ECU CHECK


1.Use the M.U.T.-III and the SWS monitor to check ECUs.
2.The following ECUs can be checked by using the M.U.T.-III and the SWS monitor.
note If a malfunction is found by the "ECU check", proceed "Symptom Procedure" (Refer to ).
SWS monitor-compatible ECUs and their conditions
Item No.
 ECUs to be checked
 Display on M.U.T.-III
 Normal condition
 ECU conditions
Item 80
 Column switch (column-ECU)
 COLUMN ECU
 OK*
 All of the column switch, power supply, earth and interconnecting communication line are normal
Item 83
 ETACS-ECU
 ETACS ECU
 OK
 All of the ETACS-ECU switch, power supply, earth and interconnecting communication line are normal
Item 84
 Front-ECU
 FRONT ECU
 OK
 All of the front-ECU, power supply, earth and interconnecting communication line are normal
Item 86
 Sunroof motor assembly (sunroof-ECU)
 SUNROOF ECU
 OK
 All of the sunroof motor assembly, power supply, earth and interconnecting communication line are normal
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 Other SWS-related ECUs
 Other ECUs
 NG
 Because the ECU does not conduct SWS communication, NG is always displayed.
note *: If "NG" is displayed beside the ETACS-ECU while the ignition switch is off, "NG" is also displayed beside the column-ECU.