DTC A1-1x

A1-1x (A1-10 to A1-19, A1-1A to A1-1F): Faulty Power Supply (VA line)

1. Check the No.1 (15A) fuse in the driver's under-dash fuse/relay box.

Is the fuse OK?

YES - Go to step 2.

NO - Short to ground in the driver's under-dash fuse/relay box No.1 (15A) fuse circuit.

2. Turn the ignition switch OFF. Disconnect the battery negative cable.
3. Disconnect SRS unit connector A (28P) from the SRS unit.
4. Reconnect the battery negative cable.




5. Connect a voltmeter between the No.17 terminal of SRS unit connector A (28P) and body ground. Turn the ignition switch ON (II), and measure voltage. There should be battery voltage.

Is there battery voltage?

YES - Faulty SRS unit or poor connect at SRS unit connector A (28P) and the SRS unit; check the connection. If the connection is OK, replace the SRS unit.

NO - Go to step 6.

6. Turn the ignition switch OFF.




7. Disconnect driver's under-dash fuse/relay box connector B (2P).




8. Check resistance between the No.1 terminal of driver's under-dash fuse/relay box connector B (2P) and the No.17 terminal of SRS unit connector A (28P). There should be 0-1.0 Ohm.

Is the resistance as specified?

YES - Open in the driver's under-dash fuse/relay box or poor contact at driver's under-dash fusel relay box connector B (2P) and the driver's under-dash fuse/relay box; check the connection. If the connection is OK, replace the driver's under-dash fuse/relay box.

NO - Go to step 9.




9. Disconnect SRS main harness 28P connector C801 (A) from the SRS main subharness connector C801 (B).




10. Check resistance between the No.1 terminal of driver's under-dash fuse/relay box connector B (2P) and the No.17 terminal of SRS main harness 28P connector C801. There should be 0-1.0 Ohm.

Is the resistance as specified?

YES - Open in the SRS main subharness; replace the SRS main subharness.

NO - Open in the SRS main harness; replace the SRS main harness.