FixVault
Home › Acura › 2007 › RL › Repair and Diagnosis › External Pages › Different car › Section 64 (Power Moonroof) › Moonroof Control Unit Input Test

Moonroof Control Unit Input Test

WARNING: This page is about a different car, the 2008 Acura TL and 2007 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.

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.

  1. Turn the ignition switch OFF.
  2. Remove the headliner (see HEADLINER REMOVAL/INSTALLATION ).
  3. Disconnect the 10P connector (A) from the moonroof control unit (B).
    Fig 1: Identifying 10P Connector And Moonroof Control Unit
    G05462822Courtesy of AMERICAN HONDA MOTOR CO., INC.
  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.
      TESTING CONDITION CHART

      Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
      8 GRN Under all conditions Measure the 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
      • A short to ground in the wire
      • An open in the wire
      1 BLK Under all conditions Measure the 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.
      TESTING CONDITION CHART

      Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
      3 GRN/WHT Disconnect under-dash fuse/relay box connector POOP) 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
      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, then disconnect the ECM/PCM connector E (31P), and make these input tests at the connector.
    TESTING CONDITION CHART

    Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained
    7 LT BLU Under all conditions Check for continuity between the No. 7 terminal and the ECM/PCM connector E 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 Disconnect door multiplex control unit connector A (22P) Check for continuity between the No. 10 terminal and the door multiplex control unit A2 terminal:
    There should be continuity.
    • An open in the wire
    • Faulty under-dash fuse/ relay box
    Check for continuity between the No. 10 terminal and body ground:
    There should be no continuity.    		 A short to ground in the wire
About FixVault