Go to step 8.
NO -
Faulty driver's seat belt buckle switch; replace the driver's seat belt buckle assembly, then clear the DTC.?
8. Disconnect the negative cable from the battery, then wait for 3 minutes.
9. Disconnect SRS unit connector B (39P) from the SRS unit.
10. Measure the resistance between SRS unit connector B (39P) terminal No. 20 and the driver's seat wire harness 3P connector terminal No. 1.
There should be less than 1.0 Ohms.
Is the resistance as specified?
YES -
Faulty SRS unit or poor connection at SRS unit connector B (39P) and the SRS unit. Check the connection between the connector and the SRS
unit. If the connection is OK, replace the SRS unit See: Relays and Modules/Relays and Modules - Restraints and Safety Systems/Air Bag Control
Module/Service and Repair/SRS Unit Replacement.?
NO -
Open in the driver's seat wire harness, floor wire harness, or poor connection. Check the connection; if the connection is OK, replace the faulty
harness, then clear the DTC.?
11. Turn the ignition switch to LOCK (0).
12. Disconnect the driver's seat wire harness 3P connector (A) from the driver's seat belt buckle switch 3P connector (B).
13. Unbuckle the driver's seat belt.
14. Measure the resistance between driver's seat belt buckle switch 3P connector terminals No. 2 and No. 3. There should be less than 1.0 Ohms.
