Eclipse L4-2.4L SOHC (2004)
Normal conditions are displayed for all the items: Go to Step 3.
The scan tool does not show the respective normal condition for item "HEADLIGHT SW": Refer to Inspection Procedure O-7
"ETACS-ECU does not receive a signal from the headlight switch."
The scan tool does not show the respective normal condition for item "H/L AUTO-CUT": Refer to Inspection Procedure J-9 "Headlight
automatic shutdown function does not work normally."
The scan tool does not show the respective normal condition for item "FRONT ECU ACK": Replace the ECU. Check that the headlights
(low-beam) illuminate normally.
STEP 3. Measure at front-ECU connector A-10X in order to check the battery circuit of power supply system to the front-ECU.
1. Disconnect front-ECU connector A-10X, and measure at the relay box side.
2. Measure the voltage between terminal 3 and ground.
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The measured value should be approximately 12 volts (battery positive voltage).
Q: Does the measured voltage correspond with this range?
YES: Replace the front-ECU. Check that the headlights (low-beam) illuminate normally.
NO: Go to Step 4.
STEP 4. Check the front-ECU connector A-10X for damage.
Q: Is front-ECU connector A-10X in good condition?
