Wipers/washers Acura MDX I

Scheme 1

Scheme 2

Scheme 3

Scheme 4

Scheme 5

Scheme 6

Scheme 7

Scheme 8

Scheme 9

Scheme 10

1. Remove the dashboard lower cover (see «DRIVER'S DASHBOARD UNDER COVER REMOVAL/INSTALLATION»(/acura/mdx/i-2000-2006/remont/exteriorinterior-trim/#dashboard) ).
2. Remove the steering column covers (see «STEERING COLUMN REMOVAL AND INSTALLATION»(/acura/mdx/i-2000-2006/remont/manual-power-steering/#power-steering-system__steering-column-removal-and-installation) ).
3. Disconnect the 8P connectors (A) from the wiper/washer switch (B), then remove the two screws and the switch.
4. Check for continuity between the terminals in each switch position according to the table.
5. If the continuity check is not as specified, replace the switch.

Scheme 11

1. Remove the rain sensor cover (A).
2. Disconnect the 10P connector (B) from the rain sensor/automatic wiper control unit (C).
3. 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 4.
4. 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 5. CONTROL UNIT INPUT TEST (WITH AUTOMATIC WIPER - CONNECTOR RECONNECTED) Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 8 BLK Under all conditions Check for voltage to ground: There should be less than 1 V. Poor ground (G652 (1) , G551 (2) ) An open in the wire 7 YEL Ignition switch ON (II) Check for voltage to ground: There should be battery voltage. Blown No. 9 (10 A) fuse in the driver's under-dash fuse/relay box An open in the wire 9 RED Ignition switch ON (II) Check for voltage to ground: There should be battery voltage. Blown No. 12 (30 A) fuse in the driver's under-dash fuse/relay box Faulty automatic wiper relay An open in the wire 3 GRN Ignition switch ON (II), and windshield wiper switch in INT Check for voltage to ground: There should be battery voltage. Blown No. 11 (10 A) fuse in the driver's under-dash fuse/relay box Faulty windshield wiper switch An open in the wire 4 BLU/WHT Ignition switch ON (II), and windshield wiper switch ON (LO) Check for voltage to ground: There should be about 0- 12 V, -0- 12 V alternately. NOTE: Use an analog ohmmeter. Blown No. 91 (7.5 A) fuse in the auxiliary fuse holder 2 Faulty windshield wiper motor An open in the wire 5 BLK/YEL Ignition switch ON (II), and windshield washer switch ON Check for voltage to ground: There should be battery voltage. Blown No. 11 (10 A) fuse in the driver's under-dash fuse/relay box Faulty windshield washer switch Faulty windshield washer motor An open in the wire (1) '03 model (2) '04-'06 models
5. Disconnect 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, the control unit must be faulty; replace it. CONTROL UNIT INPUT TEST (WITH AUTOMATIC WIPER - CONNECTOR DISCONNECTED) Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 10 GRN/RED Ignition switch ON (II) Check for voltage to ground: There should be battery voltage. Blown No. 12 (30 A) fuse in the driver's under-dash fuse/relay box Faulty wiper intermittent relay An open in the wire Attach to ground: The windshield wiper should run at low speed. Faulty automatic wiper relay Faulty wiper intermittent relay Faulty wiper/washer switch Faulty windshield wiper motor Poorground (G201, G301) An open in the wire 6 GRN/YEL Under all conditions Check for continuity to ground: There should be continuity. Poor ground (G401) Faulty wiper/washer switch An open in the wire

Without Automatic Wiper

Before testing the wiper/washer control functions, troubleshoot the multiplex control system (see TROUBLESHOOTING ).

Scheme 12

Scheme 13

1. Remove the driver's multiplex control unit from the driver's under-dash fuse/relay box, and disconnect its connector.
2. Inspect all 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 4.
3. With the driver's multiplex control unit still disconnected, make these input tests at the connector and driver's under-dash fuse/relay box sockets. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, driver's multiplex control unit must be faulty; replace it. CONTROL UNIT INPUT TEST (WITHOUT AUTOMATIC WIPER) Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained B11 (1) BLK Under all conditions Check for continuity to ground: There should be continuity. Poor ground (G501) An open in the wire A24 Fuse/relay box socket Ignition switch ON (II) Check for voltage to ground: There should be battery voltage. Blown No. 9 (10 A) fuse in the driver's under-dash fuse/relay box Faulty driver's under-dash fuse/relay box A3 Shift lever in P Check for continuity to ground: There should be continuity. Faulty transmission range switch An open in the wire A8 Brake pedal pressed Check for voltage to ground: There should be battery voltage. Blown No. 47 (20 A) fuse in the under-hood fuse/relay box Faulty brake pedal position switch An open in the wire B14 (1) BLU/WHT Under all conditions Check for continuity between the B14 terminal and No. 26 terminal of the PCM 32P connector B: There should be continuity. An open in the wire B15 (1) GRN/WHT (2) GRN/RED (3) Parking brake pedal pressed Check for continuity to ground: There should be continuity. Faulty parking brake switch An open in the wire B9 (1) GRN/YEL Intermittent dwell time control ring turned Check resistance between the terminals: It should vary from 0 to about 30 k ohm as the ring is turned. Faulty intermittent dwell time controller An open in the wire B10 (1) GRN/WHT A9 Fuse/relay box socket Ignition switch ON (II) and wiper switch in INT Check for voltage to ground: There should be battery voltage. Blown No. 11 (10 A) fuse in the driver's under-dash fuse/relay box Faulty wiper switch Faulty driver's under-dash fuse/relay box An open in the wire A11 Ignition switch ON (II) and INT switch OFF Check for voltage to ground: There should be battery voltage. Blown No. 12 (30 A) fuse in the driver's under-dash fuse/relay box Faulty intermittent wiper relay Faulty driver's under-dash fuse/relay box An open in the wire A21 Ignition switch ON (II) and washer switch ON Check for voltage to ground: There should be battery voltage. Blown No. 11 (10 A) fuse in the driver's under-dash fuse/relay box Faulty washer switch Faulty driver's under-dash fuse/relay box An open in the wire A23 Ignition switch ON (II) and wiper in PARK position Check for voltage to ground: There should be battery voltage. Blown No. 12 (30 A) fuse in the driver's under-dash fuse/relay box Faulty wiper motor Faulty driver's under-dash fuse/relay box An open in the wire (1) Driver's multiplex control unit connector B (2) '03 model (3) '04-'06 models

Scheme 14

1. Remove the left rear side trim panel (see «TRIM REMOVAL/INSTALLATION - REAR SIDE LOWER AREA»(/acura/mdx/i-2000-2006/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-rear-side-lower) ).
2. Disconnect the 8P connector (A) from the rear window wiper intermittent control unit (B).
3. 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 4.
4. Reconnect the connector and make these input tests at the connectors. 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 5. REAR WINDOW WIPER INTERMITTENT CONTROL UNIT INPUT TEST (1 OF 2) Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 1 BLK Under all conditions Check for voltage to ground: There should be less than 1 V. Poor ground (G602) An open in the wire 3 LT GRN/BLK Ignition switch ON (II) and rear window wiper in parked position Check for voltage to ground: There should be battery voltage. Blown No. 11 (10 A) fuse in the driver's under-dash fuse/relay box Faulty rear window wiper motor An open in the wire 4 BLU/WHT Ignition switch ON (II) and rear window wiper switch ON Check for voltage to ground: There should be battery voltage. Blown No. 11 (10 A) fuse in the driver's under-dash fuse/relay box Faulty wiper/washer switch An open in the wire 5 GRN/YEL Ignition switch ON (II) and rear window washer switch ON Check for voltage to ground: There should be battery voltage. 7 BLK/YEL Ignition switch ON (II) Check for voltage to ground: There should be battery voltage. Blown No. 11 (10 A) fuse in the driver's under-dash fuse/relay box An open in the wire
5. Disconnect the 8P connector, and make this test at the connector. If the test indicates a problem, find and correct the cause, then recheck the system. If the input test proves OK, the control unit must be faulty; replace it. REAR WINDOW WIPER INTERMITTENT CONTROL UNIT INPUT TEST (2 OF 2) Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained 8 GRN Ignition switch ON (II) Attach to ground: The rear window wiper motor should run. Blown No. 11 (10 A) fuse in the driver's under-dash fuse/relay box Faulty rear window wiper motor An open in the wire

Scheme 15

Scheme 16

1. Remove the cowl cover (see «WIPER MOTOR REPLACEMENT»(/acura/mdx/i-2000-2006/remont/wiperwasher-systems/#wiperswashers) ).
2. Disconnect the wiper motor connector (A) from the wiper motor (B).
3. Test the motor by connecting battery power and ground according to (Scheme 16).
4. Connect an analog voltmeter between the No. 5 [No. 4] (+) and No.3 [No. 1] (-) terminals, and run the motor at low or high speed. The voltmeter should indicate 0 V and 4 V or more alternately. [ ]: '05-'06 models
5. If the voltmeter does not indicate as specified, replace the windshield wiper motor.

Scheme 17

1. Remove the tailgate trim panel (see «TRIM REMOVAL/INSTALLATION - TAILGATE AREA»(/acura/mdx/i-2000-2006/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-tailgate-area) ).
2. Disconnect the 4P connector (A) from the rear window wiper motor (B).
3. Test the motor by connecting battery power to the wiper motor 4P connector No. 1 terminal and grounding the No. 3 terminal. The motor should run.
4. Connect an analog voltmeter between the No. 4 (+) and No. 2 (-) terminals, and run the motor. The voltmeter should indicate 0 V and 4 V or more alternately.
5. If the voltmeter does not indicate as specified, replace the rear window wiper motor.

Scheme 18

1. Remove the right inner fender (see «FRONT INNER FENDER REPLACEMENT»(/acura/mdx/i-2000-2006/remont/exterior-body-panels/#fenderwell__front-inner-fender-replacement) ).
2. Disconnect the 2P connectors (A) from the washer motors (B).
3. Test the washer motor by connecting battery power to the No. 1 terminal and ground to the No. 2 terminal. The motor should run.
4. If the motor does not run or fails to run smoothly, replace it. NOTE: If the motor runs smoothly, but little or no washer fluid is pumped, check for a disconnected or blocked washer hose, or a clogged washer motor outlet.

Scheme 19

1. Remove the right inner fender (see «FRONT INNER FENDER REPLACEMENT»(/acura/mdx/i-2000-2006/remont/exterior-body-panels/#fenderwell__front-inner-fender-replacement) ).
2. Disconnect the 2P connector (A) from the washer fluid level switch (B).
3. Pull the switch out of the reservoir. NOTE: Fluid may flow out of the opening.
4. Check for continuity between the No. 1 and No. 2 terminals in each float switch position (C). There should be continuity when the float is down. There should be no continuity when the float is up.
5. If the continuity is not as specified, replace the switch.

Scheme 20

Scheme 21

Scheme 22

Scheme 23

1. Remove the nuts (A) and the windshield wiper arms (B).
2. Remove the hood seal (A) and cowl cover (B).
3. Disconnect the 5P connector (A) from the windshield wiper motor (B).
4. Remove the mounting bolts and the wiper linkage assembly (C).
5. Scribe a line (A) across the link and windshield wiper linkage to show the original adjustment. Separate the windshield wiper linkage (B) from the wiper motor (C).
6. Install in the reverse order of removal, and note these items: Apply multipurpose grease to the moving parts. Before reinstalling the wiper arms, turn the wiper switch ON, then OFF to return the wiper shafts to the park position. If necessary, replace any damaged clips. Make sure the wiper motor operates properly.

Scheme 24

Scheme 25

1. Remove the cap (A), mounting nut (B) and rear window wiper arm (C).
2. Open the tailgate and remove the tailgate lower trim panel (see «TRIM REMOVAL/INSTALLATION - TAILGATE AREA»(/acura/mdx/i-2000-2006/remont/exteriorinterior-trim/#interior-trim__trim-removalinstallation-tailgate-area) ).
3. Disconnect the 4P connector (A) from the rear window wiper motor (B).
4. Remove the mounting bolts and the wiper motor.
5. Install in the reverse order of removal.

Scheme 26

Scheme 27

1. Remove the right inner fender (see «FRONT INNER FENDER REPLACEMENT»(/acura/mdx/i-2000-2006/remont/exterior-body-panels/#fenderwell__front-inner-fender-replacement) ).
2. Disconnect the washer tubes (A).
3. Disconnect the 2P connectors (B) from the washer motors (C) and the washer fluid level switch (D).
4. Remove the three mounting bolts and washer reservoir.
5. Install in the reverse order of removal. Make sure the washer motors operate properly.

Scheme 28

Scheme 29

1. Remove the right inner fender (see «FRONT INNER FENDER REPLACEMENT»(/acura/mdx/i-2000-2006/remont/exterior-body-panels/#fenderwell__front-inner-fender-replacement) ).
2. Remove the washer nozzles and clips, then remove the tubes. NOTE: The illustration shows '03 model.
3. Install in the reverse order of removal. Take care not to pinch the washer tubes. Check the washers operation.

See also:
• DRIVER'S DASHBOARD UNDER COVER REMOVAL/INSTALLATION
• STEERING COLUMN REMOVAL AND INSTALLATION
• TROUBLESHOOTING
• TRIM REMOVAL/INSTALLATION - REAR SIDE LOWER AREA
• TRIM REMOVAL/INSTALLATION - TAILGATE AREA
• FRONT INNER FENDER REPLACEMENT
• WIPER MOTOR REPLACEMENT