Troubleshooting Hints

The wiring harness may be defective [open circuit between ABS-ECU < vehicles without TCL or ASC > or ABS/TCL-ECU < vehicles with TCL > or TCL/ASC-ECU < vehicles with ASC > and joint connector (3) or open circuit between ABS-ECU < vehicles without TCL or ASC > or ABS/TCL-ECU < vehicles with TCL > or TCL/ASC-ECU < vehicles with ASC > and ECM < M/T > or PCM < A/T >]
The connector may be defective [poor connection of joint connector (3) or ABS-ECU < vehicles without TCL or ASC > or ABS/TCL-ECU < vehicles with TCL > or TCL/ASC-ECU < vehicles with ASC > connector]
The ABS-ECU < vehicles without TCL or ASC > or ABS/TCL-ECU < vehicles with TCL > or TCL/ASC-ECU < vehicles with ASC > may be defective (internal open circuit)
The ECM < M/T > or PCM < A/T > may be defective (internal open circuit)