DTC 56-26; 56-27: Undefined Data Received From the Gauge Control Module

NOTE: 

• Before doing this troubleshooting procedure, find out if the vehicle was in a collision. If so, verify that all the required components were replaced with new components, of the correct part number, and that they were properly installed .
• Before doing this troubleshooting procedure, review SRS Precautions and Procedures and General Troubleshooting Information .
• Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS unit software , and retest.

DTC (SRS)

• 1. Body electrical system check:

  1. Check for any F-CAN and B-CAN communication DTCs with the HDS.

  Are there any communication DTCs?

  YES 

  Go to the appropriate DTC troubleshooting.

  NO 

  Go to step 2.

• 2. DTC check:

  1. Clear the DTCs with the HDS .

  2. Turn the vehicle to the ON mode, then wait for 10 seconds.

  3. Check for DTCs with the HDS .

  DTC Description	DTC
  56-26 Undefined data received from the gauge control module

  DTC Description	DTC
  56-27 Undefined data received from the gauge control module

  Is DTC 56-26 or 56-27 indicated?

  YES 

  Do the gauge control module self-diagnostic function . If gauge control module has the problem, replace the gauge control module , then clear the DTC, and retest. If the DTC is still present, replace the SRS unit .

  NO 

  Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures . If another DTC is indicated, troubleshoot the DTC.