Power Moonroof Acura TL III

Scheme 28

Moonroof Calibration

Note. The moonroof calibration must be performed when any of the following events have occurred.

1. The moonroof is manually moved with the battery dead or disconnected.
2. The moonroof motor is replaced with a new one.
3. Any component related to the moonroof replaced. - Wind deflector - Moonroof glass - Moonroof seal - Moonroof glass bracket - Moonroof cables, etc.

To calibrate the moonroof, perform the following steps

1. Turn the ignition switch ON (II).
2. Open the moonroof to full open position and release the open button.
3. Pull and hold the moonroof OPEN switch until the moonroof glass moves slightly back to its mechanical stop and then forward again slightly. New Motor Other than new motor: This will take about 13 seconds.
4. Release the OPEN switch.
5. Within 5 seconds, pull and hold the moonroof OPEN switch again.
6. In about 3 seconds the moonroof glass will begin to slide closed.
7. Continue to hold the open button until the glass moves to closed position, tilts up, and returns to the closed position again.
8. Test the moonroof auto operation.

Scheme 29

Moonroof Control Unit Input Test

Before troubleshooting the moonroof circuit, troubleshoot the multiplex integrated control system using B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

If the moonroof works OK manually, but will not work in AUTO, or reverse frequently (pinch detection), do the moonroof calibration (see MOONROOF CALIBRATION ) before proceeding with the input test.

Scheme 30

1. Turn the ignition switch OFF.
2. Remove the headliner (see «HEADLINER REMOVAL/INSTALLATION»(/acura/tl/iii-2003-2006/remont/exteriorinterior-trim/#interior-trim__headliner-removalinstallation) ).
3. Disconnect the 10P connector (A) from the moonroof control unit (B).
4. Inspect the connector and socket terminals to be sure they are all making good contact. If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system. If the terminals look OK, go to step 5.
5. Reconnect the connector, and make these input tests at the connector. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, go to step 6. CONTROL UNIT INPUT TEST (CONNECTOR RECONNECTED) Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 8 GRN Under all conditions Check for voltage to ground: There should be battery voltage. Blown No. 28 (20 A) fuse in the under-dash fuse/relay box Faulty under-dash fuse/ relay box An open in the wire 1 BLK Under all conditions Check for voltage to ground: There should be less than 1 V. Poor ground (G501) An open in the wire
6. Disconnect the connector from the control unit, and make these input tests at the connector. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, the control unit must be faulty, replace it. CONTROL UNIT INPUT TEST (CONNECTOR DISCONNECTED) Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 3 GRN/WHT Under all conditions Check for continuity between the No. 3 terminal and the multiplex integrated control unit P12 terminal: There should be continuity. An open in the wire Disconnect the under-dash fuse/ relay box connector P (30P) Check for continuity between the No. 3 terminal and body ground: There should be no continuity. A short to ground in the wire Faulty moonroof switch 4 GRN/ORN Moonroof switch in TILT position Check for continuity between the No. 3 and No. 4 terminals: There should be continuity. Faulty moonroof switch An open in the wire 9 GRY/BLU Moonroof switch in OPEN position Check for continuity between the No. 3 and No. 9 terminals: There should be continuity. Faulty moonroof switch An open in the wire 6 LT GRN/ BLK Moonroof switch in CLOSE position Check for continuity between the No. 3 and No. 6 terminals: There should be continuity. Faulty moonroof switch An open in the wire 5 GRY/RED Moonroof switch in AUTO OPEN or AUTO CLOSE position Check for continuity between the No. 3 and No. 5 terminals: There should be continuity. Faulty moon roof switch An open in the wire
7. Jump the SCS line with the HDS disconnect the ECM/PCM connector A (31P), and make these input tests at the connector. CONTROL UNIT INPUT TEST Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 7 BLU/WHT Under all conditions Check for continuity between the No. 7 terminal and the ECM/ PCM connector A No. 11 terminal: There should be continuity. An open in the wire Check for continuity between the No. 7 terminal and body ground: There should be no continuity. A short to ground in the wire 10 GRN/BLK Under all conditions Check for continuity between the No. 10 terminal and the power window master switch (door multiplex control unit) A2 terminal: There should be continuity. An open in the wire Faulty under-dash fuse/ relay box Disconnect power window master switch connector A (22P) Check for continuity between the No. 10 terminal and body ground: There should be no continuity. A short to ground in the wire

Scheme 31

Scheme 32

1. Carefully pry out the moonroof switch (A).
2. Disconnect the 7P connector (B) from the moonroof switch.
3. Check for continuity between the terminals in each switch position according to (Scheme 32).
4. If the continuity check is not as specified, check the bulb. If the bulb is OK, replace the switch.

See also:
• TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
• HEADLINER REMOVAL/INSTALLATION
• MOONROOF CALIBRATION