DTC 12-1x ("x" can be 0 thru 9 or A thru F): Open in Front Passenger's Airbag First Inflator; DTC 12-4x ("x" can be 0 thru 9 or A thru F): Open in Front Passenger's Airbag Second Inflator

Special Tools Required

SRS inflator simulator 07SAZ-TB4011A
SRS simulator lead F 07XAZ-SZ30100

NOTE: Before doing this troubleshooting procedure, review SRS Precautions and Procedures (see PRECAUTIONS AND PROCEDURES ) and General Troubleshooting Information (see DTC (DIAGNOSTIC TROUBLE CODES) ).

Clear the DTC memory (see CLEAR THE DTC MEMORY WITH THE HDS ).
Turn the ignition switch ON (II), and check that the SRS indicator comes on for about 6 seconds and then goes off.
Does the SRS indicator stay on, and is DTC 12-1x or 12-4x indicated?

YES -Go to step 3.

NO -Intermittent failure, system is OK at this time. Go to TROUBLESHOOTING INTERMITTENT FAILURES . If another DTC is indicated, troubleshoot the DTC.
Turn the ignition switch OFF. Disconnect the negative cable from the battery, then wait for 3 minutes.
Disconnect the front passenger's airbag 4P connector (A) from the dashboard wire harness.

Fig 1: Identifying Front Passenger's Airbag 4P Connector
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Connect the SRS inflator simulator (2 Ω connectors) and simulator lead F to the dashboard wire harness.
Reconnect the negative cable to the battery.
Clear the DTC memory.
Read the DTC (see DTC (DIAGNOSTIC TROUBLE CODES) ).
Is DTC 12-1x or 12-4x indicated?

YES -Go to step 9.

NO -Open in the front passenger's airbag first or second inflator; replace the front passenger's airbag (see FRONT PASSENGER'S AIRBAG REPLACEMENT ).
Turn the ignition switch OFF. Disconnect the negative cable from the battery, then wait for 3 minutes.
Disconnect SRS unit connector A (28P) from the SRS unit (see step 7 ).
Disconnect the SRS inflator simulator from the SRS simulator lead. Do not disconnect the simulator lead from the dashboard wire harness 4P connector.
Measure the resistance between the terminals of both SRS simulator leads. There should be 1 Ω or less.

Fig 2: Measuring Resistance Between Terminals Of Both SRS Simulator Leads
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is the resistance as specified?

YES -Faulty SRS unit or poor connection at SRS unit connector A (28P). Check the connection; if the connection is OK, replace the SRS unit (see SRS UNIT REPLACEMENT ).

NO -Open in the dashboard wire harness; replace the dashboard wire harness.