DTC Troubleshooting: 61-1x - With Seat Heater
  1. Measure the voltage between the No. 19 terminal of SRS unit connector B (39P) and body ground. There should be more than 10 V.
Is the voltage as specified?
YES -
Go to Step 12 .
NO -
Open in the driver's (LHD model) or passenger's (RHD model) seat wire harness, SRS floor wire harness; replace the faulty harness.■
  1. Turn the ignition switch to LOCK (0).