B1352 - FAULT CODE - OBD2

B1352 BUICK, CADILLAC, CHEVROLET, GMC: FRONT PASSENGER FRONTAL AIR BAG RESISTANCE TOO LOW

B1352 HYUNDAI, KIA: PASSENGER SIDE AIR BAG MODULE LOW FIRST STAGE RESISTANCE

When the ignition switch is turned on, the SDM (Sensing and Diagnostic Module) checks for faults within the module itself by means of ignition tests. If no problems are found in the results of these tests, the ignition and deployment loop voltages are measured to ensure that they are within the proper voltage ranges.

The deployment loop voltages are also monitored by the SDM to check the driver and passenger side for a short-to-ground or open circuit. The electrical connections to the Passenger Airbag Module are checked by allowing infinitesimal current to pass through the internal circuit and checking the resistance.

When the B1352 OBDII diagnostic code is set, it is because the passenger front deployment loop has exhibited a low resistance condition, being below 1.77 ohms.

• Check Engine light illuminated.
• The airbag light illuminated.

The reasons for setting the B1352 OBD2 fault code are as follows:

• The passenger front airbag may have damage to its wiring.
• Airbag electrical connections may have deficiencies causing out-of-range voltages.
• The Passenger Airbag Module could be in poor condition.
• There may be deficiencies in the Detection and Diagnostic Module.

The steps to troubleshoot DTC B1352 OBDII code are:

• Consult the TSB (Technical Service Bulletins).
• Before proceeding with the diagnosis of this system, we recommend waiting 1 minute after disconnecting the power supply of the Detection and Diagnosis Module, since it stores enough voltage for the deployment of the Airbags and pretensioners. After this, look for damage to the passenger airbag wires and repair any damage caused by burns or wear.
• Unplug the Passenger Airbag Module connector and the SDM wiring connector. Then, measure the resistance at the module terminals and verify that the resistance is as indicated in the manufacturer's specifications. If you find inconsistencies in this check, make any necessary repairs or replacements to the Airbag.
• If after performing the above checks you still get code B1352, it is indicative of SDM or Passenger Airbag Module