DTC Troubleshooting: 22-1x, 22-2x

DTC 22-1x (22-10 to 22-19, 22-1A to 22-1F):
Open in Right Side Seat Belt Tensioner
DTC 22-2x (22-20 to 22-29, 22-2A to 22-2F):
Increased Resistance in Right Side Seat Belt Tensioner
Special Tools Required

SRS inflator simulator
 07SAZ-TB4011A

SRS simulator lead F
 07XAZ-SZ30100
  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 22-1x or 22-2x 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, go to the DTC troubleshooting index for troubleshooting details.
  1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.
  1. Disconnect the right side seat belt tensioner 4P connector (A) from the floor wire harness.
  1. Connect the SRS inflator simulator (2 Ω connectors) and simulator lead F to the floor wire harness.
  1. Reconnect the battery negative cable.
  1. Erase the DTC memory.
  1. Read the DTC.
Is DTC 22-1x or 22-2x indicated?
YES -
Go to Step 9 .
NO -
Open or increased resistance in the right side seat belt tensioner; replace the Right side seat belt.
  1. Turn the ignition switch OFF. Disconnect the battery negative cable, and wait for 3 minutes.

  1. Disconnect the left side seat belt tensioner 4P connector (A).

  1. Disconnect SRS unit connector B (28P) from the SRS unit. Do not disconnect the simulator lead from the floor wire harness.

  1. Check resistance between the No. 3 terminal and the No. 4 terminal of SRS unit connector B (28P). There should be 2.0−3.0 Ω.
Is the resistance as specified?
YES -
Faulty SRS unit or poor contact at SRS unit connector B (28P) and the SRS unit. Check the connection; if the connection is OK, replace the SRS unit.
NO -
Open or increased resistance in the floor wire harness; replace the floor wire harness.■