ECLIPSE SPYDER

INSPECTION PROCEDURE L-2: Interior Light: The dome light does not illuminate or go out normally.

Dome Light Circuit Part 1:

Dome Light Circuit Part 2:

CIRCUIT OPERATION
The ETACS-ECU operates the dome light according to the following signals:
- Ignition switch (IG1): ON or OFF
- Key reminder switch: ON or OFF
- Door switches: ON or OFF
- Driver's door lock actuator switch: LOCK or UNLOCK.

TECHNICAL DESCRIPTION (COMMENT)
Is the dome light does not flash normally, a burned- out dome light bulb, the input circuits from the switches described in "CIRCUIT OPERATION", the power supply line to the switches or the ETACS-ECU may be defective.

TROUBLESHOOTING HINTS
- The dome light bulb may be defective
- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
- The ETACS-ECU may be defective

DIAGNOSIS

Required Special Tools:
- MB991223: Harness Set
- MB992006: Extra Fine Probe
- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: V.C.I.
- MB991827: M.U.T.-III USB Cable
- MB991910: M.U.T.-III Main Harness A




STEP 1. Check dome light connector D-04 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q: Is dome light connector D-04 in good condition?

YES: Go to Step 2.

NO: Repair or replace the damaged component(s). Refer to Harness Connector Inspection. Check that the front dome light illuminates normally.

STEP 2. Check the dome light bulb.

Q: Is the dome light bulb in good condition?

YES: Go to Step 3.

NO: Replace the dome light bulb. Check that the dome light illuminates normally.

STEP 3. Check the ground circuit to the dome light. Measure the resistance at dome light connector D-04.




1. Disconnect dome light connector D-04 and measure the resistance available at the wiring harness side of the connector.




2. Measure the resistance value between terminal 2 and ground.
The resistance should be 2 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES: Go to Step 5.

NO: Go to Step 4.




STEP 4. Check the wiring harness between dome light connector D-04 (terminal 2) and ground.






NOTE: Also check intermediate connector C-27 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-27 is damaged, repair or replace the damaged component(s) as described in Harness Connector Inspection.

Q: Is the wiring harness between dome light connector D- 04 (terminal 2) and ground in good condition?

YES: Replace the dome light. Check that the dome light illuminates normally.

NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. Check that the front dome light illuminates normally.




STEP 5. 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 6.

NO: Repair or replace the damaged component(s). Refer to Harness Connector Inspection. Check that the dome light illuminates normally.







STEP 6. Check the wiring harness between dome light connector D-04 (terminals 6 and 7) and ETACS-ECU connector C-217 (terminals 5 and 6).

Q: Is the wiring harness between dome light connector D- 04 (terminals 6 and 7) and ETACS-ECU connector C-217 (terminals 5 and 6) in good condition?

YES: Replace the dome light. Check that the dome light illuminates normally.

NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. Check that the dome light illuminates normally.