Eclipse V6-3.8L (6G75) (2006)
Ignition Switch (IG1) Input Circuit Part 2
CIRCUIT OPERATION
The ETACS-ECU operates the following equipment or functions according to signal from the ignition switch (IG1):
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Ignition key reminder tone alarm function
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Light reminder tone alarm function
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Seat belt tone alarm function
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Door ajar warning buzzer
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Power window timer function
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Sunroof timer function
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Headlight automatic shutdown function
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Turn-signal light
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Dome light dimming function
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Ignition key cylinder illumination light
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If the power supply circuit from the battery to the ETACS-ECU is open, this circuit is used as backup circuit.
If the signal is not normal, the equipment or functions described in "CIRCUIT OPERATION" do not work normally.
The ETACS-ECU receives information on the ignition switch condition (IG1) from the combination meter via CAN communication. If the ignition
switch (IG1) input signal is incorrect, refer to the Diagnostic Trouble Code Chart. See: Diagnostic Trouble Code Descriptions
TROUBLESHOOTING HINTS
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The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
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The ETACS-ECU may be defective
DIAGNOSIS
Required Special Tools:
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MB991223: Harness Set
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MB992006: Extra Fine Probe
STEP 1. Check ETACS-ECU connector C-217 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Is ETACS-ECU connector C-217 in good condition?
YES: Go to Step 2.
NO: Repair or replace the damaged component(s). Refer to Harness Connector Inspection. If the functions described in "CIRCUIT
OPERATION" work normally, the input signal from the ignition switch (IG1) should be normal.
STEP 2. Check the ignition switch (IG1) line of the power supply circuit to the ETACS-ECU. Measure the voltage at ETACS-ECU connector
C-217.