Wipers/washers: Diagnosis Honda Pilot II

MICU Input Test

Note. Before testing, troubleshoot the multiplex integrated control unit first, using B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ), and check the No. 38 (30 A) fuse in the under-dash fuse/relay box.

Scheme 4

1. Turn the ignition switch to LOCK (0), and remove the driver's dashboard lower cover (see «DRIVER'S DASHBOARD LOWER COVER REMOVAL/INSTALLATION»(ref-333587-S27385002872009072100000) ).
2. Disconnect the under-dash fuse/relay box connectors E, F, R, S and T. NOTE: All connector views are shown from the wire side of female terminals.
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. With the connector still disconnected, do these input tests at the following 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 . TEST CONDITION TABLE Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained F18 BLU Under all conditions Connect battery power to terminal F18: The windshield wiper motor should run at low speed. Poor ground (G303) Faulty windshield wiper motor An open in the wire F19 GRN Under all conditions Connect battery power to terminal F19: The windshield wiper motor should run at high speed. Poor ground (G303) Faulty windshield wiper motor An open in the wire F32 RED Run the windshield wiper motor by connecting battery power to the F18 terminal. Check for continuity to ground: The needle of the ohmmeter should pulse. NOTE: Use an ohmmeter. Faulty windshield wiper motor An open in the wire F33 ORN Under all conditions Connect battery power to terminal F33: The windshield washer motor should work. Poor ground (G201*1, G202*2) Faulty windshield washer motor An open in the wire F34 RED Under all conditions Connect battery power to terminal F34: The rear window washer motor should work. Poor ground (G201) Faulty rear window washer motor An open in the wire S6 . S4 BLU . BLK/WHT Intermittent dwell timer turned Check resistance between the terminals: There resistance should vary between 0 to 1 kohms. Faulty wiper/washer switch An open in the wire *1: '09-10 MODELS *2 '11 MODEL
5. Reconnect the connectors to the under-dash fuse/relay box, turn the ignition switch to ON (II), and do these input tests at the following connectors. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, the MICU must be faulty; replace the under-dash fuse/relay box (see «REMOVAL AND INSTALLATION»(ref-333607-S23852302332009072100000) ). TEST CONDITION TABLE Cavity Wire Test condition Test: Desired result Possible cause if desired result is not obtained E6 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V. Poor ground (G401) An open in the wire T34 F20 BLK Under all conditions Measure the voltage to ground: There should be less than 0.5 V. Poor ground (G501) An open in the wire S10 . S4 ORN . BLK/WHT Wiper switch ON at INT or LO position Measure the voltage between terminals S10 and S4: There should be less than 1 V. Faulty wiper/washer switch An open in the wire Wiper switch OFF Measure the voltage between terminals S10 and S4: There should be more than 5V. Faulty wiper/washer switch A short to ground in the wire S20 . S4 RED/BLK . BLK/WHT Wiper switch ON at LO or HI position Measure the voltage between terminals S20 and S4: There should be less than 1 V. Faulty wiper/washer switch An open in the wire Wiper switch OFF Measure the voltage between terminals S20 and S4: There should be more than 5 V. Faulty wiper/washer switch A short to ground in the wire S16 . S4 GRN . BLK/WHT Wiper switch ON at MIST position Measure the voltage between terminals S16 and S4: There should be less than 1 V. Faulty wiper/washer switch An open in the wire Wiper switch OFF Measure the voltage between terminals S16 and S4: There should be more than 5 V. Faulty wiper/washer switch A short to ground in the wire S17 . S4 YEL . BLK/WHT Washer switch ON Measure the voltage between terminals S17 and S4: There should be less than 1 V. Faulty wiper/washer switch An open in the wire Wiper switch OFF Measure the voltage between terminals S17 and S4: There should be more than 5 V. Faulty wiper/washer switch A short to ground in the wire S3 YEL/BLK Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 13 (10 A) fuse in the auxiliary under-hood fuse/relay box Faulty rear window wiper motor relay 1 (forward) An open in the wire Attach to ground: The rear window wiper motor should work (forward). Poor ground (G303) Faulty rear window wiper motor Faulty rear window wiper motor relay 2 (backward) An open in the wire R12 YEL/GRN Under all conditions Measure the voltage to ground: There should be battery voltage. Blown No. 13 (10 A) fuse in the auxiliary under-hood fuse/relay box Faulty rear window wiper motor relay 2 (backward) An open in the wire Attach to ground: The rear window wiper motor should work (backward). Poor ground (G303) Faulty rear window wiper motor Faulty rear window wiper motor relay 1 (forward) An open in the wire S2 YEL Rear wiper in park position Measure the voltage to ground: There should be less than 1 V. Poor ground (G601) Faulty rear window wiper motor An open in the wire Rear wiper in any other position than park position Measure the voltage to ground: There should be more than 5 V. Faulty rear window wiper motor A short to ground in the wire T27 GRY Rear wiper in rise/return position or park position Measure the voltage to ground: There should be less than 1 V. Poor ground (G601) Faulty rear window wiper motor An open in the wire Rear wiper in any other position than rise/return position or park position Measure the voltage to ground: There should be more than 5 V. Faulty rear window wiper motor A short to ground in the wire S8 . S4 GRN/RED . BLK/WHT Rear window washer switch ON Measure the voltage between terminals S8 and S4: There should be less than 1 V. Faulty wiper/washer switch An open in the wire Rear window washer switch OFF Measure the voltage between terminals S8 and S4: There should be more than 5 V. Faulty wiper/washer switch A short to ground in the wire S9 . S4 WHT . BLK/WHT Rear window wiper switch ON Measure the voltage between terminals S9 and S4: There should be less than 1 V. Faulty wiper/washer switch An open in the wire Rear window wiper switch OFF Measure the voltage between terminals S9 and S4: There should be more than 5 V. Faulty wiper/washer switch A short to ground in the wire

Scheme 5

Scheme 6

Scheme 7

1. Remove the steering column covers (see «COLUMN COVER REMOVAL/INSTALLATION»(ref-333587-S09044343762009072100000) ).
2. Disconnect the dashboard wire harness 8P connector (A) from the wiper/washer switch (B).
3. Remove the two screws, then slide out the wiper/washer switch.
4. Inspect the connector 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. Check for continuity between the terminals in each switch position according to the table below. Windshield Rear Window
6. If the continuity is not as specified, replace the switch.
7. Install the switch in the reverse order of removal.

Scheme 8

1. Open the hood, and remove the wiper arms (see «WINDSHIELD WIPER MOTOR REPLACEMENT»(ref-333579-S10074193412009072100000) ). NOTE: Carefully remove the wiper arms so that they do not touch the hood.
2. Remove the cowl covers (see «COWL COVER REPLACEMENT»(ref-333593-S23280153962009072100000) ).
3. Disconnect the 5P connector (A) from the windshield wiper motor (B).
4. Test the motor by connecting battery power to the windshield wiper motor 5P connector terminal No. 3 and ground to terminal No. 2. The motor should run at low speed. If the motor does not run or fails to run smoothly, replace the motor (see «WINDSHIELD WIPER MOTOR REPLACEMENT»(ref-333579-S10074193412009072100000) ).
5. Test the motor by connecting battery power to the windshield wiper motor 5P connector terminal No. 5 and ground to terminal No. 2. The motor should run at high speed. If the motor does not run or fails to run smoothly, replace the motor (see «WINDSHIELD WIPER MOTOR REPLACEMENT»(ref-333579-S10074193412009072100000) ).
6. Connect an analog ohmmeter between the windshield wiper motor 5P connector terminals No. 2 and No. 4, and run the motor at low or high speed. The ohmmeter should indicate continuity and no continuity alternately. If it does not, replace the motor (see «WINDSHIELD WIPER MOTOR REPLACEMENT»(ref-333579-S10074193412009072100000) ).

Scheme 9

1. Open the tailgate, and remove the tailgate lower trim panel (see «TRIM REMOVAL/INSTALLATION - TAILGATE AREA»(ref-333585-S04198044782009072100000) ).
2. Disconnect the 5P connector (A) from the rear window wiper motor (B).
3. Test the motor by connecting battery power to terminal No. 4 and ground to terminal No. 5 of the wiper motor. The motor should run. If the motor does not run or fails to run smoothly, replace the motor (see «REAR WINDOW WIPER MOTOR REPLACEMENT»(ref-333579-S12652177232009072100000) ).
4. Connect an ohmmeter between terminals No. 1 and No. 3 and between terminals No. 2 and No. 3. There should be continuity when the wiper is in the park position.
5. Connect an ohmmeter between terminals No. 1 and No. 3. There should be no continuity when the wiper is in the rise/return position.
6. Connect an ohmmeter between terminals No. 2 and No. 3. There should be continuity when the wiper is in the rise/return position.

Scheme 10

1. Open the hood.
2. Disconnect the 2P connectors (A) from the washer motors (B).
3. Test the motor by connecting battery power to terminal No. 2 and ground terminal No. 1 of the washer motor. The motor should run. If the motor does not run or fails to run smoothly, replace it. 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 11

1. Remove the front bumper (see «FRONT BUMPER REMOVAL/INSTALLATION»(ref-333589-S35526460782009072100000) ).
2. Disconnect the 2P connector (A) from the washer fluid level switch.
3. Remove the washer fluid level switch from the washer reservoir. NOTE: Fluid may flow out of the opening.
4. Check for continuity between terminals No. 1 and No. 2 in each float position. 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 12

Scheme 13

Scheme 14

1. Open the hood. Remove the nuts (A) and the windshield wiper arms (B).
2. Remove the cowl covers (see «COWL COVER REPLACEMENT»(ref-333593-S23280153962009072100000) ).
3. Disconnect the 5P connector (A) from the wiper motor.
4. Remove the three bolts (B) and the wiper linkage assembly (C).
5. Separate the linkage (A) from the link (B).
6. Note the position (C), then remove the nut (D) and the link from the wiper motor (E).
7. Remove the three bolts, and separate the wiper motor from the linkage (F).

Scheme 15

1. Before installing the motor, connect the 5P connector to the wiper motor, and turn the wiper/washer switch ON to (LO) or (HI) position, then OFF to return the motor shaft to the park position. NOTE: Do not use the wiper/washer switch (INT) position in this step. If necessary, replace any damaged clips. Apply multipurpose grease to the moving parts.
2. Install the wiper motor to the wiper linkage assembly in the reverse order of removal.
3. Install the link to the wiper motor shaft, then align the mark (A) of the link and the mark (B) of the wiper linkage assembly.
4. After installation, adjust the wiper arms (see «WIPER ARM/NOZZLE ADJUSTMENT»(ref-333579-S35706571232009072100000) ).

Scheme 16

Scheme 17

1. Remove the mounting nut (A) and the wiper arm (B).
2. Open the tailgate, and remove the tailgate lower trim panel (see «TRIM REMOVAL/INSTALLATION - TAILGATE AREA»(ref-333585-S04198044782009072100000) ).
3. Disconnect the 5P connector (A) and remove the three mounting bolts (B), then remove the rear window wiper motor (C).
4. Install in the reverse order of removal.

Scheme 18

Scheme 19

1. Open the hood, and remove the front bumper (see «FRONT BUMPER REMOVAL/INSTALLATION»(ref-333589-S35526460782009072100000) ).
2. Disconnect the 2P connectors (A) from the washer motors (B) and the washer fluid level switch.
3. Disconnect the washer tubes.
4. Remove the two bolts and clip (A), then remove the washer reservoir.
5. Install in the reverse order of removal. Check the washer motor operation.

Scheme 20

Scheme 21

1. Lift the wiper arms from the windshield.
2. Press and hold the tab (A) and slide the wiper blade (B) toward the tab to release it from the wiper arm (C).
3. Slide the rubber (A) out from the wiper blade (B).
4. Install a new rubber to the wiper blade in the reverse order of removal.
5. Install the wiper blades onto the wiper arms in the reverse order of removal.
6. Check the wiper operation, if the blades slip, turn the wiper switch OFF, and reinstall the wiper blades securely.

Scheme 22

Scheme 23

1. Lift the wiper arm from the rear window.
2. Turn the rear wiper blade (A), release the lock, and then remove the wiper blade from the rear wiper arm (B).
3. Raise the old rubber (A), and remove it from the wiper blade (B).
4. Install the new rubber and the wiper blade in the reverse order of removal.

Note. After installation, confirm that the wiper arm works smoothly.

Scheme 24

1. Turn the ignition switch to ON (II), then turn the wiper switch ON, and then back OFF.
2. When the wiper arms stop at the park position, confirm that they are at the standard position. Position at about 2.6 in. (67 mm) from the top of cowl cover (A) Position at about 2.4 in. (62 mm) from the top of cowl cover (A)
3. When you turn on the washers, confirm 50% or more of the washer fluid lands within the spray area. If the spray area is not within the standard positions, adjust the nozzles. Position at about 4.2 in. (107.3 mm) from the top of the black ceramic area (B) at the lower windshield Position at about 4.2 in. (107.3 mm) from the top of the black ceramic area (B) at the lower windshield Position at about 9.7 in. (247 mm) from the windshield center line (C)

Scheme 25

1. Turn the ignition switch to ON (II), then turn the wiper switch ON, and then back OFF.
2. When the wiper arm stops at the park position, confirm that it is at the standard position. Wiper arm (A) fits into the lifter hook (B).
3. When you turn on the washer, confirm 50% or more of the washer fluid lands within the spray area. If the spray area is not within the standard positions, adjust the nozzles. Position at about 0.8 in. (20 mm) from the top of the black ceramic area (D) at the upper rear window. Position at about 1.1 in. (29 mm) from the top of the black ceramic area (D) at the upper rear window.

Scheme 26

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Scheme 29

1. Remove the washer nozzles and clips, then remove the washer tubes. With rear entertainment system Washer Tube Replacement (cont'd) With moonroof Without moonroof
2. Install the parts in the reverse order of removal. Take care not to pinch the washer tubes. Check the washer operation.