( TF09E16K791000R123XFAAT00 )
SRS DTC Troubleshooting: 12-3x
DTC 12-3x (‘‘x'' can be 0 thru 9 or A thru F):
Short to Another Wire or Decreased Resistance in the Driver's Airbag Inflator (RHD model)
NOTE:
  1. Turn the ignition switch to ON (II), then wait for 10 seconds.
Is DTC 12-3x indicated?
YES -
Go to Step 4 .
NO -
Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, troubleshoot the DTC.
  1. Turn the ignition switch to LOCK (0).
  1. Turn the ignition switch to ON (II), then wait for 10 seconds.
Is DTC 12-3x indicated?
YES -
Go to Step 11 .
NO -
Faulty driver's airbag; replace the driver's airbag. ■
  1. Turn the ignition switch to LOCK (0).
  1. Remove the column cover , then disconnect the dashboard wire harness 4P connector (A) from the cable reel.
  1. Turn the ignition switch to ON (II), then wait for 10 seconds.
Is DTC 12-3x indicated?
YES -
Go to Step 18 .
NO -
Short in the cable reel; replace the cable reel. ■
  1. Turn the ignition switch to LOCK (0).
  1. Measure the resistance between the No. 5 and the No. 6 terminals of the SRS unit connector A (39P). There should be 0−1.0 Ω.
Is the resistance as specified?
YES -
Short in the dashboard wire harness; replace the dashboard wire harness.■
NO -
Faulty SRS unit; replace the SRS unit. ■