SRS DTC Troubleshooting: 56-12, 56-13
DTC 56-12, 56-13:
 Undefined Data Received from the ECM (engine message)
  1. Turn the ignition switch ON (II), and see if the malfunction indicator lamp (MIL) comes on.
Does the malfunction indicator lamp (MIL) come on?
YES -
Go to Step 2 .
NO -
  1. Turn the ignition switch ON (II), and wait for 10 seconds.
Is DTC 56-12 or 56-13 indicated?
YES -
NO -
Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, go to the DTC Troubleshooting Index.