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SRS DTC Troubleshooting: 21-1x, 21-2x

DTC 21-1x (‘‘x'' can be 0 thru 9 or A thru F):
Open in the Left Side Seat Belt Tensioner
DTC 21-2x (‘‘x'' can be 0 thru 9 or A thru F):
Increased Resistance in the Left Side Seat Belt Tensioner
NOTE:
  1. Turn the ignition switch to ON (II), then wait for 10 seconds.
Is DTC 21-1x or 21-2x indicated?
YES -
Go to Step 4 .
NO -
Intermittent failure, the system is OK at this time. Go to Troubleshooting Intermittent Failures. If another DTC is indicated, troubleshoot the DTC.
  1. Turn the ignition switch to LOCK (0).
  1. Install a jumper wire between the No. 2 and the No. 3 terminals of the floor wire harness 4P connector.
  1. Turn the ignition switch to ON (II), then wait for 10 seconds.
Is DTC 21-1x or 21-2x indicated?
YES -
Go to Step 12 .
NO -
Faulty left side seat belt tensioner; replace the left side seat belt tensioner.
  1. Turn the ignition switch to LOCK (0).
  1. Remove a jumper wire from the floor wire harness 4P connector.

  1. Install a jumper wire between the No. 12 and the No. 13 terminals of SRS unit connector B (39P).

  1. Check for continuity between the No. 2 and the No. 3 terminals of floor wire harness 4P connector.
Is there continuity?
YES -
NO -
Open or increased resistance in the floor wire harness; replace the floor wire harness.■