Skip to main content
SRS DTC Troubleshooting: 12-1x, 12-2x

DTC 12-1x (‘‘x'' can be 0 thru 9 or A thru F):
Open in the Driver's Airbag Inflator (RHD model)
DTC 12-2x (‘‘x'' can be 0 thru 9 or A thru F):
Increased 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 12-1x or 12-2x 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. Install a jumper wire between the No. 2 and No. 3 terminals of the cable reel 4P connector.
  1. Turn the ignition switch to ON (II), then wait for 10 seconds.
Are DTC 12-1x or 12-2x indicated?
YES -
Go to Step 12 .
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. Install a jumper wire between the No. 2 and the No. 3 terminals of the dashboard wire harness 4P connector.
Is DTC 12-1x or 12-2x indicated?
YES -
Go to Step 18 .
NO -
Open or increased resistance in the cable reel; replace the cable reel.
  1. Turn the ignition switch to LOCK (0).
  1. Remove a jumper wire from the dashboard wire harness 4P connector.

  1. Install a jumper wire between the No. 5 and the No. 6 terminals of SRS unit connector A (39P).

  1. Measure the resistance between the No. 2 and the No. 3 terminals of the dashboard wire harness 4P connector. There should be 0−1.0 Ω.
Is the resistance as specified?
YES -
Faulty SRS unit or poor connection at SRS unit connector A (39P) and the SRS unit. Check the connection between the connector and the SRS unit. If the connection is OK, replace the SRS unit.
NO -
Open or increased resistance in the dashboard wire harness; replace the dashboard wire harness.■