness.