SRS DTC Troubleshooting: 42-1x
DTC 42-1x (‘‘x'' can be 0 thru 9 or A thru F):
No Signal from the Right Front Impact Sensor
Special Tools Required

SRS inflator simulator
 07SAZ-TB4011A

SRS simulator lead L
 070AZ-SNA0300
NOTE: Before doing this troubleshooting procedure, review SRS Precautions and Procedures.
  1. Erase the DTC memory.
  1. 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 42-1x indicated?
YES -
Go to Step 3 .
NO -
Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, go to the DTC Troubleshooting Index.
  1. Turn the ignition switch OFF.
  1. Disconnect the negative cable from the battery, and wait for 3 minutes.
  1. Check the connections between SRS unit connector A (28P) and the SRS unit, between the engine compartment wire harness 2P connector and the right front impact sensor, and at engine compartment wire harness 4P connector.
Are the connections OK?
YES -
Go to Step 6 .
NO -
Repair the poor connections and retest. If DTC 42-1x is still present, go to Step 6 .
  1. Disconnect the engine compartment wire harness 2P connector (A) from the right front impact sensor.
  1. Disconnect SRS unit connector A (28P) from the SRS unit.