Moonroof Motor-Control Unit Input Test

NOTE:

Make sure the fuses associated with the system is OK.
If the moonroof works OK manually, but will not work in AUTO, or reverses frequently (obstacle detection), reset the moonroof motor-control unit before proceeding with the input test.

1. Turn the vehicle to the OFF (LOCK) mode.

2. Disconnect the moonroof motor-control unit 14P connector.

Moonroof Motor-Control Unit 14P Connector (female terminals)

Courtesy of HONDA, U.S.A., 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 are OK, go to step 4.

With the connectors still disconnected, do 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 5.

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
12	RED	Disconnect these connectors: Power window master switch 37P connector Front passenger's power window switch 37P connector	Check for continuity between terminal No. 12 and power window master switch 37P connector terminal No. 36:There should be continuity	An open in the LIN(P/W) wire
			Check for continuity between terminal No. 12 and front passenger's power window switch 37P connector terminal No. 34:There should be continuity.	An open in the LIN(P/W) wire
			Check for continuity to ground: There should be no continuity.	A short to ground in the LIN (P/W) wire

Reconnect the connector, and do 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, replace the moonroof motor-control unit .

Cavity	Wire	Test condition	Test: Desired result	Possible cause if desired result is not obtained
1	GRN	Under all conditions	Measure the voltage to ground: There should be battery voltage.	An open or high resistance in the wire
4	BLK	In all power modes	Measure the voltage to ground: There should be less than 0.2 V.	Poor ground (G401) An open or high resistance in the ground wire
9	GRY	Vehicle ON mode, moonroof switch in CLOSE position	Measure the voltage to ground: There should be less than 0.2 V.	Faulty moonroof switch Poor ground (G401) or an open in the ground wire An open or high resistance in the wire
9	GRY	Vehicle ON mode, moonroof switch released	Measure the voltage to ground: There should be battery voltage.	Faulty moonroof switch A short to ground in the wire
8	LT GRN	Vehicle ON mode, moonroof switch in TILT position	Measure the voltage to ground: There should be less than 0.2 V.	Faulty moonroof switch Poor ground (G401) or an open in the ground wire An open or high resistance in the wire
8	LT GRN	Vehicle ON mode, moonroof switch released	Measure the voltage to ground: There should be battery voltage.	Faulty moonroof switch A short to ground in the wire
7	BLU	Vehicle ON mode, moonroof switch in OPEN position	Measure the voltage to ground: There should be less than 0.2 V.	Faulty moonroof switch Poor ground (G401) or an open in the ground wire An open or high resistance in the wire
7	BLU	Vehicle ON mode, moonroof switch released	Measure the voltage to ground: There should be battery voltage.	Faulty moonroof switch A short to ground in the wire
14	PUR	Vehicle ON mode, moonroof switch in AUTO (OPEN) or AUTO (CLOSE) position	Measure the voltage to ground: There should be less than 0.2 V.	Faulty moonroof switch Poor ground (G401) or an open in the ground wire An open or high resistance in the wire
14	PUR	Vehicle ON mode, moonroof switch released	Measure the voltage to ground: There should be battery voltage.	Faulty moonroof switch A short to ground in the wire