Diesel Data: Automotive Repair

Symptom Troubleshooting




SRS Symptom Troubleshooting - SRS indicator stays on, but no DTCs are stored, or cannot be read

SRS indicator stays on, but no DTCs are stored, or cannot be read

NOTE: Before doing this troubleshooting procedure, make sure the battery is fully charged. If the battery voltage is low, SRS indicator may stays on.

1. Start the engine, and see if the malfunction indicator lamp (MIL) also stays on.

Does the MIL stay on longer than 30 seconds?

YES -

Go to the MIL Circuit Troubleshooting MIL Circuit Troubleshooting.�

NO -

Go to step 2.

2. Connect the HDS to the data link connector (DLC) Reading and Clearing Diagnostic Trouble Codes.

3. Make sure the HDS communicates with the vehicle and the SRS unit. If it does not communicate, troubleshoot the DLC circuit Testing and Inspection.

4. Check for DTCs with the HDS Reading and Clearing Diagnostic Trouble Codes.

Are any SRS DTCs indicated?

YES -

Do the SRS DTC troubleshooting.

NO -

Go to step 5.

5. Select Body Electrical status with the HDS.

6. Check for DTCs in the Gauge Menu with the HDS.

Is DTC U0151 indicated?

YES -

Troubleshoot DTC U0151 U0151.�

NO -

Go to step 7.

7. Do the gauge control module self-diagnostic function Initial Inspection and Diagnostic Overview.

Does the SRS indicator come on?

YES -

Faulty SRS unit; replace the SRS unit SRS Unit Replacement.�

NO -

Faulty gauge control module; replace the gauge control module Service and Repair.�