Rear Window Wiper Control Unit Input Test

Remove the right rear side trim panel (see TRIM REMOVAL/INSTALLATION - REAR SIDE AREA ).
Disconnect the 12P connector (A) from the rear window wiper control unit (B).

Fig 1: Disconnecting 12P Connector From Rear Window Wiper Control Unit
Courtesy of AMERICAN HONDA MOTOR CO., INC.
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.

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.

INPUT TEST (2 Of 3)

Cavity	Wire	Test condition	Test: Desired result	Possible cause if result is not obtained
6	BLK	Under all conditions	Check for voltage to ground:There should be less than 1 V.	Poor ground (G601, G701) An open in the wire
5	WHT/BLU	Under all conditions	Check for voltage to ground:There should be battery voltage.	Blown No. 3 (15 A) fuse in the under-hood fuse/relay box An open in the wire
12	RED/GRN	Ignition switch ON (II)	Check for voltage to ground:There should be battery voltage.	Blown No. 9 (7.5 A) fuse in the under-dash fuse/relay box An open in the wire
4	LT GRN/RED	Ignition switch ON (II) and rear window wiper switch ON	Check for voltage to ground:There should be battery voltage.	Blown No. 9 (7.5 A) fuse in the under-dash fuse/relay box Faulty wiper/washer switch An open in the wire
8	GRY/RED	Rear window wiper in park position	Check for voltage to ground: There should be less than 1 V.	Poor ground (G601, G701) Faulty rear window wiper motor An open in the wire
8	GRY/RED	Rear window wiper in stand by position	Check for voltage to ground: There should be less than 1 V.
9	GRY/BLU	Rear window wiper in park position	Check for voltage to ground:There should be less than 1 V.
9	GRY/BLU	Rear window wiper in stand by position	Check for voltage to ground:There should be 5 V or more.
10	GRN/WHT	Hatch glass open	Check for voltage to ground: There should be less than 1 V.	Poor ground (G601, G701) Faulty hatch glass latch switch An open in the wire
10	GRN/WHT	Hatch glass closed	Check for voltage to ground:There should be 5 V or more.	Short to ground Faulty hatch glass latch switch
11	BLK/YEL	Hatch glass opener switch pushed	Check for voltage to ground:There should be less than 1 V.	Poor ground (G501) Faulty hatch glass opener switch An open in the wire
11	BLK/YEL	Hatch glass opener switch released	Check for voltage to ground: There should be 5 V or more.	Short to ground Faulty hatch glass opener switch

Disconnect the connector, and make these input tests at the connector.

If all the input tests prove OK, the control unit must be faulty; replace the rear window wiper control unit.

INPUT TEST (3 Of 3)

Cavity	Wire	Test condition	Test: Desired result	Possible cause if result is not obtained
3	WHT/RED	Connect the No. 5 terminal to No. 3 terminal	Check rear window washer motor operation:The rear window washer motor should run.	Blown No. 3 (15 A) fuse in the under-hood fuse/relay box Poor ground (G301) Faulty rear window washer motor An open in the wire
1	LT GRN/BLK	Connect the No. 5 terminal to No. 2 terminal, and No. 1 terminal to No. 6 terminal	Check rear window wiper motor operation: The rear window wiper should run.	Blown No. 3 (15 A) fuse in the under-hood fuse/relay box Poor ground (G601, G701) Faulty rear window wiper motor An open in the wire
2	GRN/RED
7	BLK/YEL	Rear window wiper in park position, connect the No. 5 terminal to No. 7 terminal	Check hatch glass opener actuator operation: The hatch glass should open.	Poor ground (G601, G701) Faulty hatch glass opener actuator An open in the wire