DTC 26-1
DTC 26-1: VSA Modulator Control Unit or Wire Harness1. Clear the DTCs.
2. Test-drive rive the vehicle, and watch the VTM-4 indicator.
Does the VTM-4 indicator come on?
YES - Go to step 3.
NO - The system is OK at this time.
3. Watch the VSA indicator.
Does the VSA indicator dome on?
YES - Check the VSA system for DTCs.
NO - Go to step 4.
4. Raise the vehicle, and make sure it is securely supported.
5. Turn the ignition switch ON (II).
6. Measure the voltage between the A3, A5, A7, and A9 terminals of the VTM-4 control unit and body ground while rotating the appropriate wheel one rotation a second.
Are all four readings about 2 V to 3 V?
YES - Check for loose terminal fit in the VTM-4 control unit. If it is normal, replace the VTM-4 control unit.
NO - Check for loose wires or poor connections between the VTM-4 control unit and the VSA control unit. If it is normal, replace the VSA modulator assembly.