Scheme 34
Symptom Troubleshooting Index
| Symptom | Diagnostic procedure |
|---|---|
| Water leaks from moonroof | Check for a clogged or detached drain tube Check the glass position adjustment (see GLASS POSITION ADJUSTMENT ) Check for a defective or an improperly installed glass weatherstrip or drain channel Check for a gap between the dram seal and the roof panel |
| Wind noise from moonroof | Check for excessive clearance between the glass weatherstrip and the roof panel Check the glass position adjustment (see GLASS POSITION ADJUSTMENT ) |
| Motor noise from moonroof | Check for a loose motor Check for a worn gear or bearing Check for a deformed cable assembly Check for dirt or debris |
| Moonroof glass does not move, but motor turns | Check for foreign matter stuck between the guide rail and the slider Make sure the cable assembly is attached properly Check for a loose inner cable Check for a defective gear or inner cable |
| Moonroof glass does not move and motor does not turn (glass can be moved with 4 mm hexagonal wrench) | Check for a run down battery Check for a blown fuse Check for a faulty moonroof switch Check for a defective motor control unit |
| Moonroof glass does not stop at proper flush closed position | Reset the moonroof control unit (see RESETTING THE MOONROOF CONTROL UNIT ) Check the glass position adjustment (see GLASS POSITION ADJUSTMENT ) |
| Moonroof glass moves in a jerking motion (moves 40 mm (1 57 in), stops for 0 4 seconds, and repeats) | Reset the moonroof control unit (see RESETTING THE MOONROOF CONTROL UNIT ) |
| During auto close operation, moonroof glass reverses when no object is trapped | Check for dirt and debris in the track Reset the moonroof control unit (see RESETTING THE MOONROOF CONTROL UNIT ) |
| Moonroof glass moves, but there is no AUTO function | Reset the moonroof control unit (see RESETTING THE MOONROOF CONTROL UNIT ) |
SYMPTOM TROUBLESHOOTING REFERENCE CHART
Resetting the Moonroof Control Unit
Reset the moonroof after doing any of the following actions
- The moonroof was moved manually while the battery was dead or disconnected
- The moonroof motor was replaced with a new one
- Any components related to the moonroof were replaced or removed and reinstalled
- Wind deflector
- Moonroof glass
- Moonroof seal
- Moonroof glass bracket
- Moonroof cables, etc
To reset the moonroof control unit, do these steps
- Close the driver's door, and leave it closed until the procedure is complete
- Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
- Press and hold the tilt switch, and turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
- Release the tilt switch, and turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
- Repeat steps 3 and 4 four times
- Check if the AUTO OPEN and AUTO CLOSE functions still work If they still work, the AUTO functions have not been cleared, go back to step 1 If the AUTO functions have been cleared, go to step 7
- Press and hold the moonroof open switch for at least 3 additional seconds after the moonroof is fully opened
- Press and hold the moonroof close switch for at least 3 additional seconds after the moonroof is fully closed (tilted)
- Confirm that the moonroof control unit is reset by using the moonroof AUTO OPEN and AUTO CLOSE function
Scheme 35
Moonroof Control Unit Input Test
Note. If the moonroof works OK manually, but will not work in AUTO, or reverses frequently (obstacle detection), reset the moonroof (see RESETTING THE MOONROOF CONTROL UNIT ) before proceeding with the input test
Scheme 36
- Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
- Remove the headliner (see «HEADLINER REMOVAL/INSTALLATION»(/acura/tl/iv-2008-2011/remont/exteriorinterior-trim/#interior-trim__headliner-removalinstallation) )
- Disconnect the 14P connector (A) from the moonroof control unit/motor (B)
- 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
- With the connector still disconnected, do this input test at the following connector If any test indicates a problem, find and correct the cause, then recheck the system If the input test proves OK, go to step 6 WIRE TEST CONDITION REFERENCE CHART Cavity Wire Test condition Test Desired result Possible cause if desired result is not obtained 11 PNK Under all conditions Check for continuity between moonroof switch 14P connector terminal No 11 and power window master switch 37P connector terminal No 27 There should be continuity An open in the UART wire Check for continuity between moonroof switch 14P connector terminal No 11 and body ground There should be no continuity A short to ground in the wire
- Reconnect the connector to the control unit, and do these input tests at the following 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 TEST CONDITION REFERENCE CHART Cavity Wire Test condition Test. Desired result Possible cause if desired result is not obtained 7 WHT Under all conditions Measure the voltage to ground There should be battery voltage Blown No 20 (20 A) fuse in the driver's under-dash fuse/relay box An open or high resistance in the wire 8 BLK In all ignition switch positions or all power modes Measure the voltage to ground There should be less than 0 2V Poor ground (G403) or open in ground wire An open or high resistance in the wire 2 BLU Ignition switch to ON (II), or power mode ON, moonroof switch in CLOSE position Measure the voltage to ground There should be less than 0 2V Faulty moonroof switch Poor ground (G501) or open in ground wire An open or high resistance in the wire High resistance between moonroof control unit terminal No 2 and moonroof switch terminal No 2 Ignition switch to ON (II), or power mode ON, moonroof switch released Measure the voltage to ground There should be battery voltage Blown No 20 (20 A) fuse in the driver's under-dash fuse/relay box Faulty driver's under-dash fuse/relay box Faulty moonroof switch A short to ground in the wire 3 LT GRN Ignition switch to ON (II), or power mode ON, moonroof switch in TILT position Measure the voltage to ground There should be less than 0 2V Faulty moonroof switch Poor ground (G501) or open in ground wire An open or high resistance in the wire High resistance between moonroof control unit terminal No 3 and moonroof switch terminal No 2 Ignition switch to ON (II), or power mode ON, moonroof switch released Measure the voltage to ground There should be battery voltage Blown No 20 (20 A) fuse in the driver's under-dash fuse/relay box Faulty driver's under-dash fuse/relay box Faulty moonroof switch A short to ground in the wire 4 LT BLU Ignition switch to ON (II), or power mode ON, moonroof switch in OPEN position Measure the voltage to ground There should be less than 0 2V Faulty moonroof switch Poor ground (G501) or open in ground wire An open or high resistance in the wire High resistance between moonroof control unit terminal No 4 and moonroof switch terminal No 2 Ignition switch to ON (II), or power mode ON, moonroof switch released Measure the voltage to ground There should be battery voltage Blown No 20 (20 A) fuse in the driver's under-dash fuse/relay box Faulty driver's under-dash fuse/relay box Faulty moon roof switch A short to ground in the wire 9 PUR Ignition switch to ON (II), or power mode ON, moonroof switch in AUTO OPEN or AUTO CLOSE position Measure the voltage to ground There should be less than 0 2V Faulty moonroof switch Poor ground (G501) or open in ground wire An open or high resistance in the wire High resistance between moonroof control unit terminal No 9 and moonroof switch terminal No 2 Ignition switch to ON (II), or power mode ON, moonroof switch released Measure the voltage to ground There should be battery voltage Blown No 20 (20 A) fuse in the driver's under-dash fuse/relay box Faulty driver's under-dash fuse/relay box Faulty moonroof switch A short to ground in the wire
- If all the input tests are OK and multiple failures are found, replace the moonroof control unit/motor assembly (see «MOTOR REPLACEMENT»(/acura/tl/iv-2008-2011/remont/sun-rooft-topconvertible-top/#moonroof) ) If the problem is related to the key-off operation, go to the driver's MICU input test (see «CONTROL UNIT INPUT TEST»(/acura/tl/iv-2008-2011/remont/door-locks-anti-theft-systems/#keylesspower-door-lockssecurity-system__control-unit-input-test) ), and power window master switch input test (see «POWER WINDOW MASTER SWITCH INPUT TEST»(/acura/tl/iv-2008-2011/remont/windows/#power-window-system__power-window-master-switch-input-test) )
Scheme 37
Scheme 38
- Remove the roof console (see «ROOF CONSOLE INPUT TEST/REPLACEMENT»(/acura/tl/iv-2008-2011/remont/interiorillumination-lights/#interior-lights) )
- Remove the two screws (A) then pull out the moonroof switch (B) from the roof console (C)
- Check for continuity between the terminals in each switch position according to the table
- If the continuity is not as specified, replace the switch
- Install the switch and light in the reverse order of removal