81-79

SRS DTC Troubleshooting: 81-79

DTC 81-79: Passenger's Weight Sensors Initial Check Failure

NOTE: Before doing this troubleshooting procedure, review SRS Precautions and Procedures Technician Safety Information and General Troubleshooting Information . Initial Inspection and Diagnostic Overview

1. Clear the DTC memory. Initial Inspection and Diagnostic Overview

2. Turn the ignition switch to ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

Does the SRS indicator stay on, and is DTC 81-79 indicated?
YES - Go to step 3.

NO - Intermittent failure, system is OK at this time. Go to Troubleshooting Intermittent Failures. Initial Inspection and Diagnostic Overview If another DTC is indicated, troubleshoot the DTC.


3. Turn the ignition switch to LOCK (0).

4. Make sure nothing is on the passenger's seat.

5. Turn the ignition switch to ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.

Does the SRS indicator go off?
YES - Remove the front passenger's seat assembly Removal and Replacement and the front passenger's weight sensors, Passengers Weight Sensor Replacement then reinstall them. Calibrate the front passenger's weight sensor unit. Programming and Relearning Retry the troubleshooting. If DTC 81-79 is still present, replace the front passenger's weight sensors Passengers Weight Sensor Replacement If the DTC is still present, replace the front passenger's weight sensor unit, Passengers Weight Sensor Unit Replacement then clear the DTC.

NO - The system is OK.