Power Window Control Unit Input Test

Remove the driver's door panel (see FRONT DOOR PANEL REMOVAL/INSTALLATION ), but leave the driver's door subharness connector connected to the driver's door wire harness.
Disconnect the 18P connector (A) from the power window control unit (B).

Fig 1: Disconnecting 18P Connector (A) From Power Window Control Unit (B)
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 to the control unit, 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.

INPUT TEST REFERENCE (CONTROL UNIT (B))

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 (G601) An open in the wire
8	GRN	Under all conditions	Check for voltage to ground on terminal No. 7: There should be battery voltage.	Blown No. 1 (20 A) fuse in the driver's under-dash fuse/relay box An open in the wire
7	WHT/YEL	Ignition switch ON (II) and passenger's multiplex terminal A12 connected to battery voltage	Check for voltage to ground: There should be battery voltage.	Blown No. 7 (20 A) fuse in the passenger's under-dash fuse/relay box Faulty power window relay An open in the wire
A12'2	Fuse/relay box socket
13	BLK/WHT	Ignition switch ON (II) and driver's window switch UP	Check for voltage to ground: There should be battery voltage.	Faulty power window master switch An open in the wire
11	YEL/GRN	Ignition switch ON (II) and driver's window switch AUTO UP
11	YEL/GRN	Ignition switch ON (II) and driver's window switch AUTO DOWN
15	RED/GRN	Ignition switch ON (II) and driver's window switch DOWN
17	WHT	Ignition switch ON (II)	Check for voltage between the No. 17 (+) and No. 9 (-) terminals: There should be battery voltage.	Faulty power window motor Faulty pulser An open in the wire Faulty power window control unit
9	BLK	Ignition switch ON (II)
5	YEL	While operating the driver's window switch	Check for voltage between the No. 5 (+) and No. 9 (-) terminals: There should be pulse voltage 0-5 V (an analog voltmeter needle should move back and forth alternately; a digital voltmeter should show the average voltage of about 2.5 V).
16	BLU	While operating the driver's window switch	Check for voltage between the No. 16 (+) and No. 9 (-)terminals: There should be pulse voltage 0-5 V (an analog voltmeter needle should move back and forth alternately; a digital voltmeter should show the average voltage of about 2.5 V).
17	WHT	Ignition switch ON (II)	Check for voltage between terminal No. 17 and body ground: There should be battery voltage.	Faulty power window control unit Short to ground Faulty power window motor

*1: Make sure the driver's door subharness is connected

*2: Passenger's multiplex control unit connector

Disconnect the 18P connector from the power window control unit, then 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.

RESULT REFERENCE CHART (POWER WINDOW CONTROL UNIT)

Cavity	Wire	Test condition	Test: Desired result	Possible cause if result is not obtained
4	BLU/GRN	Driver's window switch DOWN	Check for continuity to ground: There should be continuity.	Poor ground (G401, G601) Faulty power window master switch An open in the wire
4	BLU/GRN	Driver's window switch OFF	Check for continuity between the No. 4 and No. 14 terminals: There should be continuity.	Faulty power window master switch An open in the wire
14	BLU/ORN	Driver's window switch OFF		Faulty power window master switch An open in the wire
3	RED/BLU	Connect the battery power to the No. 12(+) and ground the No. 3 (-) terminals	Check for driver's window motor operation: It should run (the window moves down).	Faulty power window motor An open in the wire
12	RED/YEL	Connect the battery power to the No. 3 (+) and ground the No. 12 (-) terminals	Check for driver's window motor operation: It should run (the window moves up).	Faulty power window motor An open in the wire