DTC Troubleshooting: 85-61, 85-62

DTC 85-61:  No Signal from OPDS Unit
  
  

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

2.Erase the DTC memory.

3.Read the DTC.

Is DTC 85-61 or 85-62 indicated?


YES - Go to 4.


NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, go to the DTC Troubleshooting Index.


4.Check the connection between the OPDS unit harness 18P connector and the OPDS unit.

Is the connection OK?


YES - Go to 5.


NO - Repair the poor connection and retest. If DTC 85-61 or 85-62 is still present, go to 5.


5.Turn the ignition switch OFF.

6.Check the No. 9 (7.5 A) fuse in the under-dash fuse/relay box.

Is the fuse OK?


YES - Go to 7.


NO - Replace the fuse, then turn the ignition switch ON (II). If the fuse blows again, check for a short in the No. 9 (7.5 A) fuse circuit (floor wire harness or OPDS unit harness).n


7.Disconnect the OPDS unit harness 18P connector (A) from the OPDS unit.

 

8.Turn the ignition switch ON (II).

9.Check for voltage between the No. 1 terminal of the OPDS unit harness 18P connector and body ground. There should be battery voltage.

 

Is there battery voltage?


YES - Go to 10.


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

10.Turn the ignition switch OFF.

11.Check resistance between the No. 12 terminal of the OPDS unit harness 18P connector and body ground. There should be 0-1.0 W.

 

Is the resistance as specified?


YES - Go to 12.


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


12.Turn the ignition switch OFF. Disconnect the negative cable from the battery, and wait for 3 minutes.

13.Disconnect SRS unit connector A (28P) from the SRS unit.

14.Check resistance between the No. 14 terminal of SRS unit connector A (28P) and body ground. There should be an open circuit or at least 1 MW.

 

Is the resistance as specified?


YES - Go to 15


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

15.Check resistance between the No. 14 terminal of SRS unit connector A (28P) and the No. 7 terminal of the OPDS unit harness 18P connector. There should be 0-1.0 W.

 

Is the resistance 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 - Open in the dashboard wire harness or floor wire harness; replace the faulty harness.n