NO -
Remove the debris from the magnetic encoder, or replace the front hub bearing unit or the rear hub bearing unit (magnetic encoder):
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6. Update the VSA modulator-control unit if it does not have the latest software See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Traction Control Module/Testing and Inspection. If the unit already has the latest software, substitute a known-good VSA
modulator-control unit See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Traction Control Module/Service and
Repair.
7. Test-drive the vehicle at 31 mph (50 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.
8. Check for DTCs with the HDS.
Is DTC 21, 22, 23, or 24 indicated?
YES -
Check for loose terminals in the VSA modulator-control unit 46P connector. If the VSA modulator-control unit was updated, substitute a
known-good VSA modulator-control unit See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Traction Control
Module/Testing and Inspection. If a known-good VSA modulator-control unit was substituted, replace the appropriate hub bearing unit if it has not
been replaced.
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NO -
If the VSA modulator-control unit was updated, troubleshooting is complete. If the VSA modulator-control unit was substituted, replace the
original VSA modulator-control unit See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Traction Control
Module/Testing and Inspection. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.?
SRS
SRS DTC Troubleshooting: 21-1x, 21-2x
DTC 21-1x ("x" can be 0 thru 9 or A thru F):
Open in the Driver's Seat Belt Tensioner
DTC 21-2x ("x" can be 0 thru 9 or A thru F):
Increased Resistance in the Driver's Seat Belt Tensioner
Special Tools Required
- SRS Inflator Simulator 07SAZ-TB4011A
- SRS Simulator Lead K 070AZ-SNAA200
- SRS Short Canceller 070AZ-SAA0100
NOTE:
- Before doing this troubleshooting procedure, review SRS Precautions and Procedures See: Body and Frame/Air Bag(s) Arming and
Disarming/Service and Repair, General Troubleshooting Information See: Restraints and Safety Systems/Air Bag Systems/Testing and
Inspection/Reading and Clearing Diagnostic Trouble Codes, and Battery Terminal Disconnection and Reconnection See: Starting and
Charging/Battery/Service and Repair/Procedures.
- Before replacing the SRS unit, check the SRS unit software version with the HDS. If the software version is not the latest, update the SRS
unit software See: Restraints and Safety Systems/Air Bag Systems/Testing and Inspection/Programming and Relearning/SRS Unit Update,
and retest.
1. Clear the DTCs with the HDS.
2. Turn the ignition switch to ON (II), then wait for 10 seconds.
3. Check for DTCs with the HDS.
Is DTC 21-1x or 21-2x indicated?
