Power Moonroof Acura RL II

Scheme 32

Resetting the Moonroof Control Unit

Resetting the moonroof is required when any of the following have occurred.

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

To reset the moonroof control unit, do these steps.

1. Close all doors and trunk.
2. Turn the ignition switch OFF.
3. Press and hold the tilt switch, and turn the ignition switch ON (II).
4. Release the tilt switch, and turn the ignition switch OFF.
5. Repeat steps 2 and 3 four times.
6. Press and hold the moonroof open switch until 3 seconds after the moonroof is fully opened.
7. Press and hold the moonroof close switch until 3 seconds after the moonroof is fully closed (tilted).
8. Confirm that the moonroof control unit is reset by using the moonroof AUTO OPEN and AUTO CLOSE function.

Scheme 33

Scheme 34

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 reverses frequently (pinch detection), do the moonroof calibration (see RESETTING THE MOONROOF CONTROL UNIT ) before proceeding with the input test.

Scheme 35

1. Turn the ignition switch OFF.
2. Remove the headliner (see «HEADLINER REMOVAL/INSTALLATION»(/acura/rl/ii-2004-2008/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 to 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, go to step 6. WIRE CAVITY REFERENCE CHART Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained 10 BLK Under all conditions Measure the voltage to ground: There should be less then 0.5 V. Poor ground (G601) An open in the wire 1 GRIM Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 28 (20 A) fuse in the driver's under-dash fuse/relay box An open in the wire 6 LT GRN Moonroof switch in OPEN (AUTO) or CLOSE (AUTO) position Measure the voltage to ground: There should be battery voltage. Blown No. 15 (40 A) fuse in the under-hood fuse/relay box Blown No. 7 (10 A) fuse in the driver's under-dash fuse/relay box Faulty moonroof switch Faulty roof console An open in the wire 7 ORN Moonroof switch in TILT position Measure the voltage to ground: There should be battery voltage. Blown No. 15 (40 A) fuse in the under-hood fuse/relay box Blown No. 7 (10 A) fuse in the driver's under-dash fuse/relay box Faulty moonroof switch Faulty roof console An open in the wire 8 PNK Moonroof switch in CLOSE position Measure the voltage to ground: There should be battery voltage. Blown No. 15(40 A) fuse in the under-hood fuse/relay box Blown No. 7 (10 A) fuse in the driver's under-dash fuse/relay box Faulty moonroof switch Faulty roof console An open in the wire 9 LT BLU Moonroof switch in OPEN position Measure the voltage to ground: There should be battery voltage. Blown No. 15 (40 A) fuse in the under-hood fuse/relay box Blown No. 7 (10 A) fuse in the driver's under-dash fuse/relay box Faulty moonroof switch Faulty roof console An open in the wire
6. Disconnect the 10P 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, go to step 7. WIRE CAVITY REFERENCE CHART Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained 4 GRY Under all conditions Check for continuity between the No. 4 terminal and driver's MPCS unit connector A (40P) No. 8 terminal: There should be continuity. An open in the wire Under all conditions Check for continuity between the No. 4 terminal and front passenger's MPCS unit connector A (28P) No. 4 terminal: There should be continuity. An open in the wire
7. If all the input tests are OK and multiple failures are found, replace the moonroof motor assembly. If the problem is related to the key-off operation, go to the driver's MPCS unit input test (see «CONTROL UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/door-locks-anti-theft-systems/#keylesspower-door-lockssecurity-system__control-unit-input-test) ), and front passenger's MPCS unit input test (see «CONTROL UNIT INPUT TEST»(/acura/rl/ii-2004-2008/remont/door-locks-anti-theft-systems/#keylesspower-door-lockssecurity-system__control-unit-input-test) ).

Scheme 36

Scheme 37

Scheme 38

1. Remove the roof console (see «ROOF CONSOLE REPLACEMENT»(/acura/rl/ii-2004-2008/remont/interiorillumination-lights/#interior-lights) ).
2. Remove the HomeLink unit from the top of the roof console.
3. Remove the five screws from the roof console (A) and remove the rear cover (B).
4. Disconnect the 7P connector (A) from the moonroof switch (B), then remove the two screws and switch.
5. Check for continuity between the terminals in each switch position (Scheme 38)
6. If the continuity is not as specified, replace the illumination bulb (C) or the switch.
7. If the switch is OK, but there is a malfunction related to the moonroof switch operation, replace the roof console (see «ROOF CONSOLE REPLACEMENT»(/acura/rl/ii-2004-2008/remont/interiorillumination-lights/#interior-lights) ).
8. Install in the reverse order of removal.

See also:
• TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
• HEADLINER REMOVAL/INSTALLATION
• CONTROL UNIT INPUT TEST
• ROOF CONSOLE REPLACEMENT
• RESETTING THE MOONROOF CONTROL UNIT