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Home >> Mitsubishi >> 2006 >> Lancer Evolution L4-2.0L DOHC Turbo >> Repair and Diagnosis >> Body and Frame >> Body Control Systems >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Symptom Diagnostic Procedures >> Inspection Procedure F-1

Inspection Procedure F-1

Sunroof: Sunroof does not operate.

Sunroof Motor Assembly Power Supply Circuit Part 1:




Sunroof Motor Assembly Power Supply Circuit Part 2:






CIRCUIT OPERATION
- The sunroof motor assembly is energized through fusible link (5) by the battery.
- When the ignition switch (IG2) signal is on, the sunroof motor assembly is ready to operate.

TROUBLESHOOTING HINTS
- The sunroof switch may be defective
- The sunroof-ECU may be defective
- The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector

DIAGNOSIS

Required Special Tool:
- MB991223: Harness Set
- MB992006: Extra Fine Probe




STEP 1. Check the sunroof motor assembly connector D-32 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q: Is sunroof motor assembly connector D-32 in good condition?

YES: Go to Step 2.

NO: Repair or replace the damaged components). Refer to Harness Connector Inspection. The sunroof should now work normally.

STEP 2. Check the fusible link (5) line of power supply circuit to the sunroof motor assembly. Measure the voltage at sunroof motor assembly connector D-32.




1. Disconnect sunroof motor assembly connector D-32 and measure the voltage available at the wiring harness side of the connector.




2. Measure the voltage between terminal 1 and ground.
- The voltage should equal approximately 12 volts (battery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery positive voltage)?

YES: Go to Step 4.

NO: Go to Step 3.













STEP 3. Check the harness wires between sunroof motor assembly connector D-32 (terminal 1) and fusible link (5).

NOTE: Also check intermediate connectors C-18, C-126, junction block connectors C-211 and C-225 for loose, corroded, or damaged terminals, or terminals pushed back in the connector. If intermediate connector C-18, C-126, junction block connector C-211 or C-225 is damaged, repair or replace the damaged components) as described in Harness Connector Inspection.

Q: Are the harness wires between sunroof motor assembly connector D-32 (terminal 1) and fusible link (5) in good condition?

YES: No action is necessary and testing is complete.

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. The sunroof should now work normally.

STEP 4. Check the ignition switch (IG2) circuit to the sunroof motor assembly. Measure the voltage at sunroof motor assembly connector D-32.




1. Disconnect sunroof motor assembly connector D-32 and measure the voltage available at the wiring harness side of the connector.
2. Turn the ignition switch to "ON" position.




3. Measure the voltage between terminal 2 and ground.
- The voltage should equal approximately 12 volts (battery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery positive voltage)?

YES: Go to Step 6.

NO: Go to Step 5.







STEP 5. Check the harness wires between sunroof motor assembly connector D-32 (terminal 2) and ignition switch (IG2).

NOTE: Also check junction block connectors C-211 and C-218 for loose, corroded, or damaged terminals, or terminals pushed back in the connector, check the wires. If junction block connector C-211 or C-218 are damaged, Repair or replace the damaged components) as described in Harness Connector Inspection.

Q: Are the harness wires between sunroof motor assembly connector D-32 (terminal 2) and ignition switch (IG2) in good condition?

YES: No action is necessary and testing is complete.

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. The sunroof should now work normally.

STEP 6. Check the ground circuit to the sunroof motor assembly. Measure at sunroof motor assembly connector D-32.




1. Disconnect sunroof motor assembly connector D-32 and measure the resistance available at the wiring harness side of the connector.




2. Measure the resistance between terminal 5 and ground.
- The resistance should equal 2 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES: Go to Step 8.

NO: Go to Step 7.




STEP 7. Check the harness wire between sunroof motor assembly connector D-32 (terminal 5) and ground.

Q: Is the harness wire between sunroof motor assembly connector D-32 (terminal 5) and ground in good condition?

YES: No action is necessary and testing is complete.

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. The sunroof should now work normally.




STEP 8. Check the sunroof switch connector D-31 for loose, corroded or damaged terminals, or terminals pushed back in the connector.

Q: Is sunroof switch connector D-31 in good condition?

YES: Go to Step 9.

NO: Repair or replace the damaged components). Refer to Harness Connector Inspection. The sunroof should now work normally.







STEP 9. Check the sunroof switch.

Q: Does the check above meet the table?

YES: Go to Step 10.

NO: Replace the sunroof switch (Refer to Sunroof assembly). The sunroof should now work normally.

STEP 10. Check the ground circuit to the sunroof switch. Measure the resistance at sunroof switch connector D-31.




1. Disconnect sunroof switch connector D-31 and measure the resistance available at the wiring component side of the connector.




2. Measure the resistance between terminal 4 and ground.
- The resistance should equal 2 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES: Replace the sunroof motor assembly (Refer to Sunroof assembly). The sunroof should now work normally.

NO: Go to Step 11.




STEP 11. Check the harness wire between sunroof switch connector D-31 (terminal 4) and ground.

Q: Is the harness wire between sunroof switch connector D-31 (terminal 4) and ground in good condition?

YES: No action is necessary and testing is complete.

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. The sunroof should now work normally.
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