Code No.26 Driver's seat belt pre-tensioner (squib) system

Possible cause

This code is output when short circuit occurs between terminals of the SRS-ECU driver's seat belt pre-tensioner (squib) circuit. However, SRS warning lamp goes out when a normal operation is resumed (diagnosis code is not cleared.)

•Connector engagement faulty or short bar faulty* •Short circuit between terminals of the driver's seat belt pre-tensioner (squib) circuit •Faulty connector •SRS-ECU inoperable

NOTE:
*: The connector of the squib circuit contains a short bar (short-circuiting the positive (+) cable and the negative (-) cable to avoid an erroneous deployment caused by static electricity when a connector is not connected). Thus, when a connector is connected, the short bar may not be released due to improper engagement of the connector or faulty connector as shown in the illustration below. Disconnect the connector as shown in the illustration below, then reconnect it. Check that a diagnosis code is output again after erasing the memory. If the diagnosis code is not output, the above-mentioned code is output due to improper engagement of the connector.

Code No.27 Driver's seat belt pre-tensioner (squib) system

Possible cause

This code is output when open circuit occurs in the SRS-ECU driver's seat belt pre-tensioner (squib) circuit. However, SRS warning lamp goes out when a normal operation is resumed (diagnosis code is not cleared.)

•Connector improper contact •Open in the driver's seat pre-tensioner (squib) circuit •SRS-ECU inoperable