2004 Acura TL AutomaticFACTORY OEM SERVICE PROCEDURE

Master Switch Input Test

NOTE: Make sure the ignition switch is OFF before disconnecting the under-dash fuse/relay box connectors.
  1. Before testing the power windows, troubleshoot the multiplex integrated control system using B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).
  2. Turn the ignition switch OFF.
  3. Remove the power window master switch (see REAR WINDOW MOTOR TEST ).
  4. Disconnect the 22P connector (A) and 14P connector (B) from the power window master switch (C).
    Fig 1: Identifying 22P Connector (A), 14P Connector (B) And Power Window Master Switch (C)
    G03662173Courtesy of AMERICAN HONDA MOTOR CO., INC.
  5. 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 6.
  6. Reconnect the connectors to the switch. Turn the ignition switch ON (II) and perform the following input tests.
    • 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.
    MASTER SWITCH INPUT TEST TABLE

    Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained
    B2 RED/WHT Ignition switch ON (II) Check for voltage to ground:
    There should be battery voltage.
    • Faulty power window master switch
    • A short to ground in the wire
    B10 LT GRN Under all conditions Check for voltage to ground:
    There should be less than 1 V.
    • Faulty power window master switch
    • An open in the wire
    B11 GRN/WHT Under all conditions Check for voltage to ground:
    There should be battery voltage.
    • Blown No. 23 (P/W) (50 A) fuse in the under-hood fuse/relay box
    • Blown No. 27 (30 A) fuse in the under-dash fuse/relay box
    • An open in the wire
    • Faulty under-dash fuse/relay box
    BH BLK Under all conditions Check for voltage to ground:
    There should be less than 1 V.
    • Poor ground (G501)
    • An open in the wire
    B8 BLU Ignition switch ON (II), and the driver's window switch moving up or down Check for voltage between the B8 and B10 terminals:
    There should be 0 V-about 5 V- 0 V-about 5 V repeatedly (a digital voltmeter reads about 2.5 V while the window moves).
    • Blown No. 7 (7.5 A) fuse in the under-dash fuse/relay box
    • Blown No. 27 (30 A) fuse in the under-dash fuse/relay box
    • An open in the wire (RED/WHT, BLU, LT GRN, ORN)
    • A short to ground in the wire
    • Faulty driver's window motor
    • Faulty power window master switch
    B7 ORN Ignition switch ON (II), and the driver's window switch moving up or down Check for voltage between the B7 and B10 terminals:
    There should be 0 V-about 5 V- 0 V-about 5 V repeatedly (a digital voltmeter reads about 2.5 V while the window moves).
    A18 WHT Driver's door key cylinder switch in UNLOCK Check for voltage to ground: There should be less than 1 V.
    • Faulty driver's door key cylinder switch
    • Poor ground (G503, G601)
    • An open in the wire
    Driver's door key cylinder switch in neutral Check for voltage to ground:
    There should be 5 V or more.
    • A short to ground in the wire
    • Faulty driver's door key cylinder switch
    Driver's door key cylinder switch in LOCK Check for voltage to ground:
    There should be 5 V or more.
    A19 WHT/RED Driver's door key cylinder switch in LOCK Check for voltage to ground:
    There should be less than 1 V.
    • Faulty driver's door key cylinder switch
    • Poor ground (G503, G601)
    • An open in the wire
    Driver's door key cylinder switch in neutral Check for voltage to ground:
    There should be 5 V or more.
    • A short to ground in the wire
    • Faulty driver's door key cylinder switch
    Driver's door key cylinder switch in UNLOCK Check for voltage to ground:
    There should be 5 V or more.
  7. Disconnect the power window master switch connector A (22P), 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 the power window master switch.
    MASTER SWITCH INPUT TEST TABLE

    Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained
    B9 WHT/GRN Under all conditions Connect B9 terminal to ground. Check for voltage at under-dash fuse/relay box No. 24 (20 A) fuse: There should be battery voltage.
    • Blown No. 23 (P/W) (50 A) fuse in the under-hood fuse/relay box.
    • Faulty power window relay
    • Faulty under-dash fuse/relay box
    • An open in the wire
    B12 RED/YEL Connect the B11 and B13 terminals with a jumper wire, and connect B12 terminal to body ground. Check the driver's window motor operation:
    The window should go up.
    • Blown No. 27 (30 A) fuse in the under-dash fuse/relay box
    • An open in the wire
    • Faulty driver's power window motor
    B13 RED/BLK Connect the B11 and B12 terminals with a jumper wire, and connect B13 terminal to body ground. Check for driver's window motor operation:
    The window should go down.
    A8 BRN/WHT Connect the B11 and A8 terminals with a jumper wire and connect B9 to body ground with a jumper wire. Check the left rear window motor operation:
    The window should go up.
    • Poor ground (G503, G601)
    • Blown No. 24 (20 A) fuse in the under-dash fuse/relay box
    • An open in the wire
    • Faulty power window relay
    • Faulty left rear power window switch
    • Faulty left rear power window motor
    A9 BRN Connect the B11 and A9 terminals with a jumper wire and connect B9 to body ground with a jumper wire. Check the left rear window motor operation:
    The window should go down.
    A20 BLU/ORN Connect the B11 and A20 terminals with a jumper wire and connect B9 to body ground with a jumper wire. Check the right rear window motor operation:
    The window should go up.
    • Poor ground (G602)
    • Blown No. 25 (20 A) fuse in the under-dash fuse/relay box
    • An open in the wire
    • Faulty power window relay
    • Faulty right rear power window switch
    • Faulty right rear power window motor
    A21 BRN/YEL Connect the B11 and A21 terminals with a jumper wire and connect B9 to body ground with a jumper wire. Check the right rear window motor operation:
    The window should go down.
    B1 GRN/WHT Under all conditions Check for continuity between the B1 terminal and under-dash fuse/relay box connector P terminal No. 12: There should be continuity.
    • Faulty under-dash fuse/relay box
    • An open in the wire
    B4 LT GRN/BLK Under all conditions Check for continuity between the B4 terminal and front passenger's power window switch connector terminal No. 4:
    There should be continuity.    		 An open in the wire
    Front passenger's power window switch connector disconnected. Check for continuity between the B4 terminal and body ground:
    There should be no continuity.    		 A short to ground in the wire
  8. Reset the power window control unit (see RESETTING THE POWER WINDOW CONTROL UNIT ).
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