56-27

SRS DTC Troubleshooting: 56-26, 56-27

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 Service and Repair.
- Before doing this troubleshooting procedure, review SRS Precautions and Procedures Service and Repair and General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes.
- 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 Testing and Inspection, and retest.

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. Clear the DTCs with the HDS.

3. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode, then wait for 10 seconds.

4. Check for DTCs with the HDS.

Is DTC 56-26 or 56-27 indicated?

YES -

Faulty gauge control module. Do the gauge control module self-diagnostic function Testing and Inspection, and retest. If the self-diagnosis is problem, replace the gauge control module Service and Repair, then clear the DTC, and retest. If the DTC is still present, replace the SRS unit Service and Repair.

NO -

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