Diagnosis code
No.01 Trouble in SWS communication line system or ETACS-ECU
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If diagnosis code No. 01
is set in the ETACS-ECU, diagnose the CAN bus lines.
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The ETACS-ECU communicates with the column
switch, the front-ECU, the sunroof motor assembly
and the power window main switch through the SWS communication line. If
there is any trouble
in the ETACS-ECU or the SWS communication lines , diagnosis code No. 01
will be set.
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COMMENT ON TROUBLE SYMPTOM
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The wiring harness wire or connectors may have
loose, corroded, or damage terminals, or
terminals pushed back in the connector, or the ETACS-ECU may be
defective.
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- Malfunction of the ETACS-ECU
- Damaged harness wires and connectors
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Step 1. M.U.T.-III CAN bus diagnostics
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Use the M.U.T.-III to diagnose the CAN bus
lines.
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Q.
Is the check result normal?
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Go to Step 2.
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Correct the CAN bus line. (Refer to
Group 54F - Diagnosis .)
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Step 2. Check whether the diagnosis code is reset.
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Check again if the diagnosis code is
set.
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(1)Ignition switch: LOCK (OFF) position to ON
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(2)Erase the diagnosis code.
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(3)On completion, check that the diagnosis code is not
reset.
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Q.
Is the check result normal?
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The
trouble can be an intermittent malfunction (Refer to GROUP 00 - How
to Cope with Intermittent Malfunction ).
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Replace the ETACS-ECU.
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