DTC Troubleshooting: 15-1

DTC 15-1:  Faulty OPDS Unit

1.Make sure nothing is on the front passenger's seat.

2.Initialize the OPDS unit.

3.Erase the DTC memory.

4.Read the DTC.

Is DTC 15-1 indicated?


YES - Go to 5.


NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures.


5.Check the No. 9 (15A) fuse in the under-dash fuse/relay box.

Is the fuse OK?


YES - Go to 6.


NO - Go to 9.


6.Disconnect the O1o connector (A) from the OPDS unit (B).

 

7.Turn the ignition switch ON (II).

8.Check for voltage between the No. 4 terminal of the O1o connector and body ground. There should be battery voltage.

 

Is there battery voltage?


YES - Go to 16.


NO - Open in the floor wire harness or in the OPDS unit harness; replace the faulty harness.n


9.Replace the No. 9 (15A) fuse in the under-dash fuse/relay box.

10.Turn the ignition switch ON (II) for 30 seconds, then turn it OFF.

11.Check the No. 9 (15A) fuse in under-dash fuse/relay box.

Is the fuse OK?


YES - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures.


NO - Go to 12.


12.Replace the No. 9 (15A) fuse in the under-dash fuse/relay box.

13.Disconnect the O1o connector (A) from the OPDS unit (B).

 

14.Turn the ignition switch ON (II) for 30 seconds, then turn it off.

15.Check the No. 9 (15A) fuse in the under-dash fuse/relay box.

Is the fuse OK?


YES - Short to ground in the  OPDS unit; replace the OPDS unit.n


NO - Short to ground in the No. 9 (15A) circuit.n


16.Turn the ignition switch OFF.

17.Check resistance between the No. 8 terminal of the O1o connector and body ground. There should be 0-1.0 W.

 

Is the resistance as specified?


YES - Go to 18.


NO - Open in floor wire harness or OPDS unit harness, or poor ground (G501). If the G501 is OK, replace the faulty harness.n

18.Disconnect the battery negative cable, and wait for 3 minutes.

19.Disconnect the TL1o and TR1o connectors (A) from the TL1i and TR1i connectors (B).

 


20.Disconnect the U2o connector (A) from the SRS unit.

 

21.Check resistance between the No. 27 terminal of the U2o connector and body ground. There should be 1 MW or more.

 

Is the resistance as specified?


YES - Go to 22.


NO - Short to ground in the floor wire harness or OPDS unit harness; replace the faulty harness.n

22.Check resistance between the No. 27 terminal of the U2o connector and the No. 7 terminal of the O1o connector. There should be 1.0 W or less.

 

Is the resistance as specified?


YES - Go to 23.


NO - Open in the floor wire harness or in the OPDS unit harness; replace the faulty harness.n

23.Disconnect the F1o connector (A) from the under-dash fuse/relay box.

 

24.Reconnect the negative battery cable.

25.Turn the ignition switch ON (II).

26.Check for voltage between the No. 3 terminal of the U2o connector and body ground. There should be 0.5 V or less.

 

Is the voltage as specified?


YES - Faulty  OPDS unit or  SRS unit. Replace the OPDS unit. If the problem is still present, replace the SRS unit.n


NO - Short to power in the floor wire harness or in the OPDS unit harness; replace the faulty harness.n