Disconnect the FSL1i connector (A) from the left front sensor. Disconnect the U1o connector (A) from the SRS unit (B).

Check resistance between the No. 10 and No. 11 terminals of U1o connector. There should be 1 M ohm or more. U1o CONNECTOR Wire side of female terminals Is the resistance as specified? YES - Go to step 11. NO - Short in the engine compartment wire harness or dashboard wire harness B; replace the faulty harness. Reconnect the battery negative cable. Turn the ignition switch ON (II). Check the voltage between the No. 10 terminal of the U1o connector and the body ground. There should be 1 V or less. U1o CONNECTOR Wire side of female terminals Is the voltage as specified? YES - Go to step 14. NO - Short to power in the engine compartment wire harness or dashboard wire harness B; replace the faulty harness.