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DTC 25

DTC 25

DTC DTTECTING CONDITION:


• Airbag control module is faulty.

• Airbag main harness circuit is open.

• Fuse No. 6 (in joint box) is blown.

• Body harness circuit is open.


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

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

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


WIRING DIAGRAM:


CHECK AIRBAG CONTROL MODULE.

Turn the ignition switch to OFF, disconnect the battery ground cable, and wait more than 20 seconds.

Disconnect the connector (AB3) from airbag control module.

Connect the connector (1R) in test harness R to connector (AB3).

Connect the battery ground cable, and turn the ignition switch to ON.

Measure the voltage between the connector (2R) in test harness R and the chassis ground.

Connector & terminal

(2R) No. 6 (+) — Chassis ground (−):

Is the voltage more than 10 V?

Yes

Replace the airbag control module.


No


CHECK AIRBAG MAIN HARNESS.

While checking control module, turn the ignition switch to OFF and disconnect the battery ground cable. Wait more than 20 seconds before operation.

Disconnect the airbag connector (AB1) from the body harness (B31).

Connect the connector (2M) in test harness M to the airbag connector (AB1).

Measure the resistance between the connector (5M) in test harness M and the connector (2R) in test harness R.

Connector & terminal

(5M) No. 4 — (2R) No. 6:

Is the resistance less than 10 Ω?

Yes


No

Replace the body harness with airbag main harness.


CHECK AIRBAG MAIN HARNESS.

Measure the following resistance with the above-mentioned condition maintained.

Connector & terminal

(5M) No. 4 — Chassis ground: (2R) No. 6 — Chassis ground:

Is the resistance more than 1 MΩ?

Yes


No

Replace the body harness with airbag main harness.


CHECK FUSE NO. 6 (IN JOINT BOX).

Confirm that the ignition switch is turned OFF.

Remove the No. 6 fuse (in joint box) and perform visual inspection.

Is the fuse No. 6 blown out?

Yes

Replace the fuse No. 6. If fuse No. 6 is blown out again, repair the body harness.


No

Repair the body harness.