Eclipse V6-3.0L SOHC (2003)
Headlight Automatic Shut-down Function
CIRCUIT OPERATION
The ETACS-ECU operates the headlight automatic shutdown function according to the following signals:
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Ignition switch (IG1): OFF
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Driver's door switch: ON
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Tail light switch: ON
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Headlight switch: ON
The ETACS-ECU operates the headlight automatic shutdown function under the following conditions:
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Ignition key: Other than "ON" position
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Driver's door: open
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Tail light or headlight: Illuminating
TECHNICAL DESCRIPTION (COMMENT)
If the function does not work normally, the input circuit system from the switches, the ETACS-ECU or the front-ECU may be defective (refer to
"CIRCUIT OPERATION").
TROUBLESHOOTING HINTS
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Malfunction of the driver's door switch
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Malfunction of the column switch (turn-signal light and lighting switch)
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Malfunction of the ETACS-ECU
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Malfunction of the front-ECU
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Damaged harness wires or connectors
DIAGNOSIS
Required Special Tools:
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MB991223: Test Harness Set
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MB991502: Scan Tool (MUT-II)
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MB991862: SWS Monitor Kit
Check the input signal by using "FUNCTION DIAGNOSIS" of the SWS monitor.
Check the input signals from the following switches:
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Ignition switch: "ON" to "OFF"
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Lighting switch: "TAIL" or "HEAD"
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Driver's and front passenger's door: closed
CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or
disconnecting scan tool MB991502. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502.