- Disconnect the battery negative cable and wait for 3 minutes.
- Disconnect the D1o connector (A), P1o connector (B) and TL1o connector (C).

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- Disconnect the U1o connector (A) from the SRS unit (B).
- Disconnect the special tool (2 ohm) from the T2i connector.
- Reconnect the battery negative cable.
- Turn the ignition switch ON (II).
- Check for voltage between the No. 9 terminal of the U1o connector and body ground. There should be 0.5 V or less. Check for voltage between the No. 18 terminal of the U1o connector and body ground. There should be 0.5 V or less.
U1o CONNECTOR

Wire side of female terminals
Is the voltage as specified?
YES - Faulty SRS unit; replace the SRS unit (see page 23-176). 
NO - Short to power in dashboard wire harness B; replace dashboard wire harness B. 
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